New Construction / International /

V6

Information correct as of 3rdAugust 2026. Please see kb.breeam.com for the latest compliance information.

Acceptable deviations – ISO 7730:2005 category B - KBCN1714

Acceptable deviations from category II thermal modelling criteria can be made in accordance with CEN 16798-2:2019 Anne E, only when the thermal comfort assessment uses CEN 16798 to demonstrate compliance. Where this is the case, up to a 6% deviation based on yearly occupied hours can be accepted when demonstrating compliance.  Note: this KBCN no longer allows the deviations to be used for ISO 7730:2005. However, for assessments where the assessor has advised the project team based on the original KBCN, prior to this update, this will be honoured if you provide evidence of this in your assessment. KBCN wording 16 Jan 2025 - 10 Jul 2025: ~ Acceptable deviations from the ISO 7730:2005 category B criteria thermal modelling criteria can be made in accordance with CEN 16798-2:2019 Annex E. Up to a 6 % deviation based on yearly occupied hours can be accepted when demonstrating compliance ~ 
10 Jul 2025 - KBCN updated following further review of relevant standards

Accreditation – sampling and testing laboratories - KBCN1337

Analysis / testing laboratory NC 2016 or newer: Where an organisation used for the analysis of indoor air or emissions from building products is not accredited to ISO/IEC 17025, the organisation must be accredited, either by a national accreditation body, or by a member of any one of the following accreditation groups: European Cooperation for Accreditation International Accreditation Forum International Laboratory Accreditation Cooperation The accreditation must specifically cover the analysis of indoor air or emissions from building products. Other schemes: Accreditation to ISO/IEC 17025 is not required in the criteria. However, this KBCN has been applied to encourage a consistent approach towards accreditation. Accreditation by a national or internationally recognised organisation helps to ensure rigorous, consistent and reliable testing results. Sampling organisation If another organisation carries out sampling on behalf of the analysis / testing laboratory, this organisation does not need to be accredited to the above. However, they must provide a brief report justifying: This report is provided to the BREEAM assessor and submitted as supporting evidence for this issue. 
31-Oct-2022 Wording clarified. Scheme applicability updated.
10-Oct-2022 Title amended for clarity. Scheme applicability updated.
24-May-2022 Updated to differentiate between sampling and analysis requirements. 
07-May-2021 Added clarification regarding alternative qualifications. 
10-May-2021 Updated scheme applicability.

Adaptability for a projected climate change scenario – Winter conditions - KBCN1715

Where future climate change scenario projections in winter indicates a higher temperature and, therefore, more thermally comfortable climate compared to the current winter temperatures, it can be assumed that the winter conditions within the climate change scenario are met based on the thermal modelling of current winter conditions. Justification must be provided for each project confirming that the future winter conditions will be met with the current heating system. In a warming climate the heating system needs to be sized for the beginning of its lifespan, whereas the cooling systems need to be sized for the end of their life span (Ref: CIBSE TM55: 2014)

Aftercare – speculative developments - KBCN0101

For speculative projects (i.e. where the end occupiers are unknown), the Aftercare issue will be filtered out. Any relevant minimum standard will not be applicable in such cases. Where the end-user is unknown it is not possible to demonstrate compliance with the Aftercare issue requirements.  

Air-conditioned spaces - KBCN00035

Air-conditioned spaces are assessed to ensure appropriate thermal comfort levels are achieved. Cooling capacity should be sufficient to comply with the requirements of CIBSE Guide A, however providing sufficient space to install additional capacity to meet the requirements at a later date in line with projected climate change scenarios is also acceptable. In addition, if it can be demonstrated that the air-conditioning system can achieve the thermal comfort criteria in accordance with CIBSE Guide A, Table 1.5, thermal modelling does not need to be carried out. The “time out of range” (TOR) metric should be reported as 0%.  

Aircraft safety – developments in the proximity of airports - KBCN0912

Where it can be demonstrated that an assessed development, within or adjacent to an airport or similar, must restrict the ecological value of the site for reasons of aircraft safety (mitigating the risk of bird-strikes to meet local or national regulations), the approach for some issues in the Land Use and Ecology category can be adjusted. If in these circumstances, the client wishes to enhance ecological value on an external site, outside of the main development site, this can be considered in the following way for each issue: Site selection: The development site only must be assessed. Ecological value of site and protection of ecological features: The development site only must be assessed, but the recommendations may be tailored to suit the requirements of the relevant legislation. Enhancing site ecology: The development site and the external site must be included in the SQE’s report and recommendations, albeit that, for the development site, the approach may to be to restrict biodiversity. Enhancements implemented in-line with the recommendations of the SQE are likely to apply to the external site. Long term impact on biodiversity: Both sites must be considered in the SQE’s report to meet the prerequisite/first credit as applicable, albeit that, for the development site, the approach may to be to restrict biodiversity. Further credits in relation to improving and maintaining the site’s long-term biodiversity can be awarded on the basis of adopting these for the external site only, in line with the guidance.

Amenities – Pharmacy within a hospital or health centre - KBCN0321

To meet the requirements of 'Over the counter services associated with a pharmacy', a dispensary within a health centre or hospital can be considered as meeting the intent, provided it is publicly accessible and also offers the type of over-the-counter services associated with a stand-alone pharmacy, such as non-prescription medication and health products. Note: This is a change to the approach outlined in the previous KBCN wording, therefore, for assessments registered before this update, where it can be demonstrated that the the assessor has advised the project team based on the previous wording, this can be accepted: Superseded guidance: A publicly accessible pharmacy would typically be required in order to constitute a suitable amenity. If it can be confirmed that an internal pharmacy (in Northern Ireland this may also include an onsite controlled medical dispensary) will provide prescribed medicines for building users, this is acceptable. 
18 June 2025 - Title updated and wording amended to clarify the intent. Applied to NC V6 standards.

Applicability – industrial operational areas - KBCN1342

The aim of this issue is to encourage a healthy internal environment.  For the operational areas of industrial buildings, the internal environment is dictated by health and safety requirements.  This means that the BREEAM requirements should not be made applicable to them, and so the operational areas can be ignored in the assessment of Hea 02. 
10-Oct-2022 - Title amended to align with standard KBCN naming format for clarity and consistency. Made applicable to UK and International NC V6.

Applicability – retail asset with no office areas - KBCN0531

The compliance note regarding industrial and retail areas incorrectly suggests that the minimising sources of air pollution credits are not applicable to retail areas with no associated offices. These credits do apply to retail sales areas, although they are excluded for operational areas in industrial buildings. The 'potential for natural ventilation' credit is not applicable for retail sales areas, as it applies only to office areas. Therefore, where a retail building does not contain any office, this credit is not applicable. While the requirements apply to permanently or semi-permanently occupied offices, small admin areas, which are only used occasionally can be excluded. This also applies to shell only and shell and core new build projects, where it can be demonstrated that no office spaces will be provided as part of the fit-out. The online tool will award the credit by default in both issue 1.0 of the INC 2016 scheme and up to issue 1.4 of the IRFO 2015 scheme. When assessing against INC 2016 2.0 and V6, the online tool will instead filter this credit out. 
22-Oct-2022 Title amended to align with standard KBCN naming format for clarity and consistency. Made applicable to International NC V6.
11-Sep-2018 Clarification added in relation to spaces that are used occasionally, and shell only/shell and core new build projects. 
15-Sep-2017 Clarification added on the procedure for making the 'potential for natural ventilation' credit N/A on the online tool. Technical manual to be updated accordingly in next re-issue.

Applying internal partition sound insulation criteria to internal doors - KBCN0665

Where sound insulation criteria apply to internal partitions the calculations do need to include any doors which are part of the wall in question. While sound insulation performance of a typical door will be lower than for a typical wall, with careful design, specification and detailing, this can be overcome. 

Appropriate project stage to appoint a suitably qualified acoustician - KBCN0256

BREEAM requires that a suitably qualified acoustician is appointed at an appropriate stage of the project, so as to ensure that early design advice on criteria of pre-requisition is met. The aim is to ensure that costly amendments to building designs are not made as a result of late appointment of the acoustician. Ultimately, it is for the assessor to determine at what stage of the project is deemed to be appropriate for this appointment to have taken place given the project specific circumstances and procurement type.  

Approved Equivalent Roles List (AERL) - KBCN1809

BREEAM International standards are unique because of their flexibility. For International projects, Assessors can submit roles to substitute those described in the Technical Manuals. Provided that such roles are equivalent to the BREEAM specified roles, BRE Global will approve them for use in a particular country or region. The Approved Equivalent Roles List is a record of all roles that BRE Global has approved to date. The list is periodically updated to reflect recent approvals or withdrawals. Using existing approved roles Where you are using an approved role, and not the role described in the criteria in the scheme Technical Manuals, a copy of the AERL should be included as part of your evidence submission for QA. AERL versions The version of the AERL that is current at the time of registration is the one that is used for assessment. Newer versions released after this can also be used, however older versions before the registration date cannot be used. For example: if the version current at registration was v3.0, then v3.0 (or any later versions) can be used, but v2.0 (or any earlier versions) cannot be used. Proposing new roles New roles cannot be proposed if they are not of equal competency to the BREEAM requirements. Only roles which are equivalent or more rigorous than the BREEAM default roles are considered. If you wish to propose a new role which you think is equivalent in your country or region:
  1. Check what the role needs to cover by referring to the roles described in the scheme Technical Manual definition.
  2. Complete BF2599 BREEAM Approved Equivalent Roles Application Form and send this to our Technical Team via the Query Webform, adding AERL into the subject field.
The information provided to us within this form must include: We will need a few weeks to review the information (please check with us for time scales). If there is missing information, or the information is not clearly referenced, this might take longer. If successful, we will send you a revised copy of the AERL which includes the new role, and will update this for future versions of the AERL.

Approved Standards and Weightings (ASWL) – Applicability to BREEAM INC V6 - KBCN1489

The International New Construction 2016 country weightings in the Approved Standards and Weightings List (ASWL) are applicable to International New Construction V6. This includes: The latest version of the ASWL template must be used for newly registered assessments (see KBCN0910). 
23 Mar 2022 - Updated to include additional information and align title with other content

Areas in the public domain - KBCN0587

Where areas within the site boundary will be public domain after construction, and the design/specification has been determined by the local authority/statutory body/planning permission etc, they can be excluded from the assessment of the 'Safe Access' criteria. Evidence would be required to demonstrate that this was the case. Where the client/design team do not have control of the design of these areas, the development should not be prevented from achieving the credit.

Assessing furniture - KBCN00019

Fixed furniture within the building should be assessed. Examples of this include: built-in desks, kitchen units, toilet cubicles, any use which constitutes a significant fitting. Movable furniture which is not fixed to the building should be excluded from the assessment. 
29 Aug 2025 - Applicability to INC 2016 and INC V6 confirmed

Assessing industrial spaces – exemptions - KBCN0734

The thermal comfort criteria do not apply to the operational or storage areas typically found in industrial assets or other similar asset types. The criteria is still be applied to the other parts of the asset as appropriate. Operational and storage areas often have function-related thermal requirements determined by operational or storage needs. These functional requirements override the needs of any occupants. 
17-Jan-2024 - Scheme applicability updated.

Assessing thermal comfort – Residential buildings - KBCN1408

CIBSE TM59 can be used to demonstrate compliance with the thermal comfort requirements for residential buildings, instead of ISO 7730:2005. This is to recognise the most up to date methodology relating to the assessment of homes. 
26 Jan 2025 - Updated to apply to multi-residential buildings (long-term stay) and scheme applicability extended to account for this.

Assessment tools – Applicability to BREEAM INC V6 - KBCN1503

The following offline (Excel) spread-sheet tools for BREEAM International New Construction 2016 remain applicable for assessments using BREEAM INC V6: The referencing of these tools will be updated shortly, to confirm this.

Asset classification – co-living developments - KBCN1568

This guidance is intended as a general reference only. Each co-living development will include a different combination of residential accommodation and managed communal spaces. Assessors must apply professional judgement to determine the most appropriate asset classification. Typical characteristics of co-living developments Developments within these sectors typically include the following characteristics: Classification guidance The following classifications are recommended:
Assessment Type Recommended Classification
International New Construction, International Refurbishment and Fit-Out and Refurbishment and Fit Out Commercial V7 Residential institutions- long term Stay*
BREEAM USA In Use (BIU) Residential
*Assessors should also consider how the asset is classified under relevant local building regulations to support the interpretation of Residential Institution. 
16 July 2026 - Applicability clarified and wording updated
17-June-2026 - Guidance revised and updated for clarity

ASWL: Approved Standards and Weightings List - KBCN0423

BREEAM International schemes are unique because of their flexibility. The Approved Standards and Weightings List is a record of all local codes and standards that BRE Global has approved to date. The list is periodically updated to reflect recent approvals or withdrawals. If stated in the manual, local best practice codes and standards can be submitted to BRE Global to substitute the standards described in the criteria in the scheme Technical Manuals. Provided that such standards are equivalent to the BREEAM specified standards, BRE Global will approve them for use in a particular country or region. Using existing approved standards A copy of the ASWL being used should be included in every evidence submission for QA. If the ASWL is being used without proposing any new standards, the ASWL can be submitted to QA at the same time as the rest of the evidence. It is important to notify QA of which standard (international or local) you are using for each issue. Default standards Where no appropriate local standard exists, international, European or UK standards can be used by default. UK standards can be found in the UK country tab. No technical query or permission is required. ASWL versions The version of the ASWL that is current at the time of registration is the one that is used for assessment. Newer versions released after this can also be used, however older versions before the registration date cannot be used. For example: if the version current at registration was v33.0, then v34.0 (or any later versions) can be used, but v32.0 (or any earlier versions) cannot be used. Standard versions Where a standard has been updated, it is not automatically added to the ASWL template as the scope of the standard may have changed. Please provide a copy of the relevant parts of the standard translated into English indicating where in the standard the requirements in the ASWL are met. Alternatively, if you have evidence demonstrating the scope of the standard has not changed, this is acceptable too for approval. Proposing new standards New standards cannot be proposed if they are easier to achieve than the BREEAM requirements. Only standards which are equivalent or more rigorous than the BREEAM default standards are considered. If you wish to propose a new standard which you think is more relevant to the assessment, or if an existing local standard has been replaced:
  1. Check what the proposed standard needs to cover by referring to your country tab
  2. Input the names of proposed standard(s) in the relevant column of your country tab. More than one standard can be proposed, if together, they cover our requirements.
  3. Identify the relevant clauses in the standards that show how these standards meet our requirements, and make sure these are clearly marked so they are easy for us to check. If the standard is not in English, translations of the relevant clauses must be provided.
  4. Send the standards and all of the supporting information to us via the ‘Assessor Queries’ section on BREEAM Projects for our review. We will need a few weeks to review the information (please check with us for time scales). If there is missing information, or the information is not clearly marked, we might take longer.
If successful, we will send you a revised copy of the ASWL which includes the new standard, and will update this for future versions of the ASWL. 
18-Aug-2025 - Guidance under headings, 'Standard versions' and 'Proposing new standards' updated. Applied to INC V6.
05-Aug-2020 - Broken link to video removed and replaced with explanatory text
05-Jul-2017 - Link to video guidance added

Bamboo, cork and other non-timber forest products – Responsible sourcing - KBCN1768

Non-timber forest products, such as bamboo and cork should be responsibly sourced to minimise the environmental impacts and protect local ecosystems. However, as they are not timber or timber-based products, these fall outside the scope of the Prerequisite. Where such products are integrated into a building, they should, nonetheless, be assessed and included in the calculator under ‘Other materials’.

BREEAM AP – Achieving the design credit at the Post Construction Assessment - KBCN0215

Where a project will be undertaking a post construction stage assessment only (no interim assessment), to demonstrate that the criteria were met at the design stage a "BREEAM credit monitoring report" should be provided when the assessment is submitted, which shows that at the design stage of the project the building was still on target for the proposed BREEAM rating. This could be an excel document showing the issues that the design is on target for achieving with a short summary of how the BREEAM AP is steering the project for the correct rating. As long as the criteria are met and the correct information can be gathered for your evidence, a design stage certification is not required.

BREEAM AP – Change of BREEAM APs/Sustainability champions during project - KBCN0295

Whilst it would generally be preferable to retain the same individual in the role of BREEAM AP/Sustainability champion throughout the design and construction of a particular project for the purposes of continuity, we appreciate that this may not always be feasible. It is therefore entirely appropriate that the three credits available for using BREEAM APs/Sustainability champions can still be awarded where the individual performing the role changes (provided the ongoing involvement of an AP/SC is maintained in accordance with the criteria).  

BREEAM AP/Sustainability Champion appointment timing - KBCN0738

It is acceptable for the BREEAM AP/Sustainability Champion to be appointed later than the required stage, if it can be demonstrated that the AP/Sustainability Champion was appointed at the earliest appropriate time in the project and that the late involvement will not have a detrimental effect on the setting of BREEAM performance targets that need to be formally agreed no later than the concept design stage.

BREEAM Daylighting – Alternative methods - KBCN1821

Within the BREEAM daylight criteria, there are two detailed calculation options of either using the average daylight factor method or average and minimum daylight illuminance method. The use of the standards within the table below, can now be used as approved alternative calculation methods. The performance requirement must be met in line with either the standard or exemplary criteria as set out in the table below: To use either the EN 17037 or IES-LM-83-23 option, the methodology within Guidance Note 50 must be followed. In addition, the minimum percentage area to comply, dependant on the building type and space type, must be met in accordance with the criteria within the relevant BREEAM issue. To calculate the percentage of assessed area that complies, follow KBCN0471 or KBCN1081. Example: A school using the International New Construction V6 scheme, has used the IES-LM-83-23 sDA method to calculate the daylight performance. The nominal level is achieved in all occupied spaces. The minimum area to comply is set at 80% as per table 10 and 12. As 100% of occupied spaces meet the nominal level, 2 credits can be met.

Capital cost reporting and LCC measured area - KBCN0438

When assessing the Capital cost reporting and the LCC credits, the area to be considered should be the Gross Internal Floor Area (GIFA), according to the below RICS definition: Gross Internal Floor Area Gross Internal Floor Area is the area of a building measured to the internal face of the perimeter walls at each floor level, which includes: And excludes: 
14.02.18 - KBCN content amended to extend the applicability to LCC and to refer to GIFA rather than GEA, to reflect current industry practice.

Car sharing – aim and principles - KBCN1510

Aim The aim of this measure is that the asset’s management establishes, promotes and administers a process which encourages building users to share private car journeys to and from work, reducing the number of cars used for this purpose. Principles A car sharing group will, generally: A car sharing group is not: The criteria do not prescribe what terms and conditions should be implemented and, whilst the above principles should generally be followed, specific arrangements may vary. Evidence and justification must always be provided to demonstrate that the above aim is met. 
21-Jul-2026 - Scheme applicability updated. Title updated for clarity and consistency.

Car sharing – location of priority parking - KBCN0796

Priority spaces for car sharers need to be located in the nearest available parking area to the main building entrance or to an entrance regularly used by the car sharers. For refurbishment projects, this applies regardless of whether external works or changes to car parking areas are within the scope of works. Assigning and clearly marking out the location of priority parking spaces is a measure that can be taken by any project regardless of scope, provided there are suitable external parking areas. 
21-Jul-2026 - Scheme applicability updated. Wording expanded to clarify how KBCN applies to refurbishment projects. Title updated for consistency.
22-Sep-2022 - Applied to UK NC 2018.

Car sharing – speculative projects - KBCN0878

Setting up a car sharing group requires two parties: On this basis this measure will generally be unavailable to speculative projects, however: Green fit-out agreement If there is evidence of a legally binding agreement for a future tenant to set up a scheme, this can also be considered as meeting the intent of this transport measure. 
22-Jul-2026 - Scheme applicability updated. Title updated for clarity. New text added on green fit out agreements.

Car sharing – calculation of priority spaces - KBCN0282

The calculation of priority spaces for car sharers should account only for the car parking capacity that is dedicated to the staff working in the building, without considering spaces for customers or visitors. Car sharing spaces should be clearly segregated from customer / visitor parking areas. 
21-Jul-2026 - Scheme applicability updated.
06-Sep-2023 - Title updated to align with naming protocol.
23-Mar-2017 - Note added clarifying requirement for segregation.

Certificate validity – EMS - KBCN1401

The requirement for the principal contractor to operate an EMS relates to the duration of operations on site. Therefore, certification against ISO 14001/EMAS must be valid as above and cannot be expired, pending or applied retrospectively.

Change in main contractor - KBCN0645

In situations where the main contractor changes mid-project, for example where the original contractor goes into administration and is replaced by another main contractor, it is acceptable for the post-construction credits to be awarded based on the new contractor providing information on their activities. This is providing the project is yet to start on site. This is in effect assessing the issue using the Post Construction Assessment route instead of a Post Construction Review. However, if the project has already started on site and information about the site activities of the previous contractor is not available it would not be appropriate to award the credit solely based on the new contractor activities.

Combined sub-metering – electric space / water heating and small power - KBCN00068

For bedrooms and associated spaces in: It is acceptable for an electric space or water heating system to be combined with lighting and small power, provided that sub-metering is provided for each floor plate or other appropriate sub-division. For these asset types, sub-metering electric heating in multiple bedrooms may be costly and technically challenging. Where occupants have individual control but are not responsible for paying the utility bills, the building manager may have little influence on their energy consumption. Therefore, sub-metering electric heating would provide little or no benefit in meeting the aim of the issue. 
06-Mar-2024 - Scheme applicability extended to V6. 
15-Dec-2023 - Title updated to clarify that this approach can be applied to both space heating and domestic hot water heating, where appropriate.

Commissioning – evidence - KBCN1099

Where the criteria require that seasonal commissioning activities are to be completed over a minimum 12 month period following the occupation of the building, it is accepted that completed records may not be available at the time of Final Certification. In such cases, evidence of the appointment of a seasonal commissioning manager and schedule of commissioning responsibilities which fulfils the BREEAM criteria are acceptable to demonstrate compliance.

Commissioning – Monitor and specialist commissioning manager - KBCN00051

The commissioning monitor is typically a project team member who will monitor the systems commissioning and testing programme for the building. The individual may combine that role with that of the specialist commissioning manager to deal with complex systems if they have the necessary knowledge. However, if the building has several specialist systems it is unlikely that the same person would be able to carry out all of the commissioning and more than one specialist would most likely be required.

Commissioning – Role of the specialist commissioning manager - KBCN0604

The specialist commissioning manager for a complex system will generally be be a specialist contractor. They must provide independent design review, oversee the commissioning and independently verify the work carried out by the installer, in line with the criteria. It may be possible for the specialist commissioning manager to be part of the principal contractor's organisation, provided it is demonstrated that they are independent of the design and installation and that any potential conflict of interest has been managed. 
22 Nov 2021 - Wording updated to clarify the intent.

Communal waste storage – Requirement for this to be external in Criterion 1 - KBCN1513

Communal waste storage areas can be located within the building. However, where such waste is stored internally, it must be in a location that demonstrably provides suitable environmental conditions, meets relevant fire, health and safety requirements for waste storage and has appropriate external access for waste collection.

Compactor/baler/organic waste storage requirements – Speculative/Shell only/Shell and core - KBCN1662

For Shell only/Shell and core assessments and speculative developments, where the scope of works does not include the installation of such facilities but the building function suggests that they will be required, appropriately sized space, services and infrastructure for the relevant facilities must be provided. The facilities themselves do not necessarily need to be provided or installed to demonstrate compliance. 
First published for BREEAM USA 1st October 2024

Considerate construction – corporate registration - KBCN0905

Where credits are awarded for the assessment of the site against a compliant scheme, corporate registration, which assesses the contractor's overall operations and performance across multiple sites, is not in itself recognised. To award considerate construction credits, BREEAM requires the assessment of the specific assessed development, in line with the criteria.

Considerate construction: Checklist A1 – Photo card identification - KBCN1632

Checklist A1 Reference 4.e. requires the following: 'Operatives’ identification; all operatives to be provided with a photo identification clip card' However, since this was introduced into 'considerate construction' requirements, data protection legislation and expectations around privacy have progressed. This requirement can, therefore, be disregarded.

Considerate constructors exemplary criteria - KBCN0843

Where the exemplary criterion has been met, the exemplary credit will be awarded in addition to the two standard credits for considerate construction. There is no need for the assessor to demonstrate compliance with the standard credits in this case, just the exemplary one.  

Contaminated Land- Presence of radon gas - KBCN0155

Naturally occurring radon is not considered as contamination in relation to BREEAM. However, where radioactive substances have been introduced as a consequence of human activities, that land would then be considered to be ‘contaminated with radioactivity’ and remediation of such contamination would fall under the scope of the relevant BREEAM issue.

Contractual agreements for Shell Only / Shell & Core assessments - KBCN0942

For: All relevant criteria are applicable. Contractual agreements confirming future provision of spaces are not acceptable. Either: While the location of the space(s) may change when fitting out, at this stage a space that is conveniently located for the deposit and collection of operational waste must be provided. 
30-Mar-2026 - Added text to align with KBCN0696. Scheme applicability updated.
16-Apr-2018 - Scheme applicability updated.
24-Apr-2017 - Published.

Cyclist safe access - KBCN0188

Safe access for cyclists must be via a compliant cycle lane, unless it is demonstrated that it would be impractical to cycle for a short distance between the site entrance and cycle storage. For example, where a gate, door or barrier forces the cyclist to dismount and walk for a short distance to access the cycle storage and it would be impractical for cyclists to re-mount. Where it is not practical to provide compliant cycle lane from the entrance to the cycle storage, the safety of cyclists and pedestrians must be maintained. 
21/02/2020 Re-worded to clarify the intent
 

Cyclists’ facilities – Shell only/shell & core assessments - KBCN0882

Cycle parking must be provided as part of the base-build for all assessment types. Where compliance is sought for additional cyclists’ facilities, the developer should provide all aspects of the installation which fall within the scope of their work and facilitate the future completion of any aspects which do not. For shell & core assessments, if additional facilities, such as showers and drying space, are not provided in core areas and internal walls are not provided to tenanted areas, these must be indicated on design drawings and all relevant services provided. This would include capped-off supplies and electrical points as necessary in order to facilitate the completion of the compliant facilities by the tenant. Where internal walls are within scope, a compliant changing area must be provided, however for lockers, compliance can be achieved by providing a design drawing showing that there is an adequately sized and suitably located space for the required number of compliant lockers. The developer should do as much as they can, within the scope of their work, to facilitate the future installation of compliant facilities and should not do anything which would make future installation more onerous. 
01 Oct 2024 - Addition paragraph added to clarify the approach for changing areas and lockers. 
25 May 2018 - Wording amended to clarify the intent.

Dedicated cycle paths in the absence of cycle facilities - KBCN00039

Safe cycle access needs to be provided even if there are no dedicated cycle facilities. The dedicated cycle paths will generally need to be provided to the main entrance(s) of the building along routes likely to be used by cyclists through the site.  The design team are required to determine what is required to satisfy the intent of the criteria. Cycle access and cyclists' facilities are assessed independently of each other. Building users may cycle even if the building does not have cycle storage facilities and so safe and secure access to and from the building must be provided.

Dedicated transport service - KBCN1823

A dedicated transport service, such as a dedicated bus, coach, or minibus, provided or managed by the building owner or management, can be considered for any building type with a fixed usage pattern. The dedicated transport must provide a transfer to the local population centre or public transport interchange, or it may be a door-to-door service. Generally, a dedicated service must be available to all regular building users. However, for primary and secondary schools, a dedicated service available to students only can be considered compliant

Dedicated transport service - KBCN1823

A dedicated transport service, such as a dedicated bus, coach, or minibus, provided or managed by the building owner or management, can be considered for any building type with a fixed usage pattern. The dedicated transport must provide a transfer to the local population centre or public transport interchange, or it may be a door-to-door service. Generally, a dedicated service must be available to all regular building users. However, for primary and secondary schools, a dedicated service available to students only can be considered compliant

Definition – Critical value - KBCN1006

Critical value aims to maximise whole life value of the building based on client requirements, and differs from minimising life cycle cost. This is a more specific analysis of how the building's ongoing maintenance and operation can impact business needs. For instance:  

Definition – Project value - KBCN0552

The term ‘project value’ represents the total project cost, which includes all costs such as construction, design, land acquisition etc.

Definition of concourse - KBCN0386

A concourse is an open area within or in front of a public building which is used primarily for circulation, short term waiting, or incidental interaction, analogous to the concourse of a train station. It should not be considered occupied space.  

Definition: cafe, canteen, catering kitchen, restaurants, bars - KBCN0691

For the purposes of the Acoustic Performance credit: Informal cafés or canteen areas, catering kitchens are generally services provided by an organisation such as a college, factory, or company for it's students or staff. Restaurants are places where food are served to the public on the premises. Compared to the examples above, restaurants can be independent and not ancillary, as per the BREEAM definition and scope. Bars are establishment where soft drink/alcohol and sometimes other refreshments are served. They might be on their own or ancillary to other functions, e.g. hotels.

Design team meetings via conference call - KBCN0201

Design team meetings can be conducted via conference calls.

Conference calls may provide a more convenient and sustainable way to conduct meetings. 

District cooling – Used in combination with local cooling - KBCN1634

Where district cooling can be considered outside the scope of the assessment, either in accordance with the Methodology section of the technical manual or in line with KBCN0759, compliance must be based on calculating the DELC for all systems. However, where the district cooling system is exempt from assessment, as described above, this should be based on a GWP of zero for the district cooling system.

Electric vehicle charging stations – Short-term visitor spaces - KBCN1735

Where it can be demonstrated that parking spaces for visitors will only be used for short-term parking (a maximum of 15 minutes), these spaces can be excluded from the calculation for EV spaces. This exclusion will typically apply to certain types of retail outlet, where visitors are, for example, collecting or dropping off orders. However, other situations can be considered, where justified.

Elemental LCC and options appraisal timing - KBCN1889

The elemental LCC should be undertaken as part of the strategic options appraisal process and used to inform the selection of significant building elements and systems, such as the structure, envelope and building services. Completing the options appraisal after key design decisions have been finalised may reduce its effectiveness and limit the opportunity for the findings to influence the final design. However, the timing requirement can still be met, where the assessor agrees that there is a justification for the appraisal continuing into early AIA Stage 2 - Schematic Design (or equivalent), and clear evidence to demonstrate that: In all cases, the outline elemental LCC plan and identification of relevant project options must be completed by the end of Concept Design

Emissions from construction products – Re-used and reclaimed products - KBCN1869

The Emissions from construction products criteria in BREEAM are intended to apply to newly manufactured construction products and materials. Where a construction product can be robustly identified as previously used and is re-used or reclaimed, it may be considered as outside the scope of the Emissions from construction products criteria. However, any new coatings, finishes, adhesives, sealants, or other chemical treatments applied for the product’s installation must be considered and assessed separately, where relevant.

Emissions from products – Building materials for M&E purposes - KBCN1740

All M&E materials are excluded from VOC assessment requirements. However, from V7 onward, while finished M&E products may be excluded, all on-site applications of paints, coatings, adhesives and sealants used for M&E purposes must be included in VOC assessments under their relevant material categories. 
02 July 2025 - Inclusion of duct insulation removed

Emissions from products – earlier versions of AgBB standard - KBCN0655

Guidance Note GN22 lists the standard AgBB (2015) as a recognised scheme for emissions from building products for pre-December 2015 launched BREEAM schemes. Previous versions of the AgBB scheme are not listed as recognised schemes because earlier versions of AgBB did not include any requirement for the testing of Formaldehyde. If an earlier version AgBB has been used, further evidence will be required to provide additional information on the required Formaldehyde testing. 
10-Oct-2022 - Title amended to align with standard KBCN naming format for clarity and consistency. Made applicable to International NC V6.
 

Emissions from products – EU CLP Regulation and Category 1A/B carcinogen emission limits - KBCN1280

The European Regulation (EC) No.1272/2008 on classification, labelling and packaging of substances and mixtures (‘the CLP Regulation’ or ‘CLP’) applies to all EU Member States. CLP requires manufacturers, importers, downstream users and distributors to communicate the identified hazards of a substance or mixture to the other parties in the supply chain, including to consumers. The regulation requires products with hazardous properties to be labelled in accordance with CLP before being placed on the market. CLP requires products containing any ingredients that have been classified as Category 1A and 1B carcinogens to be labelled as carcinogenic. Therefore, with respect to the BREEAM Category 1A and 1B carcinogens emission limit criteria, for products marketed in EU Member States, if a product’s safety information (e.g. safety data sheet) or a manufacturer’s declaration confirms that that the product does not need to be labelled as a Category 1A or 1B carcinogen in accordance with CLP, then this information would be an acceptable form of evidence for demonstrating compliance with the criteria. 
10-Oct-2022 - Title amended to align with standard KBCN naming format for clarity and consistency. Made applicable to International NC V6.

Emissions from products – installations manufactured off-site - KBCN0137

Internal finishes to installations manufactured off-site such as elevators need to be assessed for the emissions from products criteria. The specification of internal finishes (regardless of whether they are installed on site or in the factory) will impact on VOC emissions. By specifying low VOC finishes, design teams will be encouraging manufacturers to consider the environmental impacts of their products. 
10-Oct-2022 - Title amended to align with standard KBCN naming format for clarity and consistency. Made applicable to UK and International NC V6.
 

Emissions from products – manufacturers’ calculations for paints and varnishes - KBCN0452

Manufacturers' calculations of VOC content, based on the constituent ingredients, can be used to demonstrate compliance with the testing requirement for paints and varnishes.

10-Oct-2022 - Title amended to align with standard KBCN naming format for clarity and consistency. Scheme applicability updated.

Emissions from products – scope of assessment - KBCN0212

General This issue covers any product installed or applied inside the inner surface of the building’s infiltration, vapour or waterproof membrane. Where this membrane is not present, it applies to the inside of the building envelope’s interior-facing thermal insulation layer. Only products that are installed or applied in parts of the building where their emissions are likely to affect indoor air quality need to be assessed. Paints and coatings Any decorative paints and varnishes that occupants are exposed to should be assessed. This is likely to include paints and coatings applied to walls, ceilings, floors, doors, etc. Whole products A finish applied to a product in the factory is assessed as a whole product, and not separately as a paint or coating. For instance, a wood panel has a finish applied in the factory. The whole panel, including all the elements that make up that panel, would need to comply with the requirements set for wood panel products in this issue. The finished product as a whole must meet the performance requirements / emission limits set in the manual. 
11-Oct-2022 - Title amended for clarity and consistency. Content merged with KBCN871.
10-Oct-2022 - Wording simplified. Scheme applicability updated.
16-Jun-2017 - Title and general principle amended to extend the applicability of the KBCN to all finishes. Paints specified for specialist applications covered in KBCN0872.
 

Emissions from products – specialist paints and coatings - KBCN0872

Where a paint or coating falls within: then the paint or coating must be assessed. Specialist paints and coatings are exempted from meeting the VOC content and emission limits where there are no alternative products available that can perform the function, and still meet the emission limits. This must be clearly evidenced. 
02-Oct-2025 Reference to 'VOC content' added and KBCN applied to INC V7 to clarify CN2.1
27-Oct-2022 Wording clarified. New compliance principle added from UKNC V6.
10-Oct-2022 Title amended for clarity. Scheme applicability updated.
13-Mar-2020 KBCN amended to clarify exceptions and applicability.
16-Jun-2017 Content merged with KBCN0212.

Emissions from products – testing to ISO 16000-10 - KBCN1134

Results of testing to ISO 16000-10 can be considered compliant with the relevant testing requirements of the emissions from construction products credit where the product manufacturer can demonstrate the results generated by testing to ISO 16000-10 correlate to results that would be achieved using EN 16516 or ISO 16000-9. This is because EN 16516 classifies ISO 16000-10 as an ‘indirect method’, which means “any simplified, screening, secondary, derived or alternative method. An indirect method can be applied if it provides a result that is comparable to or that correlates with the result of the reference method under the conditions applied. The validity of the correlation with the reference method is limited to the field of application for which it has been established.” 
11-Oct-2022 - Title amended for clarity and consistency. Scheme applicability updated.

Emissions from products – Recognition of carcinogen classifications from non-EU schemes - KBCN1879

Where BREEAM material emission criteria reference Category 1A and Category 1B carcinogens, these classifications are based on the EU CLP Regulation. However, where a certification scheme or testing body does not work directly to EU CLP classifications, other recognised authoritative carcinogen classification systems may be accepted as an alternative basis for carcinogen identification. This can include: • International Agency for Research on Cancer (IARC) • California Office of Environmental Health Hazard Assessment (OEHHA)

Environmental management – no principal contractor - KBCN1213

In order to achieve compliance where there is no principal contractor, the criteria must be met by the party which fulfills an equivalent role in managing the construction. The intent of the criteria is to ensure that the site is managed in accordance with demonstrably sustainable principles by the party having overall control of site management and operations. 

Environmental management – Timing of obtaining ISO 14001/EMAS certification - KBCN0229

The contractor must be in possession of the ISO 14001/EMAS certification prior to starting works on the development under assessment. This is to ensure that the aim of the issue, to ‘encourage construction sites managed in an environmentally sound manner’, can be achieved. To uphold the robustness of BREEAM, the date of certification to ISO 14001/EMAS must be prior to initial works starting on the site.  

Erratum – Applicability of ‘Internal lighting’ and ‘zoning and occupant control’ criteria to Residential buildings - KBCN0978

These criteria, i.e. 7 to 9 and 11 to 13, are not applicable to Residential buildings. 
Technical manual to be updated in the next reissue.

Erratum – up to V6 – checklist A5 – lighting - KBCN1629

Item 1 of Checklist A5 states: This is incorrect. The requirements should be:

Erratum – V6.0.0 Checklist A5 – Criterion 15 - KBCN1746

Checklist A5, Criterion 15 incorrectly states, 'The average g-value of the glazing is ≥ 60%.' This should read as follows, 'The average g-value of the glazing is less than (or equal to) 60%' The intent of this criterion is to limit the impacts of overheating. This will be updated in the next reissue of the technical manual.  

Escalators or moving walks – variable speed drive - KBCN1621

The requirements refer to 'a load sensing device that synchronizes motor output to passenger demand through a variable speed drive'. The intent is that the inverter must operate full-time to moderate output based on passenger demand.

Evidence: Photographs not permitted for security reasons - KBCN0389

Where photographs are not permitted during a post-construction site visit for security reasons, in addition to any alternative evidence requirements listed in the Schedule of Evidence for each issue, the assessor will also need to provide a detailed site inspection report and/or as-built drawings (where permitted by the client). If following this approach, full justification and documentary evidence from the client will be required for QA purposes.

Exemplary credit – Ene 01 credits required - KBCN1556

For the exemplary credit, the requirement for 'Ene 01 Reduction of energy use and carbon emissions' is to achieve four credits, (rather than the eight stated in the manual). This is due to the altered credit scale in NC V6 Ene 01. This will be updated in the next reissue of the technical manual

Exemplary level criteria – not all product categories specified - KBCN0636

The assessment of exemplary level criteria assumes that every product category is specified. It awards credit(s) based on the number of product categories that meet the exemplary levels. Where the assessment does not contain every product category, all product categories must meet the exemplary level requirements. [accordion] [accordion_block title="1 exemplary credit"] Exemplary credit requirement:  3 out of 4 product types meet the exemplary requirements. An assessment has only specified 3 product types in total. To achieve the credit, all product types must meet the exemplary criteria. [/accordion_block] [accordion_block title="2 exemplary credits"] Exemplary credit requirement: An assessment has only specified 3 product types in total. [/accordion_block] [/accordion] 
19-Oct-2022 - Wording and title clarified. Scheme applicability updated. Scenario added.

External lighting – architectural façade lighting - KBCN0650

Architectural facade (or other decorative) lighting which does not provide users with lighting to perform tasks outdoors does not need to be included in the assessment of external lighting. This Issue seeks to ensure that lighting levels are appropriate for tasks which building users will be undertaking outdoors.

External lighting – High frequency ballasts - KBCN0278

The requirement for all fluorescent and compact fluorescent lamps to be fitted with high frequency ballasts does not apply to external lighting.  

Fabric testing and inspection in hot climates - KBCN0790

The requirements for thermographic survey and air tightness testing are applicable to both, cold and hot climates. A suitably qualified professional will advise on the appropriate testing conditions and specific methods in order to address this issue in different climatic conditions. Building fabric air tightness is important in different climates in order to ensure than no additional energy is consumed due to increased heating or cooling demand originating from the lack of integrity of the building fabric.

Fire hydrants and sprinklers – Leak detection - KBCN0680

Where it is confirmed by an appropriate project team member that it is not possible to fully meet the leak detection criteria for fire hydrants or sprinklers, an alternative approach can be implemented for these systems. This must demonstrably meet the aim of the issue by detecting and alerting the building management to major water leaks.     
11 Sep 2024 - Applicability to BIU USA V6 and INC V6 confirmed. New guidance introduced to clarify that BREEAM compliance should not compromise the operation of building safety-critical systems.

Fit-out level – Selecting the appropriate assessment type - KBCN1627

Projects designed and constructed as fully fitted should not be evaluated as ‘Shell and core’ or ‘Shell-only’ where the intent is to limit the scope of the BREEAM assessment without further justification. Where the fit-out level of a project is not consistent, the BREEAM assessment type should be considered in line with KBCN0702

Flow control devices – Use of devices on individual sanitary fittings - KBCN1550

The intent of the requirement for flow control devices is to minimize the impact of undetected wastage and leaks from sanitary fittings and supply pipework. The use of flow control devices on individual sanitary fittings alone does not, therefore, fully meet this aim.

Formaldehyde E1 emissions requirements – Untreated solid wood - KBCN1881

Testing for formaldehyde is not required for untreated solid wood where no formaldehyde containing binders, resins, adhesives, coatings, or chemical treatments have been used in the processing or manufacture. In such cases, a formaldehyde emissions test report is not required. However, the assessor must obtain confirmation from the manufacturer/supplier that:

FSC and PEFC Mixed Sources certified timber - KBCN00091

Products labelled: Meet the BREEAM responsible sourcing requirements. This means any such products: Products carrying the FSC Mix label contain at least 70% FSC certified and recycled material. These products may contain a small proportion of FSC Controlled Wood (KBCN00054). However for BREEAM compliance, the FSC Mix label is sufficient to meet our requirements. 
14-Mar-2024 - Wording clarified and expanded. Relevant prerequisites and requirements clarified. Scheme applicability updated.

FSC Controlled Wood - KBCN00054

The FSC Controlled Wood label minimises the risk that wood comes from illegal or controversial sources, however it does not eliminate this risk. Therefore, products which are: Do not meet the BREEAM definition of responsibly sourced. Where FSC Mix labelled products contain FSC Controlled Wood, see KBCN00091. This means that any such products: 
14-Mar-2024 - Wording clarified and expanded. Relevant prerequisites and requirements clarified. Scheme applicability updated.

Future thermal comfort – mechanical ventilation, mixed mode and limited comfort cooling - KBCN1877

Where a building or space incorporates mechanical ventilation systems, including mixed-mode strategies, the selection of future weather files for thermal comfort assessment should be based on the expected service life of the systems installed. This includes systems providing mechanical ventilation, with or without limited comfort cooling, and mixed-mode spaces where natural ventilation is supplemented by mechanical systems within the same space. For the purposes of this guidance, ‘mechanical ventilation with limited comfort cooling’ refers to systems that may provide some degree of cooling or air tempering but are not designed to fully maintain internal conditions to defined air-conditioned setpoints throughout occupied hours. Although these systems do not provide full air conditioning, their presence influences internal environmental conditions and overheating risk. As their performance is dependent on mechanical components with defined service lifespans, the future thermal comfort assessment should be aligned with the expected lifespan of these systems (typically 15 years), rather than the overall building lifespan.  For schemes where free‑running buildings are assessed using a longer lifespan for future climate scenarios, a shorter system lifespan should be used where mechanical systems are present

Glare control – use of tinted windows - KBCN0862

Solar control or 'tinted' glazing could potentially support the attainment of this requirement. However, the assessor must be satisfied and provide evidence to demonstrate that the particular glazing type, when used on the assessed building for a given location, is meeting this overarching aim of preventing disabling glare. It should be noted that whilst certain types of glazing, such as low emissivity glazing, may be slightly tinted, they may not necessarily be effective in reducing disabling glare. For facades receiving direct sunlight, tinted windows alone are unlikely to be sufficient in the majority of situations.

Glare control – Venetian blinds - KBCN1867

Venetian blinds must demonstrably meet the openness factor and transmittance value for blinds, where specified within a BREEAM manual. If the specification data for Venetian blinds is not available, evidence of the two points below can be provided instead: 1. The blind slats can be fully closed and overlap so there are no gaps between them. 2. The slat material clearly transmits no light, for example solid and opaque plastic, wood or metal. If the slat material is not solid and opaque, and is for example, perforated or made from woven fabric, the openness and transmittance values must be demonstrated in line with the criteria.

Glare control for roof lights - KBCN0319

Where roof lights are present, they must be considered when demonstrating that the glare control strategy provides adequate control/measures for minimising glare in that space. All sources of glare need to be considered when designing out the potential for disabling glare.

Glare control in residential areas - KBCN00040

Glare control criteria apply to building areas such as study bedrooms or facility management offices, where work or study will be carried out and where glare would hinder such activities. It does not apply to other residential areas.  

Glare control – Modelling - KBCN1800

The ‘Glare control’ criteria do not require a specific methodology to be used to identify areas at risk of glare, and in most situations, a simple solar path analysis would be suitable. Alternatively, detailed hourly modelling methods, such as DGP and ASE, may be more appropriate. However, in either case, compliance cannot be assumed. Regardless of the methodology used, the modelling must be supported by robust reporting to demonstrate that each aspect of the criteria has been met.

GN06 Indoor air quality plans - KBCN0618

Latest version: v2.3, July 2026 Guidance Note 6 (GN06) provides guidance to assessors and project teams regarding the content and rigour of an Indoor Air Quality Plan (IAQP) as required by the indoor air quality criteria in BREEAM New Construction and BREEAM Refurbishment and Fit Out. It should not be interpreted as BREEAM criteria. It is intended to provide assessors and project teams with further, flexible information and guidance regarding the rigour, content, and tasks of an IAQP. Download Guidance Note 6 View all Guidance Notes on BREEAM Projects (licensed assessors only) 
15-Jul-2026 - Updated version released (v2.3)

GN10 Assessing mixed use developments and multiple buildings (or units) of similar function - KBCN0623

Summary The purpose of this Guidance Note is to assist BREEAM assessors with scheme classifications and the application of BREEAM for mixed use developments and developments with multiple buildings or units on the same site. This guidance note was revised to v1.0 April 2018 Note, this guidance is applicable to BREEAM standards up to and including V6. For V7 standards, please refer to KBCN0717 View full Guidance Note (licensed assessors only) View all Guidance Notes (licensed assessors only) 
16 Jul 2025 Applicability clarified and reference to KBCN0717 added.
04 Jun 2018 Note added regarding revision and hyperlink updated
17 Apr 2018 Wording clarified

GN18 BREEAM Recognised Responsible Sourcing Certification Schemes and BREEAM Scheme Applicability - KBCN0723

Latest version: v3.7, May 2023 BREEAM awards credits for responsibly sourcing construction products (typically under the Mat 03 issue) to encourage responsible product specification and procurement in construction. To achieve these credits, applicable specified products (as listed in the relevant technical manual) must be covered by an Environmental Management System (EMS) or a responsible sourcing certification scheme (RSCS) recognised by BREEAM. Guidance Note 18 (GN18) lists the responsible sourcing certifications schemes recognised by BREEAM along with the relevant summary scores to be used in BREEAM assessments. Download Guidance Note 18 Download Guidance Note 18 v2.0 (optional for projects registered prior to release of v3.0 in September 2016) View all Guidance Notes on BREEAM Projects (licensed assessors only)

GN22 Recognised schemes for emissions from construction products - KBCN0719

Latest version: v3.2, July 2026 Within the Health and Wellbeing category of several BREEAM schemes, credits are awarded for specifying materials that minimise emissions from building products of formaldehyde and volatile organic compounds (VOCs). The criteria involve meeting emission level performance requirements in accordance with compliant performance and testing standards. Guidance Note 22 (GN22) lists schemes that show equivalent or better performance than the current BREEAM and HQM criteria and therefore can be used to demonstrate compliance with the criteria. This document should be read in conjunction with the relevant assessment issue guidance provided in the appropriate BREEAM or HQM technical manual. The guidance note contains two tables: Download Guidance Note 22 View all Guidance Notes on BREEAM Projects (licensed assessors only) Applying for inclusion in GN22 The list of approved schemes is based on those which have made a successful application to BREEAM. As such, there may be other operational schemes that could potentially be recognised. To be considered for inclusion, the scheme operator must complete an application form, providing full details of the scheme, and submit this to BRE Global for technical approval. A flat rate charge is payable to cover the costs of administering and reviewing the application. GN22 will be updated following the approval of any schemes via this process. The application form (BF1648) provides full details of the application process, and licensed BREEAM assessors can request a copy by submitting a technical query using the webform. Other parties may request a copy by contacting: breeam@bregroup.com 
15-Jul-2026 - Release of GN22 3.2
25-Mar-2026 - Release of GN22 3.1
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
25-Sep-2025 - Updated to provide details of the approval process and title updated.
30-Jan-2025 - Release of GN22 3.0
30-Sep-2024 - Release of GN22 2.9
01-Feb-2024 - Release of GN22 2.8
31-Jan-2023 - Release of GN22 2.7
10-Oct-2022 - This KBCN merged with KBCN0646. Title amended to align with standard KBCN naming format for clarity and consistency. Made applicable to UK and International NC V6.
25-Jan-2019 - Link to Guidance Note updated
12-Mar-2018 - Link to Guidance Note updated

GN24 Demonstrating compliance with Mat 03 in BREEAM - KBCN0721

Latest version: v1.2, July 2026 Guidance Note 24 (GN24) provides additional guidance to assessors and specifiers on demonstrating compliance with the 'Measuring responsible sourcing' criteria in BREEAM (typically in Mat 03). It should be read in conjunction with the Technical Manual for the relevant assessment scheme. It covers: Download Guidance Note 24 View all Guidance Notes on BREEAM Projects (licensed assessors only) 
15-Jul-2026 - Updated version released (v1.2)

Guidance Notes – Applicability to BREEAM INC V6 - KBCN1502

Some Guidance Notes that apply to BREEAM International New Construction 2016 (INC 2016) remain fully or partly applicable to assessments using BREEAM International New Construction Version 6 (INC V6): Fully applicable Partly applicable Not applicable

Hazards – Applicability of the issue - KBCN0541

The applicability of issue Hea 07 Hazard is related to the risk of natural hazards in the country, or region, in which the project is situated. This is reflected in the environmental weightings. The approach to this issue changes according to the country and to the scheme. BREEAM International New Construction 2013 and BREEAM International Refurbishment and Fit Out 2015 This issue should not be taken into consideration for countries which have a weighting for this issue equal or lower than 1%. The suggested threshold to start considering this credit is more than 1%. Where no risks are identified in the risk assessment report, this issue will not be applicable, even if the related weighting has a value higher than 1%. Thus before undertaking a risk assessment, it is recommended to investigate if the area might be subject to the natural hazards listed in the technical manual. BREEAM International New Construction 2016 Countries with no or very low risk, have a weighting of 0% for this issue. Thus, according to the BREEAM scoring and rating system, this issue should not be considered. The suggested threshold to start considering this credit is more than 0%. Where no risks are identified in the risk assessment report, this issue will not be applicable, even if the related weighting has a value higher than 0%. Thus before undertaking a risk assessment, it is recommended to investigate if the area might be subject to the natural hazards listed in the technical manual.

High frequency ballasts - KBCN0284

Fluorescent and compact fluorescent lamps are the only types of lighting where high frequency ballasts are required. The requirement does not apply to any other type of lamps.

Home office services – requirement for telephone points - KBCN1808

Due to changes in technology, telephone points are no longer a requirement where the property is provided with a broadband connection. 

Hotels and other short stay accommodation – cycle storage unit of measure - KBCN0676

The cycle storage requirement for hotels and other short‑stay accommodation is 1 space per 10 staff. Guests or visitors staying at the hotel are excluded from the calculation. Where a hotel includes on‑site facilities such as conference spaces, restaurants, or gyms, visitors to these facilities should also be included in the cycle-storage calculation: 1 space per 10 guests. Specific Note for Refurbishment and Fit Out International 2015 Table 36 in the technical manual incorrectly refers to “1 staff and 1 visitor, or 1 bed.” Please ignore this error and follow the guidance above. 
16-Feb-2026 - Wording update to be applicable across multiple BREEAM Schemes
20-Oct-2025 - Guidance clarified and updated to align with all current BREEAM scheme guidance.
23-Jul-2018 Wording added to include clarification on what to base the calculation of cycle spaces on.
Technical manual to be updated accordingly in next re-issue.

Inclusive and accessible design (non-residential only) - KBCN0863

Shared and accessible facilities are applicable where relevant. For office, retail and industrial buildings, if there are no spaces suitable to be shared with members of the public or community, this can be justified and the ‘inclusive and accessible design’ credit met by demonstrating compliance with the other criteria. Commercial buildings are unlikely to provide spaces that are suitable to be shared with members of the public/community.

Indoor air quality plan – later consideration - KBCN1544

Where BREEAM has been engaged at a later stage in the project (for instance, at the beginning of a Post-Construction Assessment) the IAQ plan must still be produced. The late stage plan must clearly identify opportunities to improve indoor air quality that: The plan is focused on decisions and actions that can still be practically carried out. The indoor air quality plan is an on-going consideration that extends into the operational life of the asset.

Indoor air quality plan – scope - KBCN0294

Where possible, the indoor air quality plan must cover all items in the criteria. This means the plan must be completed for: Within these requirements, there is flexibility for the design team to use their professional judgement to determine what is appropriate to meet the criteria. Any exclusions must be clearly evidenced and justified. As the basis for effective asset management, the indoor air quality plan must be written in a consistent and comprehensive manner. The report must address relevant aspects as fully as possible within the scope of the development. 
11-Oct-2022 Title updated for clarity. Wording clarified. Content merged with KBCN0556. Reference to KBCN1544 added. Scheme applicability updated.

Instant hot / cold drinking water systems - KBCN0136

In principle it is acceptable to use instant hot / cold water systems (for example zip taps) to meet the drinking water requirement, provided that their use is appropriate for the building type and user profile.  

Internal lighting levels where computer screens are used - KBCN0283

For areas where computer screens are regularly used projects can specify 300 lux, as referenced in CIBSE Lighting Guide 7, rather than the levels prescribed in the standard EN 12464:2011. 
07 Dec 2021 Applicability to BIU V6 Commercial confirmed.

International suitably qualified professionals - KBCN1266

In some issues the International NC and RFO schemes prescribe specific requirements for suitably qualified professionals. We appreciate that some countries might have different recognition schemes in place, and these might differ from the BREEAM requirements. Where this is the case, assessors should submit a technical query with appropriate information, and we will review and approve each situation on a country basis.

Internationally approved Ene 01 calculation software - KBCN1177

The following calculation software are approved internationally and can be used, provided local weather files are available in the country of the assessment. Please make sure the approved version, in brackets, is used. If you wish to use a different one, please submit a technical query to BREEAM@bregroup.com providing details of the changes. Any software that has been approved on the ASWL for a particular country can be used in other countries, provided relevant weather files are available. 
27-Apr-2026- TRACE 700 Software added
03-Apr-2025 - IDA ICE Software added.
26-Mar-2024 - Scheme applicability updated.
08-Aug-2022 - Applicability to BREEAM Communities 2012 confirmed.
30-Jun-2023 - Added note relating to software approved for a particular country.

Knowledge Base – Applicability of INC 2016 KBCNs to INC V6 - KBCN1501

The transition from BREEAM International NC2016 to V6 includes a significant update to the Energy section of the technical manual, however most of the criteria in other categories remain unchanged. We are in the process of migrating KBCNs from NC2016 to V6 and adding new V6-specific content. In the meantime, assessors should consider that where the criteria have not changed in the transition, all relevant NC2016 KBCNs are valid for V6. If, having compared the criteria of both schemes, you are unsure whether a KBCN can be applied to V6, please contact us for clarification using the assessor webform.

Leak detection – compliance principle – alternative technologies - KBCN1566

Where it can be demonstrated that alternative water leak detection technologies can meet or exceed the capabilities of systems set out in the BREEAM guidance, subject to approval, these can also be considered compliant. It is the role of the Assessor and the project team to provide evidence and justification in a compliance principle query (see KBCN1555). The following alternative solutions are currently recognised: 
06-Jul-2026 - Title updated for consistency. Scheme applicability updated. Principle also applied to refrigerant leak detection.

Leak detection – system notification - KBCN0245

So long as the compliant system alerts the appropriate person to the leak so they are able to respond immediately, the assessor can judge if the aim of the issue is being met by a reliable, robust and fail-safe means of notification. 
13-Jul-2026 - Title updated for consistency. Scheme applicability updated. Principle extended to refrigerant leak detection, allowing refrigerant leak detection systems to notify a person to initiate shutdown in line with this principle.

Leak detection – using a BMS - KBCN0439

A BMS can be used for leak detection if it can be shown that its integrated or add-on features meet all the requirements for a leak detection system. 
07 Feb 2022 - Applicability to BIU USA Commercial V6 confirmed

Leak detection between building and utilities meter - KBCN1116

For all pipework which is the responsibility of the building owner or occupier leak detection is generally required between the building and the utilities water meter. This requirement is applicable regardless of the length of the pipework. However, for campus type developments or those with multiple buildings on the same site served by common pipework, leak detection is required both within the building and externally for the length of pipework that exclusively serves that building. Where it can be demonstrated that it is not physically possible for a meter to be installed on the pipework outside the building, the requirement for leak detection between the building and the utilities meter can be considered not applicable, and the credit awarded based on the leak detection within the building. 
02 Jul 2024 - Updated to account for campus type developments. Applicability to INC V6 confirmed.

Legally harvested and traded timber – Examples - KBCN0956

The following examples are considered compliant for BREEAM purposes. Legally harvested:
  1. Evidence of compliance with the CPET (see here, timber bought inside the UK only)
  2. FSC, PEFC or SFI certification
  3. Evidence of compliance with the EUTR (timber bought inside the EU only)
  4. ASTM D7612-21 (projects in USA and Canada)
  5. Risk assessment/due diligence documentation demonstrating a low risk of non-compliance with the ‘legally harvested’ requirements given in the manual.
Legally traded:
  1. Evidence of compliance with the CPET (see here, timber bought inside the UK only)
  2. FSC, PEFC or SFI certification
  3. ASTM D7612-21 (projects in USA and Canada)
  4. Risk assessment/due diligence documentation demonstrating a low risk of non-compliance with the ‘legally traded’ requirements given in the manual.
17-Dec-2025 Reference to ASTM D7612-21 added

Legally harvested and traded/Legal and sustainable timber – Reclaimed/recycled timber - KBCN1402

As an alternative to virgin timber and wood-derived products from a Legally harvested and traded timber/Legal and Sustainable source, ‘recycled timber’ is acceptable. For the purposes of these prerequisites, ‘recycled timber’ is defined by BREEAM as: Recovered wood that prior to being supplied to the assessed project had an end use as a standalone object or as part of a structure and which has completed its lifecycle and would otherwise be disposed of as waste. The term ‘recycled’ is used to cover the following categories: pre-consumer recycled wood and wood fibre or industrial by products but excluding sawmill co-products (sawmill co-products are deemed to fall within the category of virgin timber), post-consumer recycled wood and wood fibre, and drift wood. It also covers reclaimed timber which was abandoned or confiscated at least ten years previously. BREEAM requires documentary evidence that all reclaimed/recycled timber products meet the definition of ‘recycled timber’ given above.

Life cycle cost – Multiple assessments on the same site - KBCN000003

Where there are multiple assessments on a site and a single life cycle cost (LCC) plan will be carried out, it is acceptable to use this plan as evidence provided that the results of the LCC plan can be applied to all of the assessed buildings and therefore may have a positive influence on the material specification of such buildings. Where the design of some assessments differ to the extent that the LCC plan cannot reasonably be applied, a separate LCC plan is necessary to achieve credits for this issue. Where multiple assessments are covered under a single LCC plan, there must be sufficient detail for each building to enable them to be adequately assessed. 

LZC – Local regulations and private wire arrangements - KBCN1658

Where local regulations do not permit electricity generated by on-site renewables to be connected directly to the building, and where evidence of the relevant regulations is provided at QA, the requirement for a private wire arrangement can be waived.

Meeting the minimum standard requirement – compliance when chain of custody is broken - KBCN1816

Where there is a broken chain in the last link between the purchase and delivery of certified timber from the supplier and the forwarding distribution of the timber to the site under assessment, such as where the timber has been delivered to a subcontractor or fabricator’s premises instead of direct to site (e.g. as part of a bulk order or where limited storage is available on site), compliance can still be achieved if a documented risk assessment confirms that there is low risk of mixing or substitution of certified and non-certified timber. Ways to demonstrate compliance: A. Verification that the subcontractor or fabricator only purchases and uses certified timber. There must be robust mechanisms in place to verify that all timber materials purchased and delivered originate from sustainably managed sources. This includes maintaining documented timber procurement policies and procedures that mandate certified timber orders and delivery checks. Comprehensive supplier details should be readily accessible for review upon request to demonstrate that all timber is certified. B. Where non-certified timber is handled/stored or sourced, that there are robust control measures in place to prevent any substitution or mixing of certified and non-certified timber at every stage of the process. Documentation demonstrating compliance should be maintained and made available upon request. Examples of appropriate control measures are listed below:
Control
Evidence required
Purchasing records All purchase orders, requisition notes, and contracts must explicitly specify the product details and confirm that materials are to originate from legal and sustainable sources.

Segregated storage of timber

 Site layout map, stock control processes and records to confirm that certified timber is stored away from non-certified timber.
Segregated delivery of timber to site - All timber must be thoroughly inspected and verified before shipment to confirm that it is correctly marked/labelled as FSC/PEFC-certified. - Delivery notes must be accurately maintained. - A second-party verification process to check tickets and stock, must be carried out upon site delivery to confirm certified status of timber.
Documentation Comprehensive documentation must enable independent assessors to trace any timber back to its sustainable source. This includes maintaining purchase records, goods-inward notices, stock records, and sales documentation such as orders and invoices.
The above is guidance and should not replace any local or national requirements for the sourcing of legally traded and harvested timber. 
1 June 2026 - Updated to apply to New Construction and RFO Schemes

Multiple assets on a wider site - KBCN1065

For one or more buildings / units assessed as part of a wider site or campus, compliance can be demonstrated through either: In all cases the waste storage solution must have the capacity to accommodate the recyclable waste material generated from all buildings and their activities. 
30-Mar-2026 - Added text to align with KBCN0696. Scheme applicability updated.
26-Mar-2018 - Published.

Natural ventilation – use of CIBSE TM52 - KBCN0935

For a naturally ventilated building, it is acceptable for the thermal comfort limits and calculation methodology in CIBSE TM52: The Limits of Thermal Comfort: Avoiding Overheating in European Buildings to be used in place of ISO 7730:2005. BREEAM recognises that adaptive comfort models can provide more appropriate thermal comfort limits for naturally ventilated buildings.

Night-time operation – requirement for controls - KBCN1048

Projects or areas of an asset which operate at night-time can adapt or omit the requirement to provide controls or presence detection to align with the building’s hours of operation. This could, for example, include service yards or car parks. The aim of this Issue is to reduce the energy use for external lighting and should not interfere with the building’s operation. 
02 Oct 2024 - Updated to clarify the scope of the this guidance and applied to NC V6 and BIU.

No discharge for up to 5mm rainfall - KBCN0599

The criterion requires no run-off to leave the developed site into the local watercourse(s) for a storm event that results in rainfall depths up to 5mm.  It is not acceptable to collect the rainfall within an attenuation tank and allow the runoff to be released from the site at a restricted rate. This simply slows the rate at which it is released to the watercourse(s). The 5mm rainfall event is considered one of the most common rainfall events and, therefore, a system should be designed to prevent this run-off leaving the site thus protecting a receiving watercourse from pollution.

Occupant control – BMS and degree of control - KBCN0175

A Building Management System controlled set point with local override controls limited to a set range would satisfy the occupant control requirement so long as the temperature range available to building users is confirmed as appropriate for the building type and user profile.

Occupant control – spaces requiring user controls - KBCN0170

This guidance is intended to clarify the types of area for which user controls are required or would be considered beneficial. Zoning is required in all areas of the asset where specified in the assessment criteria. Please refer to the specific requirements of the applicable BREEAM standard to interpret this guidance appropriately. User controls required Spaces where users are expected to have independent control over their environment. User controls not required Spaces where users are not expected to have independent control over their environment. 
14-Dec-2022 - KBCN applicability updated to include BIU. Wording clarified, and amended for compatibility with BIU criteria.

Off-site waste sorting / no dedicated on-site waste storage - KBCN0696

BREEAM assesses the dedicated space for recyclable waste storage, assessing the asset's physical design and layout without relying on management practices that are subject to change. However, we recognise that in specific cases this is not always possible. Accepted scenarios for off-site waste management Requirements and evidence - NC, RFO and BIU Commercial Using an off-site waste sorting approach must still meet all other relevant assessment criteria for the relevant scheme. This includes:
Requirements  Evidence
Waste stream segregation - If recycling is separated: a minimum of three operational waste streams are segregated using clearly identifiable and labelled containers or bags. - If recycling is mixed: show evidence that the waste is later separated into identifiable recyclable streams. Confirm: - Number of waste streams and collection arrangements. - Post-collection segregation (where applicable). - An on-going waste recycling contract.
Operational waste management - Internal waste storage arrangements, defined on-street collection points and scheduled collection times collectively fulfil the functional role of an operational waste management facility. - Storage arrangements must be suitable for the waste streams generated and be durable, hygienic, and clearly labelled. A waste management plan which: - Outlines how the waste is managed and stored between collections. - Shows interim storage is adequately sized based on the frequency of collection.
Accessibility - Waste storage and transfer arrangements must be reasonably accessible to relevant asset users and allow for safe preparation of waste for collection. - Relevant drawings or documentation.
Compliance for all points above must be demonstrated on a case-by-case basis, and the assessor is responsible for confirming that the intent of the issue — facilitating optimal reuse and recycling of operational waste — is achieved. Additional clarification for BIU Commercial V6 Rsc 02 This BIU issue further segregates operational waste into recyclable waste, construction waste, and reusable construction products. 
30-Mar-2026 – Approach updated to clarify and expand on acceptable scenarios where off-site waste collection is accepted. Scheme applicability updated.
22-Jan-2025 - Updated text to allow for permanent external spaces, aligning with KBCN1716. Scheme applicability updated.
18-Nov-2024 - Requirements for BIU projects clarified relating to all answers in Rsc 02. Title clarified.
09-Feb-2024 - Requirements clarified. Applicability updated to include construction waste storage for BIU V6 Rsc 02.
17-Jan-2024 - Scheme applicability updated.
16-Apr-2018 - Wording clarified.

On-site LZC – whole site shared connection - KBCN1424

To be recognised in BREEAM, the on-site Low and Zero Carbon (LZC) technology must have a direct physical connection to the assessed asset. OR Where the LZC technology is; It is acceptable to allocate the renewable energy generated proportionally as a calculation of the asset's predicted energy consumption compared to the total energy consumption of the whole site. To allocate renewable electricity by proportional consumption: Where consumption data is missing, renewable electricity must not be allocated to the assessed asset. In this case, it is assumed that all electricity consumed is sourced from the grid. 
17-Jan-2024 - Applicability BIU V6 Ene 13 removed, as this approach is not applicable to assessing the area of PV fitted.
21-Dec-2022 - Applicability to In-Use V6 confirmed.

Operational waste – Additional requirements for multi-residential buildings with individual bedrooms and communal facilities only - KBCN1519

These criteria are intended for situations where occupants of individual rooms have access to shared kitchens, which can be used to prepare food, regardless of whether central catering is also available. In developments where all catering is managed centrally and no communal/shared kitchens are provided, these requirements do not apply. If, for example, catering is managed centrally, but there are small satellite kitchens for staff to sort/reheat food for residents, the assessor must justify whether and to what extent recyclable waste will be generated in these kitchens and demonstrate that adequate recyclable waste storage provided as appropriate.

Operational waste facility – extension of definition – compliance principle - KBCN1716

The original intent in BREEAM was that an operational waste facility is a centralised, on-site permanent enclosed structure or dedicated internal space in the asset. However, this approach is not always suitable for all asset types. Compliance principle The definition of operational waste facility is expanded to include dedicated external spaces. The principles for operational waste facilities are that they: The table below shows how the original principles are adapted for dedicated external spaces. BIU V6 Commercial only This compliance principle also applies to the storage of:
Principle Compliance principle
Dedicated and permanent. This space can be a dedicated and permanent external space.
Adequately sized and equipped. External spaces must still meet relevant requirements for size, required waste processing equipment and water outlets for composting. Where the asset contains multiple tenants or user groups with different needs, the waste facility can be multiple spaces, provided all of them meet the criteria. The minimum size calculation requirement is based on the combined area of all waste facilities.
Appropriate access and accessibility. The external space must meet requirements for size and access for all relevant users and vehicles, Any external spaces must also be adequately lit through a permanent lighting solution that is fit for purpose. Compliance for this could be shown through meeting criteria in other issues relating to external lighting.
Easy to find. As well as permanent signs, external spaces can be marked out through permanent ground markings, bollards, or other permanent features.
Minimises disruption. Any external facilities must: -       Minimise light pollution and disruptive glare to neighbours, if the space is lit at night. -       Minimise any contamination and air quality issues arising from waste stored. -       Minimise disruptive noise during operation. Justification and, where relevant, evidence of mitigation measures must be provided to show how these principles are being met. Evidence from other relevant assessment issues can be used.
     

Operational waste requirement for catering – applicability - KBCN1162

The additional operational waste storage requirement for developments which include catering is generally only applicable where a commercial scale kitchen is present. Where the design team can justify that there will be no significant waste streams from a modest facility, such as a small cafe, selling only drinks and pre-prepared snacks, the additional waste storage area identified in the default values does not need to be provided to meet compliance. 
21-Jan-2026 Applied to NC V6 and V7 standards

PMV and PPD reporting for mixed mode ventilation buildings - KBCN0632

When assessing buildings where both naturally ventilated and air conditioned spaces are included, reporting the PMV and PPD indices is required.

Pods or privacy booths used as workstations – Impact on view out - KBCN1697

Provided the space or room itself is compliant based on a more traditional furniture arrangement, the enclosure of workstations in booths or pods can be disregarded when considering compliance with the ‘View out’ criteria.

Pol 01 Prerequisite – Applicable standards - KBCN1537

Post Occupancy Evaluation – Bespoke - KBCN0678

It is acceptable to use a bespoke POE providing that the assessor is satisfied that the methodology covers all relevant aspects of a compliant POE. The assessor should therefore refer to the further guidance on POE provided in the BREEAM technical manual for information on what a compliant POE methodology should contain, as copied below:

Post-construction measurement – formaldehyde / VOC levels exceed limits - KBCN0258

If the measured formaldehyde / VOC concentrations were above the prescribed limits, the appropriate remedial action must be taken, as described in the IAQ Plan. The criterion requires confirmation of 'the measures that have or will be undertaken' however it does not specifically address re-testing. We would expect, however that the IAQ Plan should outline what remedial measures are appropriate depending upon the severity and type of the non-compliance with prescribed limits. Such measures may include re-testing as a matter of 'best practice'. Where levels are found to exceed these limits, the project team confirms the measures that have, or will be undertaken in accordance with the IAQ plan, to reduce the TVOC and formaldehyde levels to within the above limits. 
10-Oct-2022 - Title amended to align with standard KBCN naming format for clarity and consistency. Made applicable to International NC V6.

Post-construction measurement – sampling methodology and KPIs - KBCN0380

When testing for VOCs post-completion and pre-occupancy, a representative sample of the building needs to be carried out. Each sample TVOC and formaldehyde measurement needs to achieve the threshold levels individually, either in the initial testing or after remedial measures have been implemented. This ensures that all tested areas of the building are below the limits, and that areas of non-compliance are not ‘averaged out’. 'When providing KPI test results for air quality post-construction / pre-occupancy within scoring and reporting tool, where the limits are exceeded and remediation and re-testing are carried out, the figure should be an average for the whole building post-remediation, as this is the key figure that reflects the building at its certified state'. Where testing is not a requirement of the IAQ Plan and this is not carried out, the original testing figures should be entered and the assessment report should provide details of the remediation measures undertaken to reduce these to within the prescribed limits. 
10-Oct-2022 Title amended to align with standard KBCN naming format for clarity and consistency. Scheme applicability updated. 
06-Dec-2017 Amended to account for situations where re-testing is not required by the IAQ Plan.

Potential for natural ventilation – areas exempted - KBCN0806

For projects where the majority of a building's occupied spaces will meet the criteria to achieve the potential for natural ventilation credit, but a relatively small area will not comply due to functional requirements of the space, (e.g. a lecture theatre), the credit can be awarded where this approach can be justified. The intention is to encourage the design of buildings where a strategy of (potential for) natural ventilation has been implemented as far as practically possible, given functional constraints. 

Potential for natural ventilation – mechanically ventilated and mixed mode assets - KBCN1533

Scope of KBCN This KBCN clarifies the associated compliance note for this credit. Clarification Mechanically ventilated and mixed mode assets can potentially achieve the 'potential for natural ventilation' credit by:
  1. Meeting the relevant criteria for room depth and glazing area OR, where this is not possible:
  2. Show through modelling that the building has the potential to be ventilated entirely via a natural ventilation strategy.
For 2. the second paragraph of the CN allows flexibility in demonstrating adaptability to an entirely natural ventilation strategy. An asset can allow for mechanical ventilation for ≤ 5% of its annual operating hours to boost ventilation rates, and (for this credit) can still be considered to be a fully naturally ventilated strategy. ≤ 5% mechanical ventilation rule The focus of this credit is to demonstrate future adaptability to introduce fresh air into the asset for occupant comfort, so this requirement relates only to mechanical ventilation. Active heating / cooling is not considered. ≤ 5% is a weighted average over all of the asset's occupied spaces. The basis for the weighting will be determined by the modelling software used. Scope and time scale of modelling The modelling covers all occupied spaces. Where relevant, exclusions are allowed - see related KBCNs for details. The modelling period is one year, during the asset's operating hours. The modelling must be based on a plausible scenario that is realistic. This means that:

Potential for natural ventilation – shell only assessments - KBCN0408

Where compliance depends on a speculative layout which is unknown, it is the responsibility of the design team to demonstrate that it is feasible for a future tenant to achieve compliance in the relevant areas via the use of a notional layout. This ensures that the shell allows the potential for compliance, and if this can be demonstrated the credit may be awarded.  

Potential for natural ventilation – use of doors to comply - KBCN0690

Doors can only be used to demonstrate potential for natural ventilation where: In all cases, the use of doors must be clearly and robustly justified by the Assessor. 
19-Oct-2022 - Wording clarified. Scheme applicability updated.
 

Prediction of operational energy consumption – alternative route to Excellent minimum standard - KBCN1336

Where four credits for ‘Prediction of operational energy consumption’ are achieved, the minimum standard for Excellent in Ene 01 can be met. This is independent of meeting any minimum credit score in the issue to achieve the Excellent minimum standard. See KBCN1602. Substantial improvement To meet this minimum standard, the asset must show a substantial improvement in operational energy performance, following the ’Prediction of operational energy consumption’ criteria. This 'substantial improvement' is defined as achieving 4 credits using amended metrics generated using the dynamic simulation modelling and following the Option 1 approach. Amended definitions Performance is calculated based on amended definitions of an actual and a reference building: Amended actual building: Amended reference building: *The reference building servicing system may be replaced with a gas boiler as the heat generation source. Where the performance improvement over the amended notional building does not achieve 4 credits, the BREEAM Excellent standard may still be met. Robust evidence must be provided showing that this level of performance improvement is not possible, based on constraints outside of the control of the project team. 
26-Jun-2023 - Content updated to apply to International schemes. Title and wording clarified. Text on manual errata in NC 2018 3.0 moved to new KBCN.
14-Jun-2023 - Note added to confirm this is integrated into the platform for UKNC V6.1 in all countries. 
24-Aug-2022 - Content updated and applied to UKNC V6
19-Aug-2019 - Clarification for UKNC 2018 3.0.

Prerequisite – Users with special hearing and communication needs - KBCN0969

Intent Criterion 1c ensures that the suitably qualified acoustician has influenced the design of the asset to: What this should cover will depend on the asset type and expected users. Asset users The UK Department for Education document BB93 Acoustic design of schools: performance standards building bulletin 93 (February 2015) defines users with special hearing or communication needs as those with any of the following: This list is not exhaustive, and the suitably qualified acoustician must consider typical asset users, along with the other points a-d when giving early design advice regarding room layout, sound insulation and reverberation times. Accessibility features The principles of accessible design are universal and could be applied in a wide range of assets. Additional features that could be relevant to accessible acoustic design include, but are not limited to: The suitably qualified acoustician must use their professional judgement to determine the scope of any such features as part of the design. Where no features are applicable this must be clearly justified. 
04-Sep-2024: Wording and intent clarified. Information on additional accessibility features added. Scheme applicability updated. Title updated.
01-Mar-2019: Amended to clarify that this is a 'typical' list of users, but does not impose a new requirement.

Prerequisite – Evidence requirements - KBCN1747

Confirmation of compliance with the standards or codes of practice required to meet the prerequisite should be provided by the relevant members of the project team, i.e. the system designer and/or the system installer, as appropriate.

This recognises the responsibilities of those designing and installing the system configuration. Evidence from the manufacturer is not required.

Prerequisite – Reused temporary site timber - KBCN1769

Timber formwork or scaffold boards, that are being reused and are verified as such, can be excluded from the criteria. It is more sustainable to reuse existing timber than to potentially promote the use of virgin timber just to ensure responsible sourcing paperwork is available, which may be logistically hard to obtain for reused timber.

Presence detection – illuminated signs - KBCN1671

The requirements for presence detection do not apply to illuminated signs. In BIU V6, presence detection requirements are included as part of automatic energy saving controls. All other requirements in this criteria must still be met.

Previously developed land – development footprint - KBCN1882

When determining the percentage of the proposed development that is on previously occupied land, the whole development footprint must be considered. This is defined as any part of the development that falls within the boundary of the assessed site (buildings, hard landscaping, car parks and access roads).

Principal contractor or subcontractor no longer operational - KBCN0590

In situations where the principal contractor or other company involved in the project is no longer operational where, for example, the company has gone into administration, the assessor may be unable to obtain all the evidence to meet the requirements of BREEAM or HQM. For some BREEAM Issues, it may not be possible to demonstrate compliance retrospectively, and in such cases, the relevant credits must be withheld. However, in this situation, a lack of complete evidence will not, in itself, prevent the project from achieving a BREEAM rating and, where relevant, a prerequisite or minimum standard can be waived. For example:

INC NC V6 Man 03 Prerequisite - Legally harvested and traded timber or INC V6 Wst 03a – 1 credit to achieve an Excellent Rating

This is based on the project team demonstrating appropriate efforts to obtain the evidence from the company in administration and providing the following: 
28 Oct 2024 - Title and general approach updated. Applied to NC V6.

Project budget - KBCN0893

The project budget is required as evidence to demonstrate that an amount of money has been set aside for the commissioning and testing programme, responsibilities and criteria. It is appreciated that, for confidentiality issues, the principal contractor might not be willing to the project's overall budget with all stakeholders. In such cases, compliance with this requirement will be met where it is clearly demonstrated that the costs related to sustainability measures, which may involve members of the design team, have been included in the overall budget. A wish-list that will later be value-engineered out of the project will not be deemed acceptable. The costs relating to sustainability measures included in the brief must be costed.

Provision of fresh drinking water – risk of contamination - KBCN0302

Mandatory requirements relating to microbial contamination must be met for all buildings, however, the provision of fresh drinking water only applies where there are relevant areas in the building types. It may be justified that the drinking water requirement is not applicable to achieve the credit.    

Recognized emission certification schemes – Publicly available databases - KBCN1887

Some of the emission certification schemes recognized within GN22 maintain publicly available databases of products certified against their scheme requirements. These databases can be used to help assessors and project teams identify products that are certified under recognized schemes. Examples include: EU Ecolabel – https://environmental-data.ec.europa.eu/ecolabel/index.html GREENGUARD – https://spot.ul.com/ Indoor Advantage – https://www.scsglobalservices.com/certified-green-products-guide Nordic Swan – https://www.svanen.se/en/search-for-ecolabelled-products-and-services/?sortorder=6&producttype=0&qry=&productgroup= Blue Angel – https://www.blauer-engel.de/en eco-INSTITUT – https://www.eco-institut-label.de/en/ M1 – https://ymparisto.rakennustieto.fi/rakennusmateriaalien-paastoluokitus-etsi-m1-luokiteltuja-tuotteita Indoor Air Comfort® / Indoor Air Comfort Gold® – https://www.eurofins.com/iac-certified   Please be aware that these databases may include products that are certified under a recognized scheme, but which fall outside the product categories, BREEAM performance level, or the approved certification level recognized in GN22. Assessors must, therefore, verify that the certification scheme and product category are recognized within GN22 and applicable to the product being assessed. Please also refer to KBCN0719 - GN22 Recognized schemes for emissions from construction products

Recyclable, general and organic waste storage – space, labelling and segregation - KBCN1577

Strategies may vary according to the specifics of each project, their waste streams and collection arrangements. The aim of these requirements is to encourage recycling, ensuring that it is correctly sorted and to prevent cross-contamination of waste streams. Label the recycling area This is required to alert building users and collection agencies to the location of the recycling facility. Label each recyclable waste stream This can be done by labelling the bins or their dedicated space within the recycling facility, or both. Mixed recycling bins and / or spaces are clearly labelled with their constituent waste streams. General or organic waste have their own dedicated spaces Sufficient space for general and, where relevant, organic waste is required in addition to meeting the requirements for recyclable waste. This does not have to be within a separate facility, but if combined with recyclable waste storage, there is greater risk of cross-contamination. The following requirements apply in this situation: If provision of waste bins is out of scope Where the provision of waste bins is outside the scope of the developer, it is clearly not possible to label the bins. In this situation, the following compliance options are available: 
21-May-2024 - Link to KBCN0696 removed. Merged with KBCN1380. Minor clarification added on mixed recycling.

Remedial works – timing of acoustic re-testing - KBCN1164

The intent of CN "Remedial works" is that, where these are required, re-testing is carried out prior to handover and occupation. However, it is permissible to carry out the re-testing post-occupation. This is provided any specific guidance for particular building types related test conditions have been met (for instance, it may be that some building specific guidance requires furniture or carpets to not be present during the testing). Compliance cannot be achieved based on a letter from the SQA confirming that the contractor has followed their advice to achieve the required performance. 
07.11.18 KBCN amended to allow for re-testing to be carried-out post-handover.

Reporting PPD and PMV Figures - KBCN0867

The PMV (Predicted Mean Vote) and PPD (Predicted Percentage Dissatisfied) values need to be entered into the scoring & reporting tool for data recording purposes. The thermal modelling specialist should be able to provide values for both the PMV and PPD for the asset. The values to report are the observed range of values for PMV and PPD: If the software or calculation method used does not generate these PMV / PPD metrics, they do not have to be provided. [accordion] [accordion_block title="Example"] An asset has the following thermal comfort ranges across its occupied spaces: [/accordion_block] [/accordion] 
15.09.22 Wording and example clarified.

Residential institutions – short term stay - KBCN0811

The additional criteria for residential institutions do not apply to residential institutions - short term stay. 
26-Mar-2024 - Scheme applicability corrected.

Responsible construction practices – Multiple contractors on the same project - KBCN0352

It is the site that must comply with BREEAM issues rather than any individual contractor. Several different contractors may have obligations to meet compliance criteria. One of the contractors and/or site managers may have responsibility for ensuring compliance during site operations. It is ultimately the client/project team's responsibility to determine and demonstrate compliance.

Restricted movement within a secure perimeter - KBCN000009

Where the movement of pedestrians, cyclists and vehicles is tightly controlled within a secure perimeter due to security considerations, these areas may be excluded from the safe access criteria. Where the whole assessment is within such a zone, the credit may be awarded by default.

Safe access – vehicle delivery routes - KBCN1046

Vehicle delivery routes which cross cycle or pedestrian routes may be acceptable provided there are adequate physical control measures in place to ensure mutually exclusive access and thus minimise the possibility of delivery vehicles coming into conflict with cyclists and pedestrians. Examples of such measures could be vehicle barriers or retractable vehicle bollards, which only allow access to delivery vehicles when required and whose operation and controls account for cycle and pedestrian movements. 
07.06.2018 Intent and wording clarified.

Safe access criteria requirements – Small infill developments and extensions - KBCN0810

For smaller infill developments (typically those with a total gross floor area of less than 1,000m2) where there is no opportunity to make changes to the surrounding site or access to the building itself (other than those directly related to connecting building access points to existing pathways etc.), it is recognised that full compliance with the BREEAM criteria for safe access may not be achievable.  This applies to developments where either: In such instances the existing site layout should undergo a risk assessment against the BREEAM 'Safe Access' criteria to identify areas where there is potential for enhancement across the site.  The findings should be reported to the client and design team and any non-compliant aspects should be resolved as far as practically possible within the scope of the project, however there is no express requirement to achieve full compliance in every respect.  Where the assessor is satisfied that the above requirements have been met,  the credit for 'Safe access' can be awarded. 
31/03/17 Reference to achieving 'Security' credit removed

Safe pedestrian routes – Definition, measurement and verification - KBCN0238

Definition Safe pedestrian routes include sidewalks and safe crossing points, which may be controlled or, for example, be identified by tactile paving, a crossing island or a dropped curb. An element of judgement may be required, in which case justification should be provided. Measurement Distances could be measured, for example, along a sidewalk, across a road at a safe crossing point and along the sidewalk on the other side.  The distance should not be measured diagonally across a road, following the most direct route. Verification The assessor’s site inspection is an important aspect of the assessment and may help to confirm that all relevant information is current and can include photographs of any key areas. This can also help to identify safe crossing points or hazards which may not be apparent from a desktop study. However, web-based evidence may also be used where the assessor is satisfied that it is robust and demonstrates that it is up to date. Where web-based navigation maps (e.g. Google Maps/Street View) are used as supporting evidence, this must include: • Dated and marked-up site plan or a web-based navigation map viewer highlighting: • Current location and type of transport nodes and local amenities. • Current route and distance from the building via a safe pedestrian route. • Plan or map scale. When using web-based evidence for post-construction stage, the assessor must, additionally, provide verification that the information provided for the nodes/amenities is still accurate and up to date. 
29 Aug 2025 - Approach to web-based map data at post-construction stage updated and related wording amended accordingly
07 Mar 2024 - No changes have been made. This appears as 'updated' due to an administrative error.
11 Jan 2024 - Wording re-structured for clarity
19 Dec 2023 - Applicability to BIU V6 confirmed

Sanitary fittings used in religious practices – updated - KBCN1624

Such fittings should not be included in the scope of this Issue. Please refer also to KBCN0418 This guidance relates to fittings and facilities used in some religious practices, for example, for washing before prayer. 
03 Nov 2023 - Updated. Previous guidance was incorrect and contradicted the approach outlined in KBCN0418

Scope of construction works included - KBCN0642

Only the scope of works the principal contractor is responsible for needs to be considered in the assessment of this Issue. This also includes works carried out by sub-contractors that are engaged by the principal contractor.

Scope of issue – clarification – fixed installations - KBCN1660

The scope of this issue covers noise from external building services (or 'fixed installations' as written in the manual) serving areas designed for human comfort. The noise impact assessment excludes:

Seasonal commissioning of Solar Photovoltaics (PV) - KBCN0244

Solar PVs can be excluded from the requirements for seasonal commissioning. This is because commissioning at a particular time of the year will not affect the original commissioning of the system.

Self-contained dwellings / bedrooms with shared facilities – mixed recycling - KBCN1664

Where there is mixed recycling, the number of recyclables containers can be reduced to match the final waste streams being collected. For example, the standard BREEAM requirement is three recyclables containers per dwelling / communal facility. The total combined storage volume requirements are the same as stated in the manuals. To apply this KBCN, the project team must provide evidence to QA of the waste collection policies that apply to the asset.

Shower with multiple shower heads - KBCN0855

To calculate the water use of a shower with more than one shower head, one of the following should be done: 
22 Feb 2024 - Applied to BIU, BREEAM NC and RFO standards

Showers and taps where use is physically time-limited – Calculating flow rates - KBCN1690

Where a timer is used to physically limit the use of showers or taps within a set period of time, this can be used as the basis for calculating a reduced flow rate. For example, where use is limited to 2 minutes, 4 times per hour, for a shower or tap with a flow rate of 2 gallons/minute, the flow rate can be calculated as follows: 2 gallons/minute x 8 minutes/hour = 16 gallons/hour = 0.27 gallons/minute

Single function area and no separately tenanted areas – operational energy monitoring - KBCN00056

Where an asset has: AND AND Provided that the sub-metering by end-use credit is achieved, the sub-metering of ‘high energy load and tenanted areas’ credit can be awarded by default. 
12-Aug-2025 - Title and wording clarified.
26-Mar-2024 - Wording clarified. Scheme applicability updated.

Speculative floor finishes – Take-back and re-use policy - KBCN1702

Where a developer has an established written policy whereby unwanted floor finishes will be removed for re-use elsewhere prior to the tenant taking possession, this can be considered as meeting the aim of this issue. This is only applicable to types of flooring which are suitable for re-use, can be easily removed and do not require the use of adhesives or other permanent means of fixing. Additionally, the tenancy agreement must otherwise prohibit the removal of the flooring by the tenant Evidence to support this approach would include: • A copy of the take-back policy • Details of the flooring type and material • A copy of the tenancy agreement

Stakeholder consultation – Building occupier unknown - KBCN0227

Where the building occupier is unknown, it is still possible to achieve the credit. The end user requirements must be assumed and considered by other project parties (e.g. client, design team, etc.) using their experience and judgement until such time as the occupier is known.  

Stakeholder consultation – Existing shared facilities - KBCN0360

The consultation must include any existing shared facilities relied on to achieve compliance as well as the new facilities. To ensure the shared existing facilities are appropriate and in line with the users' requirements.  

Studio Bedroom Daylighting Calculations - KBCN0733

Where studio rooms in multi-residential projects include multiple area types (e.g. A kitchen and lounge area), compliance can be achieved where either: 1. The entire studio room meets the more onerous requirements or 2. The room is nominally divided into the relevant spaces and the requirements are applied to each as appropriate.

Submitting aftercare & post occupancy evaluation data - KBCN0589

Where credits have been awarded which require post-occupancy evaluation or an element of aftercare data collection (according to scheme requirements) from the building once operational and occupied, the data gathering must take place at the specified time and the findings reported to BRE. The timing of this evidence gathering depends on the criteria of the BREEAM scheme having been undertaken. However, for all schemes, once the evidence is due for submission, it should be sent to BREEAM@bre.co.uk with the following title; 'BREEAM Assessment Type Building Data BREEAM Assessment Reference' For example, a BREEAM 2011 New Construction assessment would use the following title when submitting their evidence; 'BREEAM NC 2011 Building Data BREEAM-1234-5678' 
This KBCN replaces KBCN0695 for HQM.

Testing and inspecting building fabric – Untreated spaces - KBCN0972

Untreated spaces, which are not subject to compliance with statutory energy performance regulations, can be excluded from the scope of the 'Testing and inspecting building fabric/thermographic survey/air pressure testing' criteria.    

Testing and inspecting the building fabric – Shell Only - KBCN0573

For Shell Only assessments with spaces which are intended to be treated post-assessment, imposing the requirement for a thermographic survey on a future user is not acceptable, as it may be difficult and unreasonable to expect them to remediate any defects revealed by the survey. Therefore the credit is still applicable even if building services have not yet been fitted. While we appreciate that it may be more challenging to achieve this credit for a shell only assessment compared to shell and core and fully fitted buildings, please note that the credits within the Management category do have a higher weighting for shell only assessments and there are also fewer credits applicable. Therefore each credit in the management category is worth more, as a percentage of the final score, than they are for shell and core / fully fitted buildings. This, therefore, helps to justify any potential additional burden felt by shell only assessments for this credit.

Thermal comfort – Changing rooms - KBCN1133

Whilst thermal comfort in changing rooms may be considered as significant, such spaces are, generally, outside the scope of this Issue, as they would not fall within the definition of an 'occupied space'. 
17/06/2019 - This supersedes the advice previously provided in this KBCN, which was published in error on 13/06/2018

Thermographic survey – Seasonal constraints - KBCN00031

Where seasonal constraints prevent the thermographic survey from being completed prior to certification at the post construction stage, the requirements can be satisfied with: Thermographic surveys are designed to map the thermal efficiency of buildings and to detect areas where there are breaches in the thermal envelope. Surveys need to be conducted when temperature differences between the external areas of the building and surrounding air can be detected after the envelope is sealed. There may will be instances where the survey cannot be done before certification after the envelope is sealed and as such, the survey would take place after certification. 

Time critical requirements – Concept / Technical Design stages - KBCN1711

The intent of the criteria relating to project stages in BREEAM is to ensure that actions are taken at a time when they can have the intended influence. Where projects are following these defined stages via a traditional procurement route, referring to the project programme and work stages are a robust and convenient way to demonstrate that the intent is met. However, not all projects will follow these work stages. In such cases, the project can show that the intent is met by demonstrating that, for the relevant BREEAM requirement, the activity has happened when the project is at an appropriate stage of development. Concept Design The project stage at which fundamental aspects of the design are developed. Technical Design Once a detailed planning application has been submitted, many aspects of the design will be fixed, and the project is at Technical Design stage. Depending on the procurement route, there may be an overlap between technical design and the construction phase of the works. Additional guidance Sometimes different aspects of the design might be at different project stages. KBCN1156 gives detailed guidance on how to define the project stage for each construction element, based on the design information available for that element. Although it was originally written specifically to address Mat 01 LCA for UK NC 2018 and V6, it may be useful in other situations.

Transport of construction materials – Data and methodology - KBCN0413

To ensure comparability across assessments, the information completed in the scoring and reporting tool should be restricted to the minimum data specified in the technical manual. For the purposes of this BREEAM Issue, the distances reported should be calculated from the point from which the products or materials were sourced, whether this be directly from a manufacturer or from a builders' merchant/distributor: Where products cannot be sourced locally, for example on small islands, the transport required to import the materials or products can be discounted, and only the local onward transport to the site recorded. The aim of this requirement is to encourage developers to consider the impacts of transporting products and materials to site. As such, the criteria seek to address only those impacts, which can be influenced by the developer. 
27.07.2018 Wording amended to add clarity.

Travel Plan – Confirmation of timing requirement - KBCN1665

The criteria require that 'a travel plan has been developed as part of the feasibility and design stages'. To clarify: Ideally, this will be completed and shared with the project team before the end of Concept Design Stage, so that sustainable transport options can be considered in the built form of the development. However, in all cases, it must be demonstrated that the Travel Plan was undertaken at an appropriate stage in the design development to influence decisions on implementing sustainable transport measures.    

User controls – Thermal comfort - KBCN1813

The requirement for user controls does not mandate a specific type of control; e.g. local manual adjustment. Where control is provided indirectly, e.g. via BMS or central management, the assessor must demonstrate that this approach meets the intent of the user comfort and accessibility criteria and is informed by end-user discussions or relevant design guidance. Please refer to KBCN0170 for clarification of the types of space requiring user controls.

Using water from natural underground sources to offset water consumption - KBCN00094

Water from natural underground sources (for instance aquifer water accessed via boreholes) cannot be used to offset: A significant amount of water used for public consumption is already drawn from aquifers. Private boreholes may be drawing water from the same sources as public utility companies. 
27-Mar-2024 - Title and text updated to broaden definition. Scheme applicability updated.

Ventilation – E-cigarettes - KBCN1014

The use of e-cigarettes and vaporizers is considered equivalent to smoking. A smoking ban must also include a ban on e-cigarettes and vaporizers. 
11-Oct-2022 - Scheme applicability updated.

Ventilation – external requirement for window opening restrictors - KBCN1032

Opening restrictors to windows may sometimes need to be installed to meet: Where such external requirements are in force, these requirements cannot be used as a mitigating factor for meeting the BREEAM ventilation criteria. Even with window restrictors, adequate ventilation can still be achieved.

Ventilation – filtration – non-residential assets - KBCN0797

Relevant specialist required The design and specification of air filtration for mechanical ventilation requires the input and review of a relevant ventilation designer or specialist. It is their responsibility to interpret the requirements of this KBCN to align with local conditions. Referenced standard The requirements for air filtration in mechanical ventilation systems follows EN 16798-3:2017 Section B4.2. This standard replaces EN 13779:2007. See KBCN1054. Supply air quality Outdoor air quality The filtering required to achieve SUP2 is affected by outdoor air quality. Outdoor air quality (ODA) in both EN 16798-3:2017 and EN 13779:2007 are defined as: As ODA definitions are relative to national air quality standards, these will depend on local regulations and the location of the asset. Please refer to the relevant specialist on how to correctly classify ODA for your asset. 
18-Nov-2022 Title amended to differentiate between residential and non-residential filtration KBCNs.
06-Sep-2022 KBCN re-written and re-named to clarify BREEAM ventilation filtration requirements in relation to new ventilation standards.

Ventilation – Single room MVHRs - KBCN1042

Single room mechanical ventilation heat recovery units do not need to show that the air intake and exhaust are a suitable distance apart. However, the air intakes of these units must be located to minimise intake of other potential external pollutants. 
11-Oct-2022 - Title amended for clarity and consistency. Wording simplified. Scheme applicability updated.

Ventilation – suitable filtration – residential assets - KBCN1279

Multiple-occupancy residential developments with central air conditioning systems can demonstrate compliance with criterion 6 by incorporating filtration with a filter class of F7. For single occupancy dwellings, it is sufficient to demonstrate that a suitable filtration system is incorporated in the installed HVAC system, in accordance with the manufacturers' recommendations. 
18-Nov-2022 Title amended to differentiate between residential and non-residential filtration KBCNs.
10-Oct-2022 Scheme applicability updated.

Ventilation – withdrawal of EN 13779:2007 - KBCN1054

Standard EN 13779:2007 has been withdrawn (01/02/2018) and in its place the following should be used: Non-residential buildings: Both standards provide three methods for selecting design ventilation rates: Dwellings (only applicable to the BREEAM International New Construction scheme): Both standards provide different options for selecting design ventilation rates: It is the design team’s responsibility to determine and apply the most appropriate method or option(s) for the project undergoing assessment. Existing projects can continue to use EN 13779:2007 where applicable. Any new assessment registrations should use the replacements above. 
11-Oct-2022 - Scheme applicability updated. 
03-May-2020 - Typo corrected to clarify that 'EN 16798-1:2019 Annex B.3 'either Category I OR Category II default design values' are to be used. 
10-Jan-2020 - KBCN updated to clarify methods for complying with new standards. 
01-Sep-2019 - KBCN updated to reference new standard.

View out – Bedrooms in Residential and Residential institutions - KBCN1798

The 'View out' criteria are generally not applicable to bedrooms in assessments of Residential and Residential institutions (long-term stay and short-term stay), where the occupants are likely to be elsewhere during the daylight hours. Although a multi-purpose desk or work surface may often be provided in bedrooms for short-term working, study and other uses, this would not normally be considered as a dedicated workspace. An exception to this would be where a separate dedicated office or study space is provided, for example within a bedroom suite. Please also refer to any building-type-specific guidance, as bedrooms in sheltered housing, for example, may be considered differently. It is the role of the assessor to determine whether individual spaces should be determined as ‘relevant building areas’ in accordance with guidance provided.

View out – communal lounges, living rooms and bedrooms - KBCN1828

The default criteria for these space types requires relevant positions to be within 5m of an opening. Where larger spaces are ≥ 50m2 NIA, the standard view out criteria for the relevant scheme is applied instead. The 5m rule is intended for small scale domestic spaces where proximity to a view out is beneficial. This KBCN recognises that for larger relevant spaces in Residential, Multi-Residential and Residential Institution asset types, a scalable approach in line with commercial buildings is more appropriate.

View out – Corrections to Table – Erratum - KBCN1136

The values for distance from window to workplace in the View out Table are incorrect. The Table should read as follows: 
07-Oct-2025 - Applicability to INC V6 confirmed

View out – eye level - KBCN0581

BREEAM defines an adequate view out as being at seated eye level (1.2 – 1.3m) within the relevant building areas. However, where occupants will not have the option to be seated, for example in some industrial operational areas where the work being undertaken requires occupants to remain standing, the height of the view out can be changed accordingly to suit the eye level of occupants. All other view out requirements have to be met and clear justification provided for changing the height/level of the view out. In some relevant building areas, occupants may not be sitting down to undertake tasks. Allowing the view out height requirements to be changed accordingly ensures building occupants gain maximum benefit from the view out.   

View Out – First Aid Rooms - KBCN1104

The view out criteria do not apply to dedicated first aid or medical rooms in non-healthcare projects. BREEAM recognises the need for user privacy in such areas and that these are intermittently occupied.   
22-07-2026 - Updated to apply to relevant NC standards.

View out – No relevant areas - KBCN0876

If the scope of the assessment does not include any relevant building areas, as defined within the manual, the criteria for 'view out' can be considered as met by default. Only spaces that fall within the definition of relevant areas and are within the assessment's scope need to be assessed.

View out – percentage area - KBCN0166

For the view out credit, compliance must be demonstrated for the percentage of the floor area in each relevant building area, rather than the percentage of the total relevant building area in the building. 
09-Oct-2025 - Applicability to INC V6 standard confirmed. 
14-Feb-2017 Wording amended to clarify that the percentage must be achieved for each 'relevant building area'.

View out – relevant areas - KBCN0268

The aim of the View Out criteria is to allow occupants to refocus their eyes from close work. Relevant areas are spaces where close work in a fixed position is carried out for sustained periods of time. The view out criteria are therefore generally not applicable to occupied areas such as meeting rooms, or other spaces where such close work is not being carried out. Where rooms contain areas of different functions, only relevant areas should be assessed. In this case a notional line can be drawn on the plans and calculations made based on these relevant areas only. However, spaces such circulation routes or other transient spaces within a relevant area can only be excluded if the route or area is clearly defined by the building layout. If this is arbitrary or based solely on a proposed furniture layout, it cannot be excluded. Features of the building layout which may be considered as dictating a function area would include, for example, the position of doors or fixed furniture such as a reception desk or canteen servery. 
11-Jun-2026 - Scheme applicability updated.
07-Oct-2022 - Additional paragraph added to clarify how function areas must be defined. 
21-Sep-2022 - General principle of 'relevant area' added, and applicability of KBCN extended to BIU V6 Commercial.

View out – rooms used for security or other critical functions - KBCN1040

The View out criteria are not applicable to rooms containing security or critical systems or sensitive material, such as CCTV monitoring rooms. Where it can be demonstrated that the presence of compliant windows would compromise a critical function of the space, the criteria can be considered not applicable. 
19-Feb-2025 - Scheme applicability updated. 
06-Mar-2018 - Published.

View out for commercial kitchens - KBCN1216

It is not necessary to provide a view out for commercial kitchens. This is because in such a space it is likely that kitchen staff will move around, doing various tasks. This makes the requirements for the view out to rest the eyes unnecessary.

VOC credit issues – Clarification of scope - KBCN1797

The scope of these requirements does not include furnishings or moveable furniture, e.g. desks, seats or shelving. It includes fixtures and fittings that are integral to the building, such as kitchen units and toilet cubicles. However, bespoke fixtures, such as purpose-made items of fixed furniture, can be excluded, as the specified compliance testing is not appropriate for such items.

Washing machines and dishwashers – Water consumption data - KBCN1571

The water consumption data used to demonstrate compliance may be based on the lowest full wash cycle (i.e. not a pre-wash cycle, for example).

Water Fountains - KBCN0648

Water fountains are generally not accepted to demonstrate compliance with Hea 04 on the basis that a typical water fountain (of the type which projects a jet of water upwards towards a user's mouth) does not allow a water bottle to be filled, and therefore does not encourage adequate fluid intake. However, if it can be demonstrated that a particular type of water fountain is specified that addresses the issues of bottle filling, such as a water fountain with an additional bottle-filler, this can be considered acceptable.

Weather files – 50th percentile - KBCN0117

For the thermal simulation of climate change environments, where this not specified in the manuals, the 50th percentile weather file is used in all cases. This applies also to the use of any alternative weather files or formats which are not listed in the manual. See KBCN1182. 
18-Dec-2024 - Title updated for clarity. Scheme applicability updated. Link to KBCN1182 added.

Weather files – alternative format or location - KBCN1182

If they achieve the aim of the credit, alternative weather file formats not listed in the manuals can be used instead of those referenced in the manual. Format - current climate The alternative weather files must include same variables as the specified weather files for each hour of the year e.g.: - Dry bulb & wet bulb temperature, - Wind speed & direction, - Solar altitude & azimuth, - Cloud cover etc. For example, TMY (Typical Meteorological Year) is an accepted alternative format for BREEAM, meeting the requirements above. The assessor or design team must verify this and ensure that meeting the BREEAM criteria does not become easier by using the alternative weather file. Format - projected climate These alternative files must be based on climate projections with equal or higher temperatures than those specified in the relevant criteria, setting an equally or more robust standard for overheating. Where there are no suitable weather files available for projected climate change, use any one of the following: To modify weather data for existing climates into the relevant future climate change scenarios required in the criteria. Alternative location Where the weather file for the nearest location for the project is not representative of the actual location’s climatic conditions, the project team can use the weather file from another nearby location which is more representative. This can take account of the climatic influences of altitude, prevailing wind, proximity to climate-moderating features, or heat island effect. 
19-May-2025 - Added example alternative format. Added links to future climate change resources.
18-Dec-2024 - Merged with KBCN1013. Scheme applicability updated.

Weather files – files applicable internationally - KBCN0732

The technical manual refers to Prometheus, which is not applicable internationally for the projected climate change scenario criteria. Until an alternative has been formally approved, the following can be used: Climate Change World Weather File Generator ASHRAE weather data files 
18-Dec-2024 - Title updated. Link updated.

Zoning and control – Dimming - KBCN1018

Localised dimming controls installed in line with the criteria, along with a master on/off switch, can be considered as meeting the aim of the requirement for 'controls' in open plan offices. The aim is for occupants to have local control over their lighting and maintain comfortable lighting levels.

Zoning and occupant control – access to lighting controls - KBCN00032

The relevant areas for the criteria apply only to areas where users are expected to have control. For instance, this means that areas intended for the general public, or a shop floor would not be expected to have lighting controls. The general principle which applies to user access to general environmental controls (heating, cooling, ventilation) may also apply to access to lighting controls. See KBCN0170. However, the the exact approach may differ between the two types of systems and assessor judgement must be used to determine compliance. In all cases zoning is required in all areas of the asset where specified in the assessment criteria. Please refer to the specific requirements of the applicable BREEAM standard to interpret this guidance appropriately. 
14-Dec-2022 - KBCN applicability updated to include BIU. Wording updated. Link to KBCN0170 created.

Zoning and occupant control – control via BMS - KBCN0703

Occupant control via a BMS is not normally considered a compliant BREEAM solution. Any solution that requires the action of a third party (e.g. facilities manager) is not considered under the control of the occupant. Solutions where all relevant building occupants have control via a user-interface via BMS may be considered compliant where the assessor is satisfied that the aim of the criteria are met. User-control must be available directly to the occupant. 
21-Jul-2026 - Applicability updated
01-Aug-2017 - KBCN applicability to Thermal comfort Issue removed.

Zoning and occupant control – PIR detection systems - KBCN0335

The aim of the Health & Wellbeing category is to recognize ways to benefit occupants through giving them control of their lighting environment. Without manual overrides, presence or absence detection lighting controls (such as PIR detection systems) are not compliant with the criteria. BREEAM recognises the energy efficiency benefits of detection systems in buildings through the Energy category. In some cases, the design team may have to prioritize one particular lighting strategy to the detriment of achieving a credit elsewhere.
Information correct as of 3rdAugust 2026. Please see kb.breeam.com for the latest compliance information.