Information correct as of 15thJuly 2024. Please see for the latest compliance information.

Acoustic sample testing approach – calculation procedure - KBCN1675

The methodology sets out a sample testing approach which can be applied to group rooms into those of similar room type or performance requirement category or construction type. Where rooms are grouped to the same use and construction for instance, only 1 in 4 pairs of adjacent rooms would need to be tested, and the results would be representative of all similar rooms e.g. where there are 12 pairs of similar offices and 3 are tested and are compliant, all 12 would be deemed compliant (or 100%). Therefore, it is not a requirement to test 80% of the rooms to be 80% compliant for those projects where a sampling approach can be applied.

Alternative methods for ensuring the re-use or recycling of materials - KBCN1150

In a scenario where management processes result in the recycling or re-use of a waste stream, this can be considered as one additional compliant waste stream within the question. For example, sites where a take-back scheme is utilised with installers/manufacturers for a particular waste stream, and the manufacturer re-uses or recycles this off-site. In order for this to be compliant the following must have been met:
  1. The Assessor must clearly outline the waste stream which is being recycled/re-used
  2. The Assessor must clearly outline the process which occurs, including: (a) How the waste leaves the site, and (b) What happens to the waste after it leaves the site
  3. If the waste is transferred to another party (such as a supplier in a take-back scheme), there needs to be evidence of a current valid agreement/contract in place outlining that this service will be provided for at least 12 months.
  4. All relevant legislation is complied with.
  5. This should be a regular occurrence of waste, and subsequently should be collected at least once a month.
  6. If the waste remains on-site temporarily before it is removed, the waste should therefore be stored in line with the assessment criteria outlined in WST 01.
Note: it is not possible to award credits for the same waste stream twice. For example, a take-back scheme for cardboard, as well as a recycling point for cardboard in the centralised waste storage location, can only be considered to be one waste stream.

Amenities – Access to cash - KBCN0359

An ATM inside a building would be acceptable provided that its opening hours are similar to those of the assessed building, regardless of whether there is a nominal charge for the service. Cash-back from the till in a retail outlet is not compliant. Access to cash should be available to the building users at all relevant times of the day. This should not require a prior purchase of goods and should provide access to other services, such as checking account balances.

Amenities – Assessed building is one of the listed amenities - KBCN0264

Where the assessed building is itself included in the list of amenities, that particular amenity criterion can be deemed to be met, e.g. a supermarket development itself meets the proximity to food outlet required for a Retail type building.

Applicability – Management – common areas only assessment - KBCN1559

Principle  In an assessment of common areas only, building management are still responsible for the common welfare all users and for policies governing the overall asset.  Evidence  For assessments of common and tenanted areas, the scope of the manual states:  “The assessment must include evidence of a representative sample of the tenants to ensure that central management practices are in place and fully implemented in line with the assessment criteria.” For assessments of common areas only, evidence is required from building management only. 
Issue Scope of issue
Part 2
Man 01 Building user guide No change to the criteria or evidence requirements. A building user guide is required regardless of scope.
Man 02 Management engagement and feedback No change to the criteria or evidence requirements. Engagement with building users is required regardless of scope.
Man 03 Maintenance policies and procedures Applies only to core systems which serve the common areas and are maintained by the building management. This includes any core systems which also serve tenanted areas (for instance, asset-wide ventilation systems) where this cannot be separated from tenanted space.
Man 04 Environmental policies and procedures Applies to asset-wide environmental policies only. Answer D can apply to improvement targets for common areas only, where this can be separated from tenant targets.
Man 05 Green lease Where there are tenants occupying the asset, this issue is not filtered out. Consideration of green contracts are within the control of building management regardless of scope.

Applicability – no occupied spaces - KBCN1551

Principle Where: Credits specifically related to occupied space are not awarded. Outcome The tables below show how this principle applies to affected issues.
Issue Credits available Scope
Part 1
Hea 01 Daylighting Y Only answer C is available.
Hea 02 Control of glare from sunlight N
Hea 03 Internal and external lighting levels N
Hea 04 Lighting control N
Hea 05 Minimising flicker from lighting systems Y
Hea 06 View out N
Hea 07 User comfort control N
Hea 08-13 Y
Part 2
Hea 14 Thermal comfort N
Hea 15 Smoking policy Y
Hea 16 Indoor air quality management Y
Hea 17 Acoustic conditions N
Hea 18 Legionella risk management Y
Hea 19 Drinking water management Y
16-Dec-2022 - KBCN title and scope updated for better visibility. Error in Hea 03 amended. Applicability of KBCN applied only to affected issues (N, or modified answer options) with to minimise header space in the UI. Original content on Resources moved to new KBCN.

Applicability – Resources – common areas only assessment - KBCN1557

In an assessment of common areas only - the scope of some issues are modified in the table below. Answers which are unavailable cannot be filtered out, and cannot be awarded by default.
Issue Scope
Part 1
Rsc 02 Reuse and recycling facilities Answers D and E are only available if occupants store waste in a central waste storage facility within the assessed common area. All other credits are available.
Part 2
Rsc 06 Optimising resource use, reuse, and recycling Answer D is only available if occupants store waste in a central waste storage facility within the assessed common area. All other credits are available.

Applicability – tenanted assets with common areas - KBCN1593

Principle Common areas Common areas must include: Mixing recyclable and non-recyclable waste in one bin is not acceptable, even if recyclable content is extracted later from the mixed waste. If the recyclable waste is commingled, the waste collector demonstrates that they separate commingled waste in the minimum number of waste streams defined in the methodology.
Tenant or building management controlled areas The issue criteria can be met through multiple storage areas, or a central store. Where there are multiple storage areas, the space requirements for Answer C or D can be calculated based on the combined area of all storage areas. The waste storage area requirements for tenants and building management must be calculated separately as stated in the manual.

Apportioning Water Consumption – common areas only assessment - KBCN1679

For assets where only the common areas are being assessed, the water consumption targets and actual figures reported should be based on the water used within the assessed areas only. Therefore, where metering is provided for the whole building consumption and no separate metering of common areas is available, a logical assessment of the energy and sanitary (and other) water use and distribution should be carried out so that the figures are based on an accurate estimation of water usage within the common areas. Apportioning must not be based purely on the percentage of floor area. A logical assessment could be based, for example, on the percentage of water using equipment installed, such as the proportion of toilets/taps/dishwashers etc within the scope of the assessment against those outside of the scope. Justification and calculations should be provided within the evidence to support the reported figures.

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.
03-Nov-2020 - Issue 2.0 of UK RFO technical manual updated with new CN detailing the above.

Assessing multiple buildings in BREEAM In-Use - KBCN0840

BREEAM In-Use has been developed as an environmental assessment method to assess existing assets. Typically, an asset consists of a building or part of a building. In certain circumstances, multiple buildings can be classified as a single asset by a client. This is often the case where buildings are of similar physical structure and built form, have common building servicing strategies and common management arrangements. To assess multiple buildings as a single asset using BREEAM In-Use, the criteria listed below must be confirmed by a licenced BREEAM In-Use Assessor. This will ensure a meaningful outcome of the performance of the asset.
  1. All buildings must have the same building function, similar performance, and be of the similar design and age.
  2. Buildings must either:
    • Be connected to and share common services to meet the comfort and sanitary demands of the occupants. This includes: heating, ventilation,cooling and hot water.
    • If these services are provided locally: identical servicing strategies as well as specification of equipment must be applied across all buildings.
  3. All buildings must share similar building envelope (the physical separator between the interior and exterior of a building) and structural specifications. Buildings do not need to be physically connected, however: the specification of the envelope must be largely the same to ensure that the performance of each building fabric is comparable in terms of the range of assessed characteristics including thermal efficiency.
  4. Building management and maintenance policies, procedures and approach must be the same across all the buildings that make up the asset to ensure consistent implementation.
  5. All buildings must be located on the same site. The boundary of the site must be drawn where responsibility of management or ownership of the site changes.
  6. The Assessor must collate the required evidence from each building that is included in the asset and where performance against the BREEAM requirements varies, the final score will be determined by the space with the lowest level of performance.
  7. If alterations are made to the management and the physical structure of the asset that in turn changes the applicability of the eligibility criteria above, re-certifications must be undertaken at a building level if the Multiple Buildings approach is no longer applicable.
Please note: if the buildings differ from each other in a number of areas, a multiple buildings approach has limited value to all parties involved. In such cases, the rating will not clearly identify the areas for improvement within each building. By assessing the buildings separately, the granularity of the assessment is increased which will in turn provide owners with more detailed information on how improvement plans can be rolled out.

Assessments of owner-occupied or common areas only assets - KBCN0804

In situations where an asset is owner-occupied, or if there are no tenanted areas within the assessed area, it is still possible to achieve credits under MAN 11. Instead of awarding credits based on green leases with tenants, credits can be awarded based on the owner/manager having in place policies/processes outlining specific targets (considering at least energy, water and waste efficient practices) applicable to the assessed area. With regards to the evidence required in this scenario: the assessor must submit documents (which could include, but are not limited to, contracts or policies) that outline how the owner/manager has set and measured these targets.

Assessor comments submitted within BREEAM In-Use assessments - KBCN0962

Assessor comments are an extremely important part of the certification process, and are used to give the Quality Assurance (QA) team at BRE Global an understanding on why the Assessor has awarded credits. Assessor comments must be provided for any question which has credits awarded. The comments must provide the following information: In situations where the client has submitted detailed comments (on the client side of the tool) which already outlines all of the relevant information noted above, then the Assessor can simply provide a shortened comment verifying the accuracy of the client comment. Note: Assessor comments must be written in English in order for the QA team to review the assessment. Where the majority of the information is provided within the client side, then this also needs to be in English, or simply translated over within the Assessor comments. Example of compliant Assessor comments (related to HEA 01 – SD221 – 2.0:2015) “2 credits have been awarded as 20% of the building envelope is glazed. Verification of this figure can be seen within the calculation provided within [insert evidence name]. Please also find photographic evidence of each side of the envelope [insert evidence name], as well as the drawings for each envelope which the calculations were based on [insert evidence name]."

Asset classification – co-living developments - KBCN1568

The following is a guide only. Every co-living project will combine a varying mix of residential with managed spaces, and assessors must in all cases review the suitability of the criteria to determine the most appropriate asset classification. Co-living features Co-living developments generally combine: Classification Using building regulation classifications as a guide As a guide, assessors can also consider how their asset is classified according to local regulations. For UK NC assets, KBCN1225 provides additional clarification:

Asset Footprint - KBCN0664

The following guidance can now be used to interpret the meaning of the asset footprint: Building only: Building located on a site:
  1. Responsibility of management or ownership of the site changes;                                                                                                                                                                                  OR
  2. If a site includes multiple assets and there is a clear demarcation of the area associated with each asset, then this must be considered to be the site boundary for the asset footprint.
Calculation methodology for LE01 Percentage planted area = [Total area planted (m²) / Asset footprint (m²)] x 100
GdT 08/12/16 - Added additional guidance on deducting area from asset footprint.

Asset performance eligibility criteria – Industrial assets - KBCN1471

The following guidance seeks to clarify how the eligibility criteria within the Scope section of the technical manual should be interpreted, particularly (though not exclusively) for industrial-type assets. 1) The asset must be a complete and finished structure. A complete and finished structure means an enclosed, permanent structure with a roof and walls intended to accommodate people and/or processes. a) Asset Performance No more than 20% of the Gross Internal Area (GIA) can be classified as ‘unfitted’ at the point of submission. The assessment information provided must be correct at the point of submission to BRE Global for certification To demonstrate that no more than 20% of the GIA (the assessed area) is ‘unfitted’, 80% of the GIA of the asset must be ‘ready for occupation’. This means it must be in a finished state, ready for occupation, or already operating in the intended function/process. This ‘finished’ state could be a controlled environment for a manufacturing process, warm or cold storage, IT or other technical operation. Alternatively, this could be an unconditioned internal environment, such as storage or packing and where most likely the only service fitted is electric lighting. The requirement for 80% of areas to be operational or ready for occupancy applies to the total assessed area, including areas fitted out for processes and spaces conditioned for human occupancy. 2) The asset must contain occupiable or occupied space(s) which is designed to be continuously occupied for 30 minutes or more per day by a building user. This is required to assess some criteria and award credits relating specifically to human occupation. In order to demonstrate that a space is designed to be continuously occupied for 30 minutes or more per day by building users these spaces must be conditioned for human occupation and provided with basic services. Some examples of asset areas that meet this definition are offices, homes, retail, leisure areas which have ventilation, light and energy and water supplies, e.g. heating and/or cooling and access to a toilet and hand washing facilities. However, process-based assets, which have any areas that are environmentally controlled by building services systems for human occupation OR processes, are eligible for assessment. a) Asset Performance An asset not yet occupied can still be assessed. Provided that it meets the criteria above and is ready for occupation
09 Aug 2021 Eligibility Criteria relating to occupied space updated

Asset performance eligibility criteria – Self-storage assets - KBCN1514

The following guidance seeks to clarify how the eligibility criteria within the Scope section of the technical manual should be interpreted for Self-Storage assets.

Defining self-storage assets

Self-storage provides space for individuals to rent and store their personal or business belongings. The storage space - also referred to as storage units - is typically rented on a month-to-month basis.  This space will make up the most space for any self-storage asset type. Typical Scenarios:


Eligibility Criteria
Criterion 1(a): no more than 20% of the Gross Internal Area (GIA) can be classified as 'Unfitted'. As per KBCN1471, this means that at least 80% of the GIA “must be in a finished state, ready for occupation, or already operating in the intended function/process. This ‘finished’ state could be a controlled environment for a manufacturing process, warm or cold storage, IT or other technical operation. Alternatively, this could be an unconditioned internal environment, such as storage or packing and where most likely the only service fitted is electric lighting.” Criterion 1(b): no more than 20% of the Gross Internal Area (GIA) can be classified as 'Vacant'. This requirement would only apply to office or staff spaces within the Self-Storage asset rather than the storage units themselves. The Storage units must be in a condition ready to be leased but do not need to be occupied during the period of assessment. Criterion 2: The asset must contain occupiable or occupied space(s) designed to be continuously occupied for 30 mins or more per day by a building user. This is required to assess some criteria and award credits relating specifically to human occupation. Within Self-Storage assets, office and amenity areas will meet this requirement. The Self-Storage space will also meet this requirement provided it has ventilation, light and energy and access to water supplies. Criterion 2(b): The asset must have been occupied at least 12 months prior to the start of the assessment. For Self-Storage assets “occupied” means that office areas must have been occupied and the storage units must be ready to be occupied 12 months prior to the start of the assessment.
Asset Type/Sub-type
This asset type shall be classified as Industrial. The asset sub-type shall be Distribution and Storage.

Automatic control for basin taps – Multi-residential long-term stay assets - KBCN1587

Only taps that are specifically used in staff, communal or public hand washing basins are required to meet the automatic control requirements set out in Criterion 1. These requirements do not apply to residents’ private sanitary facilities in residential long-term stay assets.

BREEAM In-Use Platform Migration – FAQs - KBCN1598

  1. Why have we made this change?
This is intended to provide a better user experience for both Clients and Assessors. The BREEAM Projects platform is faster and more stable than the BREEAM In-Use platform, reducing the risk of data loss. Unifying our schemes on a single platform will also allow us to be provide new features that can benefit all users.
  1. Will this change the current process?
There are some small changes to the appearance and functionality of the system and how you access the platform. However, this should not result in a significant change to how you work.
  1. Will this improve Operational or QA timescales?
Currently, the QA workflow for BREEAM In-Use assessments is primarily a manual process. After its migration onto the BREEAM Projects platform, the QA process will be carried out using the online tool, leading to improved efficiency in the QA assessment workflow and more streamlined processing of QA submissions.
  1. Will my login details change?
There will be no change to the login details for either BREEAM In-Use or BREEAM Projects users.
  1. Do I need additional training to use the new system?
We have designed the tool to maintain the functionality of the BIU platform. There will be some differences in the user interface, however additional training should not be necessary. We will be sharing a system user guide in June 2023 for further support.
  1. Will active assessments be moved over?
Yes, assessments that are currently in-progress will be moved over.
  1. Will previously certified assessments be moved over?
Yes, assessments that are already certified will be moved over.
  1. Will I be able to see the evidence for all my assets in the new platform?
All the assets and evidence will be transferred to the BREEAM Projects platform and will work just as they did in the BREEAM In-Use platform. However, please remember that the BREEAM License terms and conditions require Assessor organisations to maintain complete and accurate records of the assessment documentation for a period of ten years. BRE only uses the evidence provided for the purpose of auditing and making a certification decision. We do not keep all assessment evidence once certification has been completed. Please ensure that you maintain your assessment records locally to prevent loss and to meet BRE’s terms of service.
  1. Will my existing credits within the BREEAM In-Use platform be moved over?
Yes, all existing credits within the BREEAM In-Use Platform will be moved onto the BREEAM Projects Platform as part of the data migration process.
  1. Will I be able to still access BIU platform after migration?
No. The BREEAM In-Use platform will be retired after the migration has been completed.
  1. Is the BREEAM Projects platform available in different languages?
Yes. There is an option to switch languages within the platform. This will change the display language of the interface and, where supported, within the technical guidance This will be available in the following languages:
  1. Will it be possible to request an invoice for BIU credits in BREEAM Projects?
The payments process for purchasing BREEAM In-Use credits will not change. It will still be possible to purchase BIU credits using a credit/debit card, as well as being able to request an invoice via a cost proposal.
  1. Is the log in process the same for Clients and Assessors?
Yes, the process to log in is the same for clients and assessors. Each will use their existing credentials to log into BREEAM Projects. The tool will then identify the user and display the relevant pages.
  1. How do I access BREEAM Projects?
You can access BREEAM In-Use using this BREEAM Projects link:
  1. How do I log in from the USA or China?
Our Clients and Assessors in the USA or Chinese markets will be able to log in using the same login credentials that they currently use on the BIU Platform. They will also be provided with an option to switch the language within the tool.
  1. Will I have the ability to work in local currencies?
No additional currency support has been added to the platform as part of this migration.
  1. Will the terms of use change when we move to the Projects Platform?
All users, when accessing BREEAM Projects for the first time, will be required to agree to our ‘Terms of Use’ for the system. These Terms will not be too different from the existing ‘Terms of Use’ within BREEAM Projects and BREEAM In-Use platform. Whenever updated ‘Terms of Use’ are issued, users will be prompted to read and accept these before accessing the system.
  1. How do I contact BREEAM for support?
Assessors are encouraged to submit all enquiries using the webform, which can be found via the Assessor Support tab in BREEAM Projects. This provides drop-down menus to select the Department/Area and to choose further options, to ensure that your enquiry goes to the correct team. Note: To help us provide an efficient service, Assessors are required to submit all technical queries using this webform. Clients and other interested parties may continue to contact us by emailing the dedicated BREEAM In-Use email address: [email protected]

19. How do I upload evidence on BREEAM Projects?

 Please follow this link to view guidance: Updated Process for Uploading Evidence
28 July 2023 FAQ 19 added

BREEAM Projects – basic asset details – asset constructed over different years - KBCN1626

Where different parts of the asset have been constructed over different years, in Basic Asset Details enter the year representing the largest proportion of floor area. For example, if 60% of the asset area was constructed in 2008, and 40% in 1993, use '2008' as the year of construction.

Calculating the percentage of tenants - KBCN0805

Where calculations are undertaken to determine the percentage of tenants covered by a compliant green lease agreement, only those tenants that are part of the assessed area must be taken into account. Where tenants are not part of the BREEAM In-Use assessment, they must be excluded. Please note: the calculation for the percentage of compliant tenants must be based on the number of tenants, not on the floor area.

Car sharing group - KBCN1510

The term, ‘car sharing group’, as a sustainable transport measure, may be interpreted differently. For the purposes of the BREEAM Standards, therefore, the following additional guidance should be applied, to support assessors’ understanding of the criteria, when determining compliance. 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, thus 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. However, evidence and justification must always be provided to demonstrate that the above ‘Aim’ is met.

Carbon dioxide sensors – Erratum - KBCN1636

The question table for this issue should read as follows:
Credits Answer Select a single answer option
0 A Question not answered
0 B No
2 C Yes, in occupied spaces subject to large and unpredictable or variable occupancy patterns
4 D Yes, in all occupied spaces
This will be updated in the next reissue of the technical manual

Carbon monoxide detection – Combustion appliances located outside - KBCN1586

Where all combustion appliances are located outside in the open air, no flues pass through an occupied space and there are no enclosed parking areas, the associated credits can be filtered out as per Criterion 1.

Centralised air handling units (AHU) - KBCN0941

The requirements of the: do not apply to centralised AHUs, where it is not technically feasible to sub-meter energy use by separate functional, tenanted or floor areas. The credit(s) will be assessed based on the remaining applicable energy uses.
06-Mar-2024 - Scheme applicability extended to V6.

Clarification – access to daylight - KBCN1648

Q11 of this issue asks 'what percentage of lit asset floor area has access to daylight?' For this issue, 'access to daylight' means: Spaces daylit from the side Spaces daylit from above

Clarification – percentage of end uses - KBCN1650

This percentage is measured by the energy consumption (kWh) of significant energy uses, not by the number of end uses.

Clarification of ‘Hazardous Chemical’ - KBCN1111

A 'hazardous chemical' can be considered to be any substance that is not found naturally in the environment, which has the potential to cause damage to the environment or the health of the building occupants (e.g. oil, fuel, solvents, pesticides, biocides, etc.).

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.

Combined system for heating / cooling and domestic hot water - KBCN0329

It is permissible to have combined metering for a shared on-site or district system that combines heating / cooling, and domestic hot water generation. In all cases, justification is provided in the QA report for the combined metering, and explains why it is not technically feasible to provide separate meters.
21-Sep-2022 Applicability of KBCN added to BIU V6. Amended to include district heating and cooling networks.

Compliance: Applicability of criteria to scheme’s previous versions - KBCN0430

Criteria set for a scheme version are not applicable retrospectively to previous versions.

Compliance: Conflicts of interest for the BREEAM assessor - KBCN0107

The assessor can be someone within the design team or work for the same company as the design team member(s) but the assessor must identify and manage any potential conflicts of interest. The assessor should also make BRE Global aware of the situation so that, should it prove appropriate, the certification report can be escalated to a more detailed level of quality assurance checking. If the assessor is a member of the company who are producing evidence to demonstrate compliance, there must be clear separation of the roles and the BREEAM/HQM assessor must not be personally responsible for producing such evidence. BREEAM/HQM is a 3rd party certification scheme. Therefore, it is important to avoid any conflicts of interest between those producing evidence and those awarding credits to ensure the robustness of the certification process. 

Condition survey – refurbishment in the last 5 years - KBCN1522

Where an asset has been refurbished, refurbished elements listed in criterion 2 can be excluded from the condition survey if: The intent of Rsc 01 is to give asset management a complete understanding of the condition of the asset. The requirement for 5 years is to make sure that this information is relatively up-to-date, and allows effective maintenance of the asset and management of any minor defects. All example scenarios below assume that the refurbishment was carried out less than 5 years ago. Any refurbishment works carried out more than 5 years ago must follow the full criteria of this issue. [accordion] [accordion_block title="Scenario 1"] A major refurbishment to a Commercial asset covered and effectively documented refurbishment to: a. Structure. b. Mechanical components. c. Electrical components. d. Plumbing. e. Fire protection. It did not cover: f. Communications and life safety systems. g. Health and safety conditions. All major defects were resolved. Credits for the condition survey, and for rectifying defects are awarded based on elements f. and g. only. [/accordion_block][accordion_block title="Scenario 2"] A major refurbishment has covered and documented all items in criterion 2. All major defects were resolved, but there are some outstanding minor defects that are being monitored and maintained by asset management. BIU V6: This issue is filtered out as per criterion 1. BIU 2015: The relevant credits are awarded. Minor defects are common after major building or refurbishment works, and typical building contracts provide a period for the resolution of minor defects. As long as major defects are resolved by the refurbishment, and asset management are aware of and managing minor defects, these items can be excluded from the condition survey. [/accordion_block][accordion_block title="Scenario 3"] A major refurbishment covered all elements, but there is no record of the refurbishment of mechanical and electrical components. A condition survey covering these items is required. Relevant credits are awarded for surveying and addressing any defects for these elements. [/accordion_block] [/accordion]

Control of glare from sunlight – hotel rooms - KBCN1087

The primary function attributed to hotel rooms is that of a bedroom and as such, lighting and resultant glare are not considered to be problematic for these spaces. The only exception to this is where designated additional office space is provided. In these circumstances it is the role of the assessor to determine if individual spaces should be determined as ‘relevant building areas’ in accordance with guidance provided. Glare control criteria apply to building areas where lighting and resultant glare could be problematic for users.
01 Nov 2023 - Applicability to BIU V6 Commercial confirmed
This KBCN aligns with KBCN0666 from UKNC 2014

Converting water consumption into litres per year from new EU energy labels - KBCN1548

The following conversion factors may be used to convert the water consumption on new EU energy labels from litres per cycle (L/cycle) into litres per year (L/year): Dishwasher: multiply water consumption figure on EU energy label by 280 (to go from L/cycle to L/year). Washing machines: multiply water consumption figure on EU energy label by 220 (to go from L/cycle to L/year). This follows equivalent guidance for converting energy consumption (see KBCN1462).
25 Aug 2023 - Correction to 'typo error' for dishwasher conversion factor - previously shown as 208, now corrected to 280.

Cycle facilities – Separate showers within shared gender-specific (single gender) facilities - KBCN1601

Cultural norms and expectations in relation to privacy may vary. The guidance on providing separate showers in the above situation is, therefore, clarified as follows: Where showers are not divided into individual cubicles, or are only partially separated, this does not preclude compliance. However, the assessor must be satisfied and provide justification that the arrangements are in line with local custom and appropriate to the building type and the demographic of building users.

Cycle spaces – Minimum and maximum requirements - KBCN0637

These remain applicable where the 50% reduction allowed for building locations with a high level of public transport accessibility is in effect. This means that, for instance, a large retail will still need to provide at least ten customer cycle storage spaces and could meet compliance with a maximum of fifty.
22-Nov-2023 Scheme applicability updated.
18-May-2017 Previous KBCN on large retail adapted to include any minimum requirement for cycle storage spaces.

Cycle spaces – Folding bicycles and scooters - KBCN00024

The provision of cycle storage that is only suitable for folding bicycles or scooters is not compliant. Providing reduced storage space for folding bicycles or scooters in place of compliant cycle storage may limit future travel options.
14 03 2018 Wording clarified and reference to scooters included.

Cycle storage – 50% reduction applies to all users - KBCN1631

Where a 50% of reduction in required cycle storage spaces is allowed for any reason (for instance, for meeting a threshold for good public transport accessibility), this applies to all asset users. This includes staff, and any applicable users such as customers, visitors or residents. However, any minimum or maximum requirements remain the same. See KBCN0637. This principle aligns with BREEAM New Construction and Refurbishment and Fit-Out.

Cycle storage – Multi-residential long-term stay - KBCN1592

For the purposes of calculating the cycle storage requirements, residents should be considered as 'staff'.

Cyclists’ facilities – Combining different facilities - KBCN0683

Cyclists' facilities can be combined, provided that all relevant compliance requirements are met and it is demonstrated that there is no conflict impacting on their use. For example, compliant showers can be combined with compliant lockers in one room, subject to the principle below. For combined facilities to count as multiple facilities, they must be capable of being used independently of each other at the same time (where relevant) with reference to any space requirements, access, gender and privacy issues.
11 Jan 2023 - Applicability to BIU V6C confirmed
10 Feb 2022 - Updated to clarify that facilities can be combined where there is no conflict.

Cyclists’ facilities – Matching additional cycle spaces - KBCN00093

The minimum number of showers/lockers/changing facilities required for BREEAM compliance is determined by the minimum number of compliant bicycle spaces required, not by how many total compliant bicycle spaces have been provided. Where more than the minimum number of compliant cycle spaces has been provided, there is no requirement to provide more than the minimum number of showers/lockers/changing facilities.
01 Feb 2022 - Wording clarified and applicability to BIU V6C confirmed

Cyclists’ facilities – Multi-residential / residential institutions - KBCN0967

Where there is a BREEAM requirement for residents, compliant facilities within their accommodation can be considered as cyclists' facilities. Separate facilities for staff must be provided as required to achieve compliance.
22 Aug 2023 Applicability to BIU V6 Commercial confirmed.

Cyclists’ facilities – Within toilet facilities - KBCN00050

To comply with the criteria for cyclist facilities, showers should not obstruct the use of other facilities. Where a shower is located in a room with a WC, this cannot be considered compliant, unless it can be unequivocally demonstrated that the WC is provided over-and-above the requirements of relevant standards or regulations for general and disabled WCs.

To ensure that there is no conflict between the use of general or disabled WCs and the use of cyclist facilities.
25.10.18 KBCN reworded to improve clarity.

Determining boiler efficiency - KBCN1223

The boiler efficiency should be based on the Higher Heating Value (HHV) or the Gross Calorific Value (GCV). Where the information related to the efficiency of the boiler is only available in Lower Heating Value (LHV) or Net Calorific Value (NCV), it will need to converted using the following formula: HHV = LHV x 0.9 GCV = NCV x 0.9

District heating / cooling / hot water – entering data into the Online Platform - KBCN1536

For assets which use district heating / cooling / hot water, information on the district systems are entered into Ene 09a and 09b. In Ene 05 / 06 / 09, answer 'no' to first question "Is space heating / cooling / hot water generated on-site?" then navigate to: The Online Platform differs from the manual structure, however it does not affect scoring in any way. All data entered contributes to the asset energy calculator. Assets with on-site and off-site systems Only answer questions on the system which provides the most signifcant heating or cooling to the asset. If an asset includes both on-site and off-site systems, choose the one which delivers the most energy annually.

Durable and resilient features – Features not present - KBCN1547

The requirements of Rsl 04 aim to minimize the frequency of building component replacement.  Options D, E and F relate to specific features that are vulnerable to damage through the building's operation. Therefore, if it can be demonstrated that an asset does not include any such features, this requirement can be considered met, because there is nothing to protect. Evidence confirming the above must be referenced and provided in the assessment. It is unlikely that Option C will not apply in a commercial asset. However, if an assessor believes this to be the case, they should contact BREEAM Technical with full details and justification.
20 Oct 2023 - Applicability to BIU V6 Residential removed - Options can be filtered out where not applicable.
14 Dec 2022 - Updated to include Options D and E, in addition to the reference to Option F.

Electric vehicle charging stations – Availability - KBCN1128

This option requires the number of electric vehicle recharging stations (EVCS) to be based on a percentage of the total car parking for the building. To meet compliance, the intent is that recharging stations be available to all building users, including customers and visitors. However, where overall parking numbers are low, it may be difficult to effectively distribute the EV charging spaces between general users and priority groups. In such cases, the design team must provide evidence that this aspect has been considered when locating the EV spaces, however, the decision on how to distribute these may be made by the client or, for speculative development, by an appropriate member of the design team. In situations where parking is limited to priority spaces only, the above guidance still applies.
11 Jan 2023 - Applicability to BIU V6C confirmed
17 Sep 2022 - Updated to allow more flexibility in relation to how EV spaces are allocated

Eligibility criteria – BIU International Residential V6 - KBCN1668

The Eligibility Criteria for BIU V6 Residential have been updated, and the guidance below supersedes Criterion 2 in the V6.0 technical manual: Criterion 2)

a) Submission for certification must be a minimum of 12 months from completion of the dwellings.


b) For a Part 2 assessment, 12 months’ utility consumption data must be available for a minimum of 80% of the dwellings.


c) The asset must be intended to be a primary residence of the occupants.


Emergency lighting - KBCN0185

Maintained systems featuring emergency light fittings which are also used for normal operation, are assessed for this issue. Non-maintained lighting which is only activated in an emergency can be excluded from the assessment. NC / RFO / BIU V6 Ene 17: The aim of these credit(s) is to encourage and recognise energy-efficient fittings. Non-maintained emergency lighting will very rarely be activated and in such extremes the emergency requirements must not be compromised. BIU V6 Hea 05: Flicker is eliminated from maintained systems only.
24-Jan-2024 - Scheme applicability updated to include BIU V6.

Ene 24 methodology - KBCN1613

This issue is scored based on % improvement relative to the BIU V6 carbon benchmark and average annual improvement across the reporting periods. [accordion] [accordion_block title="BIU V6 carbon benchmark"] Standard CO2 emissions: the tailored benchmark of a UK asset. Climate adjusted CO2 emissions: the benchmark for International assets. It adjusts the UK benchmark to account for national and regional differences. Net CO2: the actual CO2 emissions of the asset. Annual reduction in CO2 emissions: the annual average % figure used to score credits in Ene 24. [/accordion_block] [/accordion] Example scenario An international BIU asset calculates the improvement in CO2 emissions across 2 reporting periods. Calculation The asset demonstrates a 20% average annual improvement vs the benchmark. It scores 3 exemplary credits. How the calculation accounts for different reporting periods Most assessments will report on multiple fuels in each period. [accordion] [accordion_block title = "Calculating time between reporting periods"] Time between reporting periods is measured in days (this is converted to years in the final calculation). Time is measured from the middle of each reporting period. If more than one fuel is reported, the individual mid-dates for each fuel are combined through a weighting calculation. The mid-date is proportionally weighted towards fuels with larger associated CO2 emissions. [/accordion_block] [accordion_block title = "Maximum time between reporting periods"] The maximum time between any reporting period is 1460 days (3 years 364 days) between: These dates are not weighted by fuel consumption. [/accordion_block] [/accordion] Additional notes

Energy consumption reporting – Link to Man 04 - KBCN1612

The link to meeting compliance with Man 04, outlined in Ene 23 Criterion 1 is incorrect and should be disregarded. Answer option D in Man 04 includes targets for Energy, Water and Waste. Whereas the intent of Ene 23 relates to targets for Energy only. This will be updated in the next reissue of the technical manual.

Enhanced waste collection in the asset - KBCN1528

Where the asset collects 6 or more unique residential waste streams on-site, answers G and H are available without the need for additional off-site collection points. If the asset can provide enhanced waste collection and sorting on-site, then this is effectively the same as having a compliant collection point in the local area. Example scenarios [accordion] [accordion_block title="5 waste streams on-site"] An apartment building has compliant facilities or kerb-side collection for 5 residential waste streams. There is no collection for composting or garden waste. The asset achieves the requirements for answer C only if all relevant criteria are met. There aren't enough waste streams to meet the threshold for answer G. [/accordion_block] [accordion_block title="7 waste streams on-site"] An apartment building has compliant facilities or kerb-side collection for 7 residential waste streams. There is no collection for composting or garden waste. The asset achieves the requirements for answer C, and answer G if all relevant criteria are met. [/accordion_block] [accordion_block title="7 waste streams on-site, with off-site collection point within 500m"] An apartment building has compliant facilities or kerb-side collection for 7 residential waste streams. There is no collection for composting or garden waste. An off-site collection point within a compliant distance can collect 5 waste streams, however only 2 are unique (different from what the asset already collects on-site). In total there are 9 unique waste streams collected on-site, kerb-side, or within a compliant distance. The asset achieves the requirements for answer C, and answer H if all relevant criteria are met. [/accordion_block] [/accordion]

Erratum – scope of issue - KBCN1498

Criterion 1 states: "Where external lighting or car park lighting are not necessary from a safety perspective, the associated credits can be filtered out of the assessment." What this means is: The inclusion of the word 'safety' in this criteria is misleading and will be removed in future versions.
28-Feb-2024 - Wording clarified.

Erratum – up to V6 – methodology – no default energy assumptions - KBCN1630

The scope of the issue applies only to systems with significant energy use. The methodology section states that the online platform will calculate default values, and use this to indicate which systems are in scope. This is incorrect, as default values are not automatically calculated. The energy use of each system will need to be manually estimated. This can be done based on:

Erratum – up to V6.0.0 – Ecological features – Answer D – planters - KBCN1543

Outdoor planters and traditional planted areas can be considered as one feature for the purposes of Answer D, provided there is enough planting on the site to meet the intent of the issue. To meet the requirements of Answer D, the following must be demonstrated:  
20-Dec-2023 – The intent of this KBCN was to simplify compliance with Answer D. This has now been updated to clarify that it only applies to Answer D, thereby removing the potentially negative impact on meeting the requirements of Answer C.
24-Aug-2023 - Wording clarified. Change will be updated in the next re-issue of the manual.

Erratum – up to V6.0.0 – compliant cycle storage - KBCN1595

Criteria Instead of answer C, criterion 3 should refer to answers D and E. Evidence The criteria references for this issue are incorrect, and will be corrected in the next re-issue. Checklists and tables The headings in Table 20 do not match these answers. Table 20 will be revised with these updated headings:
Home size Answer D Minimum cycle storage 2 credits Answer E Additional cycle storage +1 additional credit
Studio or 1 bedroom 1 cycle space / 2 homes 1 cycle space / home
2 - 3 bedrooms 1 cycle space / home 2 cycle spaces / home
4+ bedrooms 2 cycle spaces / home 4 cycle spaces / home

Erratum – up to V6.0.0 – missing and inconsistent definitions - KBCN1567

Scope The scope of this issue includes blackwater. Criterion 4 should include 'd) blackwater harvesting'. Definitions The definition for 'blackwater' is missing from this issue, and the definition for 'greywater' is inconsistent with other issues in the manual. The following text will be updated in the next revision of the manual: 'Blackwater - Wastewater that has been discharged from kitchen and utility sinks, urinals and toilets within the asset.' 'Greywater - Water that has been discharged from all sources other than kitchen and sewage within the asset.'  

Erratum – V6.0.0 – cooling efficiency parameter – EER / SEER - KBCN1560

In the asset energy calculator guidance, the parameter given for cooling efficiency is 'SEER' (Seasonal Energy Efficiency Ratio). This is incorrect and should say 'EER'. This affects the following tables:
International USA
Commercial V6.0.0 Table 19 Table 18
Residential V6.0.0 Table 16 Table 16
This will be updated in the next manual re-issue.

Evidence – Photographs not permitted for security reasons - KBCN0389

Where photographs are not permitted during a 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.

Evidence of no risk – Use of Approved Standards and Weightings List - KBCN0959

The current BREEAM International Non-Domestic New Construction Approved Standards and Weightings List (ASWL) can be used as evidence to demonstrate that a country has ‘no risk’ to all natural hazards apart from flooding (which is considered within POL 02 of BREEAM In-Use 2015 and Rsl 01 of BREEAM In-Use Version 6). Any country which has a weighting of 0% for Hazards within the current ASWL can provide this to BRE Global as evidence. As flooding is not included within the Hazard section of the ASWL, it must be evidenced separately. Therefore, in order to achieve maximum credits within MAT 05 or Rsl 03, the assessment must also provide evidence that the asset is in a ‘low or zero flood risk area’ under the requirements of POL 02 (BREEAM In-Use 2015) or Rsl 01 (BREEAM In-Use Version 6). Note: BREEAM In-Use International Assessors who are not BREEAM International Non-Domestic New Construction Assessors, will be unable to access the ASWL. In this instance please send a technical query to BRE Global outlining the country which the asset is located, and BRE Global can confirm the current weighting for that country. This KBCN does not apply to BIU assessments under BREEAM NOR or BREEAM SE
29-Nov-2023 Clarification - N/A BREEAM NOR/SE 
01-Oct-2022 Updated to apply to BREEAM In-Use Version 6
16-Aug-2016 Amended to clarify situations where there is no access to the ASWL

Facilities provision for public bicycle sharing systems - KBCN0276

Where a public bicycle sharing system is being used to account for up to 50% of cycle spaces provided, the total number of cycle spaces, including those provided by the bicycle sharing system, should be the basis on which the compliant cyclist facilities are provided. This is because people using public cycle spaces will still need the use of cyclist facilities such as showers and lockers.
13.08.2018 KBCN applied to the BREEAM In-Use scheme.

Fire hydrants and sprinklers - 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.   Previous guidance - superseded on 30 May 2024 To meet BREEAM compliance, emergency systems such as fire hydrants and sprinklers need also to be covered by a leak detection system. The leak detection system must cover all mains water supply between and within the building and the ‘site boundary'.
30 May 2024 - New guidance introduced to clarify that BREEAM compliance should not compromise the operation of building safety-critical systems. Applicability to NC V6 standards confirmed.

Flood risk – Site situated across numerous flood zones - KBCN0532

Where a site is situated across more than one flood zone, the flood zone with the highest probability of flooding, i.e. the worst case scenario, must be considered for the purpose of the BREEAM assessment. An exception to this would be where the areas in the higher probability zone include only soft landscaping and it can be demonstrated that access to the building will be maintained in a flooding event. This is to ensure that the site has adequately managed the worst case scenario level of flood risk associated with the site's location. 
22/07/2022 Applicability to HQM One confirmed
07/03/2018 Updated to include circumstances where an exception may apply.

Flood risk – use of flood maps only in FRA - KBCN1524

Answer option E (Commercial) or F (Residential) If a flood risk assessment considers flooding from rivers and seas only, flood risk is zero / low, and the following requirements are met: It is acceptable for the flood risk assessment to be carried out by a relevant member of the team. It does not require a competent individual (see manual definition) to do this. Most sources of flooding are site-specific and require specialist input and calculation to quantify. However, flood maps meeting the criteria above can provide an acceptable level of assurance of overall flood risk from rivers or seas without the need to engage a specialist. Answer option C Where the risk of flooding is medium or high, flood mitigation measures are required (criterion 3). These mitigation measures must be defined by either: The FRA can still be produced by a relevant member of the team. Exemplary credit This option is only available if a site-specific FRA was carried out by a competent individual, and cannot be based only on flood maps that give an allowance for climate change. Example scenarios [accordion] [accordion_block title="Low / zero flood risk"] National flood maps cover flooding from rivers and seas. The flood risk from these sources is zero / low. The compliant FRA can be produced by a relevant member of the team. [/accordion_block] [accordion_block title="Medium / high flood risk"] National flood maps cover flooding from rivers and seas. The flood risk from these sources is medium / high. Flood mitigation measures are required. The local authority provides some general flood mitigation measures for the area, but these are not relevant to the assessed asset. Instead, a competent individual is consulted on relevant flood mitigation measures for the asset - their recommendations are recorded in the FRA. The compliant FRA can be produced by a relevant member of the team. [/accordion_block] [/accordion]

Flow control devices – residential accommodation - KBCN0415

The credit for the specification of flow control devices in WC areas or facilities does not apply to ensuite facilities in residential areas, e.g. ensuite facilities in individual private bedrooms and a single bathroom for a collection of individual private bedrooms in halls of residence, key worker accommodation or sheltered accommodation. The credit and criteria are however applicable to buildings which have guest bedrooms with ensuite facilities, e.g. hotel rooms, and communal WC areas or facilities, e.g. communal WC facilities in hotels or hostels and care homes. In accommodation where occupancy is long-term and there is a sense of ownership of the space, flow control does not need to be assessed as the occupants are likely to detect and report leaks.
26 Oct 2023 - Applicability to BIU V6 Commercial confirmed

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

The intent of the requirement for flow control devices is to minimise 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.

Flow control devices for multiple blocks - KBCN1186

The criteria are set to encourage isolation of the water supply to each WC block when it is not being used. If a single flow control device, for example one programmed time controller, is adequate to switch the water on at predetermined times that suit the usage patterns of more than one WC blocks or facilities, this can be used to demonstrate compliance. Please note that if only one timed controller is used for a large area/number of facilities, the assessor must justify that this is appropriate to the usage patterns within the building and confirm that multiple timers would be redundant (i.e. they would all be set to the same time).  Consideration should be given of any facilities that may be open longer than others, requiring these timers to be programmed differently in different areas. As long as the aim of the credit (‘to reduce the impact of water leaks that may otherwise go undetected’) can be achieved through the specification of an appropriate number of flow control devices, the credit may still be achieved if timers cover more than one WC area/facility to prevent minor water leaks.
14 Apr 2023 - Applicability to BIU V6 Commercial confirmed.

Full or Partial sub-metering - KBCN1203

Fully sub-metered
For an asset to be considered as fully sub-metered both heating and cooling consumption must be sub-metered for each tenant.
Partially sub-metered
For an asset to be partially sub-metered, the asset must have at least one tenant that has both heating and cooling consumption sub-metered. An area cannot be considered either fully or partially sub-metered where only one of heating or cooling is sub-metered.

Glare control – alternative measures - KBCN0139

Alternative forms of glare control to those listed in the guidance can potentially be accepted, if it can be justified to the BREEAM assessor that the proposed system will effectively eliminate disabling glare and the assessor accepts this.

Heating and cooling provided through one system - KBCN1204

Where heating and cooling is provided through the same system and it is not possible to separate the consumption related to each, then one sub-meter covering the system can be considered to be fully sub-metered.

Installed controls – ‘Asset does not have both heating and cooling’ - KBCN1678

In the technical manual, the intent is that Q1, Q2 and Q3 allow the credits to be filtered where the asset has 'neither heating nor cooling', in line with the assessment tool. This will be updated in the next reissue of the technical manual.

Interlock controls – clarification - KBCN1491

An interlock is a control that is wired so that when there is no demand for heating / cooling in a space, the heating / cooling generator and the associated pumps are switched off. Use of thermostatic radiator valves (TRVs) alone does not provide interlock. Partial interlock means that the cooling and heating interlock controls are separate. However, the control function may be set up to minimise the possibility of simultaneous heating and cooling. Total interlock means the controls are wired so that simultaneous heating and cooling is not possible. Where there are separate local heating or cooling units present, these will also need to be wired into the control system for total interlock to avoid the possibility of simultaneous heating and cooling.

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.
07/12/2021 Applicability to BIU V6 Commercial confirmed.

Intruder alarm systems – apartment buildings or similar - KBCN1572

Scope The scope of this KBCN applies to any residential asset that: A typical example is an apartment building. Principle The asset as a whole is protected by systems that are fit for purpose to ensure the safety and security of the asset, its users and their property Implementation Security requirements for apartment buildings will vary greatly depending on factors such as: Because of this, BREEAM cannot provide specific guidance on how intruder alarms and access control are configured to meet the principle. It is the role of the assessor and a competent third party (for instance, this can be a 'competent person' as defined in Rsl 10) to evidence how this principle is achieved for the asset as a whole. Evidence from a compliant security risk assessment carried out in line with Rsl 10 can be used to support this issue. Management-based solutions As a Part 1 issue, this intent must be achieved by systems which are intrinsic to the asset. Management-based solutions (such as a concierge service, or security guards) cannot be used to achieve answer E (intruder alarm systems). Answer F (alarm receiving centre) can only be achieved with a system that complies with Answer E.

Intruder alarms – Requirement for these to be audible when activated - KBCN1597

Where it is justified by the security consultant, project team or building management that a 'silent' intruder alarm system is more suited to the asset’s overall security strategy, this can be considered as meeting the Definition in our guidance.

Leak detection – extent of responsibility - KBCN0688

For the credit to be awarded, all the pipework in a development that the owner/occupier has responsibility for must meet the leak detection criteria.  In situations where third party organisations place restrictions on the pipework that can be metered, the scope of works (and hence placement of a meter for the use of leak detection) will start immediately after this point.  For instance where the utility company's meter is placed midway between the boundary and the building, the scope of leak detection for BREEAM purposes will be between utility meter and the building, not to the boundary (as stated in the guidance). The scope of the BREEAM criteria is only on pipework that the owner/occupier has control over.

Leak detection – recycled water use - KBCN0433

The leak detection requirements still apply to all relevant water systems where water recycling systems are specified for WCs and urinals. Recycled water should be considered as a valuable resource as it replaces potable water use and, in many instances, recycling systems will still incorporate a mains-water back up.    

Leak detection – using a BMS - KBCN0439

A BMS can be used for leak detection purposes if it can be demonstrated that its integrated or add-on features meet all the requirements for a leak detection system.
07 Feb 2022 - Applicability to BIU V6C confirmed

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.

Minimising flicker – scope of issue - KBCN1639

Principle Flicker from all lighting systems is eliminated. This means eliminating flicker in: Only emergency lighting is excluded. See KBCN0185. Lighting flicker is undesirable regardless of location or length of exposure. Commercial scope Eliminate flicker in all lighting. Residential scope Eliminate flicker in:

Minimising watercourse pollution – Areas to be assessed - KBCN1633

Criterion 2 should be interpreted as follows: The intent is to provide a list of areas that are likely to present a risk of watercourse pollution. All the listed areas must be considered, however, where a listed area is not present, or it is present but poses no risk of watercourse pollution, this should be justified with supporting evidence. Where the development does not include any of the listed areas, or none of the areas present poses a risk of watercourse pollution, justification and evidence must be provided and this issue should be filtered out, in line with Criterion 1.  

No light liquid separators - KBCN0957

It is only possible to select the answer option 'No light liquid separators on site' within POL10, where there is evidence which demonstrates that the asset can select 'Asset does not require light liquid separators or grease separators' under POL01.
Amended: 17/11/2017
Reason for change: Correction in spelling, and removal of reference to a specific scheme.

Non-specific levels of performance within local legislation - KBCN1152

In areas where the local legislation does not specifically outline the exact requirements related to inclusivity of access, it is often difficult for asset owners to demonstrate how they exceed the legal requirements. Therefore these assets can demonstrate compliance by providing evidence that the asset meets all of the following: The asset has features within which ensure that persons which are less able-bodied, are able to utilise the same facilities as all other building users. These include: Alongside this, the Assessor must provide confirmation of the exact legislation which is applicable to the asset, and provide a short statement outlining the requirements within it.

Occupancy calculation – Buildings with shift patterns - KBCN0431

In buildings with shift patterns, as shifts may overlap, the building users calculation should be based on the maximum occupancy of the building at any given time.

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 - KBCN0696

All schemes Where a building's recyclable waste is collected regularly and sorted off-site, the aim of this issue can be met by: This means providing evidence for all of the following:
  1. A waste management plan which provides on-site storage between collections, adequately sized based on the frequency of collection.
  2. An on-going waste recycling contract.
  3. The typical recycling rates from the waste management company.
  4. A permanent structure (or internal space) within the asset site boundary that can be converted to comply with all criteria requirements. Layout drawings must be provided showing how this space could be converted in future, including meeting all relevant criteria for: • User and vehicle access, • Area requirements for waste storage, • Appropriate size and number of containers for the expected waste streams, and • Space allowance for any additional waste processing requirements e.g. compactors, composting containers, water outlets etc.
BIU only This KBCN applies to off-site sorting for construction waste arising from fit-out activities (Answer E, BIU V6, Rsc 02). It does not apply to the storage of reusable construction products (Answer F, BIU V6, Rsc 02). This must be a permanent structure or space currently in the asset. BREEAM assesses the sustainability of the intrinsic asset. Where robust management practices may be accepted as an alternative, BREEAM still requires that the asset's facilities have the potential for future conversion to achieve compliance.
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-demand public bus services - KBCN1404

These can be recognised as follows: This is limited to genuine on-demand bus services, which are operated as public transport with multiple pick-up and drop-off points and does not extend to private hire, taxi or other similar operations. 

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.
24-Aug-2022 - Applicability to UKNC V6 confirmed.

Operational energy and water use during Covid-19 lockdown - KBCN1425

As we continue to adapt to and assess the impacts of the COVID-19 pandemic, the BREEAM team is seeking to ensure that the data underpinning BREEAM in Use certification accurately reflect typical operational performance. We appreciate that the full or partial lockdown conditions related to the pandemic may have had a significant impact on the performance of the asset particularly the operational energy and water consumption. We trust our assessors to use their professional judgement to determine the extent that operational energy and water consumption has been impacted by the COVID-19 restrictions. They must ensure that submitted consumption data is representative of consumption under normal conditions. Clients should work with their assessors if they are unsure how they should proceed. Assets are likely to have been affected by many different local lockdown scenarios so one approach to reporting consumption data is unlikely to apply to all situations. For example, normal consumption data is likely to be sufficient for assets that have only had a minor changes to their operations (e.g. two weeks), if the rest of the 12 month period has been unaffected. For assets that been more significantly affected (e.g. several months of reduced occupancy), it is likely that energy and water consumption data will need to be taken from a period of time before local lockdown restrictions came into force. In this scenario, the following approach can be used:

The consumption reported must cover the 12 months prior to the restrictions coming into force.  The reported consumption would need to be validated against the year prior to the reporting period to provide assurance to the Assessor that it was in line with typical operations.  Additional evidence and verification will be required for submission. The following sections should help clarify how this should work:

Normal BREEAM requirements

Consumption Reporting:

Evidence requirements:

New requirements for this KBCN

Consumption Reporting:

Evidence requirements:

Example for a building submitting for certification in October 2020 subject to lockdown from March 2020:

Normal reporting period October 2019 – September 2020

Adjusted reporting period in line with this KBCN March 2019 – February 2020 Validation period: March 2018 – February 2019

This KBCN will remain in place but will be under review as we continue to monitor the impacts of COVID-19 and amend requirements as circumstances change.  We will keep assessor informed of BREEAM In-Use users and assessors via further service announcements and other communication channels.

Operational waste – No managing organisation or no tenants on-site - KBCN1584

Principle If the asset as a whole meets the operational waste criteria, all relevant credits can be awarded. No tenants Answers C and D can be awarded. No managing organisation Answers C and D can be awarded.
06-Apr-2023 - Updated to cover both situations described above.

Outdoor space – Parks and other public open spaces - KBCN1588

Public parks may meet the requirements for ‘Outdoor space’ even if smoking and vaping are unrestricted, as the impact on other visitors would be minimal. However, to ensure the above and that the overall aim is met, a compliant park must be over 2,500 m2 in size and be a ‘green space’ - an area of grass, trees, or other vegetation set apart for recreational or aesthetic purposes that is publicly owned and allows free access during the hours of daylight. Other similar areas that meet the above requirements, such as woodland or nature reserves, could also be considered as meeting the aim.

POL 01 – Assessment criterion 2 - KBCN1071

In order to respond to feedback, additional clarity has been provided in regards to the interpretation of assessment criterion 2.
Aim To reduce the risk of polluting natural watercourses through contaminated surface run-off and/or grease from kitchen facilities entering drainage systems Assessment criterion 2 Where it can be demonstrated that drainage or wash down facilities do not lead water from inside an underground or covered area to natural watercourses, such areas comply with the requirements by default.
BREEAM aims to be outcomes based, rather than prescribing a particular way to demonstrate compliance with the Aim. Therefore, criterion 2 is designed to allow flexibility for alternative systems (to light liquid separators) to demonstrate compliance. These alternative methods must either contain or prevent the pollution from leaving the site. By ensuring that the pollution does not enter the drainage system (i.e. leave the site), the building owner can be confident that the pollution is not entering the natural watercourse further down the drains (where there is the potential for issues outside the scope of the assessment).

Pre-payment systems - KBCN0293

Pre-payment systems do not meet the criterion for a cash machine and therefore cannot be used as an alternative. Cash machines provide additional services for building users, such as cash to use in other shops, the checking of bank balances, which a pre-payment system would not provide.

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.

Procedures and plans for cleaning the interior of the asset – Scope of the requirements - KBCN1649

The criteria only apply to areas or systems for which the landlord is responsible for the cleaning arrangements. However, the landlord must provide written guidance to tenants on 'procedures and plans for cleaning the interior of the asset' that aligns with relevant aspects of Criterion 2. It is not a requirement that the landlord monitors or enforces this, however, in order to meet the intent of the criteria as far as possible, evidence must be provided that such guidance has been provided to all tenants. Note: This guidance is not intended to change the criteria, but rather to clarify the overall intent. The applicability of the requirements to tenanted areas is not stated in the technical manual. Therefore, if it can be demonstrated that an assessment has based compliance on landlord's/common areas only prior to the date of publication of this guidance, this will be accepted. Updated guidance on the scope of these requirements will be included in the technical manual at the next opportunity.

Process Notes - KBCN0611

Process notes can be accessed by licensed assessors here. When a new process note has been released, you may be required to tick the box to confirm you have read the note to be able to access other documents in BREEAM Projects. To do this scroll to the bottom of the Process Note index page and tick the box and click next.  

Process water to offset potable water demand - KBCN0586

Where it is demonstrated that it is safe to do so, process water resulting from the building under assessment, can be considered for off-setting potable water demand from components that would otherwise be supplied using potable water, when in line with the criteria requirements for greywater systems. Process water resulting from the building under assessment can be considered as a form of greywater for the purposes of off-setting potable water demand.
21 Dec 2021 Additional wording added, requiring it to be demonstrated that process water is safe to use and KBCN applied to BIU standards.

Process: Registration date and applicable scheme manual issue - KBCN0708

Typically the scheme technical manual issue which is current when a project is registered should be used for the assessment. For example, if a BREEAM UK New Construction 2014 development was registered on 01/07/2016, the current issue of the scheme technical manual at that point would be issue 4.1, which was published on 11/03/2016 (the next issue 5.0 of the technical manual was published on 05/09/2016). However, it is permissible for the assessor to decide to use a later issue of the technical manual. The scheme technical manual version and issue used for the assessment should be clearly referenced within the assessment report. Note that in any case, the same technical manual version and issue should be used for the entire assessment. It is not acceptable to assess different credits based on different issues of the technical manual and it is not acceptable to change issues between submissions of the assessment.
26 09 17 Clarification added that the 'Issue' of the technical manual may not be changed between assessment submissions

Provision of fresh drinking water – Atmospheric water generators - KBCN1674

Atmospheric water generators can be used as an alternative to point-of-use water coolers connected to the mains water supply and drainage where it can be demonstrated that the water provision: In this situation the water supply does not need to be connected to the mains water supply and drainage. Suitable access provision in areas must still be demonstrated.

Proximity to amenities – Employee working hours - KBCN1653

The intent of Criterion 1 is that amenities must be open at times when they can benefit employees during typical opening hours for the asset type. The guidance on 'Employee working hours' in the Definitions section should, therefore, be disregarded. However, the assessor must be satisfied that, given the working hours of the assessed building and the opening hours of the amenity, this will benefit building users in line with the aim of the issue.

Purchasing BREEAM In-Use credits - KBCN1461

Online Payment – Credit/Debit card
The quickest route to obtaining BREEAM In-Use International credits for Measurement, Certification, Renewal and Mid-cycle certification, is to purchase these online and paying by credit/debit card. On successful completion of payment, the credits will be automatically allocated to the account who is logged in. BREEAM Projects To purchase a measurement credit, you will need to be logged in to the Client organisation account that will be making the registration. To purchase any certification credits, you will need to be logged in to the individual Assessor account who will be completing the assessment and submitting for QA and Certification. (Please remember that Assessor logins should never be shared with other individuals within the same company or externally KBCN0742) An email receipt of the payment is issued following the purchase online.
Cost Proposal and Invoice
If you are unable to purchase credits online using the card payment option, these can be processed via a cost proposal and invoice. You can select invoice on the 'Purchase credits' page within BREEAM Projects and complete the online request form. The request should be completed via the account who will be signing the cost proposal and receiving and paying the invoice. Further instructions and conditions are detailed within the request forms. Please be aware that the cost proposal and invoicing route is much slower than purchasing with a credit/debit card. The timescale for creating a cost proposal is 3-5 working days from the date the request form is submitted. The cost proposal is then sent to the contact on the cost proposal request and acceptance of the proposal and signature is required. The signed cost proposal is then returned to [email protected] and an invoice will be processed and issued to the customer. The timescale for processing a signed cost proposal is 3-5 working days before the invoice is issued. Once payment of the invoice is received and cleared within our accounts, the credits will be added to the accounts detailed in the original request. Credits will only be added following payment of the invoice. Assessors who will be signing the cost proposal and paying the invoice can submit the request form within their Assessor login. If you require the credits to be added urgently then the online payment route should be followed.

Recognising future performance - KBCN1538

BREEAM In-Use recognises an asset's operational performance at the time of certification. Compliance cannot be based on commitments to improve the performance of an asset in the future. Where changes to an asset are made during a 3-year certification cycle:

Renewal – Change in Asset Ownership and/or Management - KBCN1060

Before annual certificate renewal for Part 1 and 2 certificates, BRE Global requests confirmation from the client that no significant changes have been made to the asset or building management of the asset. Significant changes are those made to the asset or its management that result in a change in the overall rating of more than 5%. Change in ownership In a situation whereby the building owner changes whilst there is a valid BREEAM In-Use certificate, providing the new building owner sends BRE Global formal confirmation of ownership, and confirmation that they have not made any significant changes to the asset or building management of the asset since acquiring the asset, the certificate can be updated to reflect the new owner. Part 1 and 2 renewals can continue as per the standard process until the assessment is due for re-certification. Change in building/property manager In a situation whereby the building/property management changes whilst there is a valid BREEAM In-Use certificate, the process alters depending on the parts certified: For Part 1 certification, renewals can continue as per the standard process until the assessment is due-for re-certification. For Part 2 certification, the change in building/property management constitutes as a significant change.  A Part 2 assessment is based on the procedures and policies in place in relation to the operation of the asset and consequently if this organisation changes, the evidence in place from the initial assessment will no longer represent the current situation. For this reason, if the building/property management changes whilst there is a valid BREEAM In-Use Part 2 certificate, a full re-assessment including site visit is required. Please note: BREEAM In-Use certificates display all Parts certified on one certificate, for this reason, if one or more parts requires full re-assessment all Parts need to be re-submitted.

Residential eligibility criteria – clarification on occupancy levels - KBCN1523

Eligibility criteria 2 for Residential assets states: 2) Assets are required to be stabilized and have maintained a minimum level of occupancy. a) Stabilized assets are those are either at least 5 years old OR have achieved a 92% occupancy rate. AND b) The asset must have an average occupancy of at least 80% for one year prior to the start assessment. This threshold must be met for the year in which consumption data is supplied. AND c) The asset must be intended to be a Primary Residence of Occupants. Stabilized asset The 92% occupancy requirement can be achieved at any point during the asset's life. An asset is stabilized once this has been achieved, and 92% occupancy does not need to be maintained afterwards. General occupancy requirements Unlike Commercial assets, requirements for occupancy apply to both Part 1 and 2 assessments, and all Residential assets must be a year old before assessment. This is a policy decision to ensure that:

Resources inventory – Scope - KBCN1667

The inventory only needs to include resources that belong to the asset owner (or those which the asset owner or manger is responsible for maintaining or replacing). It does not need to included tenant-owned fittings and furnishings

Risk assessment – flooding is the only natural hazard - KBCN1552

Where: then Answer D ('the asset is in an area where no risks exist') is only available where the FRA shows zero or low flood risk from all sources of flooding. Assessing flood risk from rivers and seas only does not cover all risks.

Safe pedestrian routes: definition, measurement and verification - KBCN0238

Definition Safe pedestrian routes include pavements and safe crossing points, which may be controlled or, for example, be identified by tactile paving, a crossing island or a dropped kerb. An element of judgement may be required, in which case justification should be provided. Measurement Distances could be measured, for example, along a pavement, across a road at a safe crossing point and along the pavement on the other side.  The distance should not be measured diagonally across a road, following the most direct route. Evidence from Google Maps or other digital sources may be used to indicate routes and distances, provided that the scale is appropriate and clearly indicated. Verification The assessor’s site inspection is an important aspect of the assessment of this issue as it must confirm that all relevant information is current and should include photographs of any key areas. This may also help to identify safe crossing points or hazards which may not be apparent from a desktop study. For BREEAM NC and RFO assessments, Google Streetview may be acceptable as evidence to demonstrate safe pedestrian routes and the presence of key features or amenities at Design Stage only. Such information must be verified as above for Final Certification.
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

Scope of the criteria for lifts – Small service lifts (dumbwaiters) - KBCN1589

Small service lifts, of the type typically used to transport prepared food and crockery in restaurants (sometimes referred to as 'dumbwaiters'), fall outside the scope of this assessment issue.

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

Single and Multiple Certification options - KBCN1430

BIU Residential provides flexible options to allow as many residential buildings as possible to be rated and receive a certificate. These include: Apartments Houses   Benefits of the different certification options Multiple certificates – These show the performance of each residential unit. This can show the difference in scoring and rating between units, which could be used for sales purposes or as a way of targeting specific units for improvements. When opting for multiple certificates, the rating of the best performing units will not be limited by the performance in other units. Evidence must be collated from each building that is included in the assessment and where performance against the BREEAM requirements varies, the final score will be determined by the apartment or home with the lowest level of performance. Single Certificates – These show the performance of the apartment(s) or house(s) as a whole. While performance has to be documented for each dwelling, BREEAM Projects includes features which help streamline this process.   Which certification route is right for my Asset? When assessing just the Asset Performance in BREEAM In-Use Residential v6, the choice of certification option is up to the client. However, if Management Performance is included in the scope of assessment then the differing data requirements will determine which certification option the project needs to follow. These differing data requirements are driven by the energy consumption data available. The flow diagram below can be used as a guide to determine the appropriate certification route for your project, given the energy consumption data available. The scope of the energy data available will typically be more variable for an apartment building compared to houses. Houses tend to be individually metered, and therefore certification options are more open to client choice. Note: Any asset without compliant consumption data will not be able to achieve all of the credits within Management Performance (e.g. the Operational Energy Calculator and Water) If further assistance is required, please contact BRE at [email protected]
24 Apr 2024 - Paragraph headed 'Benefits of the different certification options' updated for clarity and KBCN applied to BREEAM In-Use USA Residential
20 July 2021 Amended for clarification and flow diagram updated

Single tenant - KBCN1640

Where the assessment area is only occupied by a single tenant, the issue is not filtered out. All relevant credits apply. The criteria is designed to recognise efforts between the asset owner and tenants to coordinate sustainability policies and resource monitoring. This principle is not affected by having a single tenant, even if they might act in the role of a managing occupier.

Sub-metering requirements for a Single Tenant - KBCN1201

Where the asset has a single tenant, or where it is owner occupied, this space must have both heating and cooling sub-metered to achieve maximum credits.

Sub-metering technologies – Compliance Principle - KBCN1561

Where it can be demonstrated that alternative sub-metering 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 metering standards or technologies are currently recognised as alternatives to pulsed output meters:

Submetering – no additional monitoring benefit - KBCN1637

Where the asset is targeting answer E (submetering) and: then the 6 credits for answer E are awarded by default.

Suitability of waste storage facilities - KBCN0186

In situations where direct vehicular access to the recyclable waste store is limited by logistics or if size is a problem, for example inner city locations, some flexibility to the application of the criteria is allowed. The assessor can use their judgement on whether the storage space is appropriately sized and if the distance and changes in level via lifts or steps are acceptable. Convenience, H&S issues and the volume and type of waste likely to be generated must be considered.  Where the assessor deems the arrangement to be satisfactory this would be acceptable. Typically ‘accessible’ is defined as being within 20m of a building entrance. In some circumstances site restrictions or tenancy arrangements could mean it is not possible for the facilities to be within 20m of a building entrance. If, in the opinion of the BREEAM assessor it is not feasible for the facilities to be within 20m of a building entrance, their judgement can be used to determine if the facility is deemed to be ‘accessible’ to the building occupants and for vehicle collection.

Systems serving <10% overall floor area - other affected issues - KBCN1542

The methodology for Ene 01 states: "Heating / cooling systems can be excluded from the calculation where the heated or cooled area equates to less than 10% of overall floor area." Systems which heat or cool < 10% overall floor area are not assessed in: Ene 01, 05 and 06 all feed into the asset energy calculator and so their inputs must be consistent. All other issues relating to these excluded systems are still assessed such as:

Table 29: Indoor ambient noise levels - KBCN1676

The indoor ambient noise level performance standards shown within the manual are currently incorrect and should read as below for the following listed functions:

Technical: Location of scheme technical documents - KBCN00022

All scheme technical manuals are available to view and download on the BREEAM website Always refer to the BREEAM website to make sure that you have access to the most up-to-date version of the relevant scheme technical manual.

Thermographic survey – Standards for test method - KBCN1578

The appropriate international standard for thermographic surveys is ISO 6781:1983 Thermal insulation – Qualitative detection of thermal irregularities in building envelopes – Infrared method. The following are acceptable alternative standards:

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.

Validity of consumption data - KBCN1304

In order to maintain the reliability of data entered into the BREEAM In-Use Online Platform, any consumption-related data submitted must have a reporting period start date which is no more than one year prior to the start of the assessment (creation of a measurement). For example, if the assessment was started on the 3rd of April 2018, the reporting period start date cannot be prior to 3rd of April 2017. A more recent period can always be entered, as long as the assessor can verify that the data is correct for the period entered.

Verification of consumption data - KBCN1019

Where consumption data has been entered into the BREEAM In-Use Part 2 Energy Calculator, the Assessor must provide evidence to support this and demonstrate its correlation to the assessed area. The consumption figures shall be supported by either corresponding utility bills or verified metered consumption data (or a combination of the two). This means that, for example, simply submitting a spreadsheet containing consumption figures is not compliant, clear demonstration that this has been verified is required. It is also common that available utility bills may not coincide with the assessed area for an asset, this means that further evidence is required to demonstrate the actual consumption for the assessed area. Since there are many different methods in which energy data can be monitored (e.g. manual meter readings, Energy Management Systems etc.), the format used when submitting metered consumption data often varies between assessments. This often leads to confusion for Assessors on whether particular evidence meets the requirements. For these reasons, further clarity has been provided outlining how compliance can be met when neither appropriate utility bills nor verified metered consumption data (undertaken by the Assessor) are available for the assessed area. In these instances, it is possible to strengthen this existing evidence with a verification statement. Please see the following guidance below: BREEAM In-Use Part 2 Energy (Traditional method)
  1. Clear description of how the consumption data was obtained for each question, e.g. manual reading, automatic reading from a BMS, energy bills, etc.;
  2. Clear description of any calculations carried out to the data before it is entered into the BREEAM In-Use online platform, e.g. energy use determined by subtracting sub-metered data from main meter readings;
  3. Clear reporting of the period the consumption data relates to, i.e. start date and end-date for each consumption figure;
  4. Clear confirmation that the data covers the assessed area only, and is based on metered data, rather than estimations or apportionment.
  5. Such confirmation will be provided and signed from either someone internal to the organisation or the Assessor themselves (see Note below).
BREEAM In-Use Part 2 Energy (Energy Allocation method) This method is required where the asset does not have consumption data which covers the assessment area only. The asset will need to use the BREEAM In-Use International 2015 Energy Allocation Calculator when completing the Part 2 Energy Category. This can be accessed through the BREEAM In-Use Assessor extranet, or by emailing [email protected]. Within this tool there is full guidance explaining the requirements for this method.
  1. Clear description of how the consumption data was obtained for each row (meter) inserted into the BREEAM In-Use Energy Allocation Calculator Tool, e.g. manual reading, automatic reading from a BMS, energy bills, etc.;
  2. Clear description of any calculation carried out before the data was entered into the BREEAM In-Use Energy Allocation Calculator Tool, e.g. energy use determined by subtracting sub-metered data from main meter readings;
  3. Clear confirmation that the figures within the ‘Total annual consumption (kWh)’ entry within the ‘Consumption Data’ tab (of the Energy Allocation tool) relates to the area outlined in the respective ‘Total area metered (m²)’ cell. This entry must be based on metered data, rather than estimations or apportionment.
  4. Confirmation that the ‘Total annual consumption (kWh)’ entry within the ‘Consumption Data’ tab (of the Energy Allocation Calculator Tool) relates to the associated dates in that row, i.e. start date and end-date;
  5. Such confirmation will be provided and signed from either someone internal to the organisation or the Assessor themselves (see Note below).
Note: Where confirmation is undertaken by someone other than the Assessor, the Assessor must be content that the information is correct, and that the individual has a good understanding of metering systems and of the metering strategy of the particular asset being assessed. This should be clearly outlined within the Assessor comments.
09/10/2019 Change to incorporate introduction of Part 2 Energy Allocation Calculator guidance.

View out – alternative method of compliance for fixed workstations - KBCN1484

In relevant spaces that include fixed workstations* (such as a built-in cash registers or reception desks) an alternative method can be used. This is based on the number of compliant workstations. For instance, where the requirement is for 95% of the relevant area to comply, 95% of the fixed workstations must have a compliant view out, rounded up to the nearest workstation.   Example A retail assessment has 35 built-in cash registers, 95% of which must comply with the view out criteria. 35 x 0.95 = 33.25, rounded up to 34. The requirement is met for this area if 34 registers comply with the criteria.   Where an asset includes a mix of relevant areas; both fixed workstations and flexible areas, compliance for the whole assessment must be demonstrated for all areas, as appropriate, based on either area or number.   *freestanding desks and other items of moveable furniture cannot be considered as fixed workstations, regardless of whether their locations are pre-determined.

View out – Calculating the glazing to wall ratio - KBCN1506

This should be calculated based on the glazed area of window, expressed as a percentage of the area of the external wall in which the window sits. Where the ceiling height of the room is unusually high, relative to the window height, the wall area can be calculated based on a standard ceiling height for the building type.

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 – 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 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.
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.

Volume Approach – Site visit requirements - KBCN1644

This guidance applies only to assessments for clients who have entered into a formal agreement with BRE to enter the Volume Approach. The aim of the Volume Approach is to assist clients with large numbers of assets, and their assessors, to conduct assessments in a robust manner, whilst also taking a practical view. From the clients’ assets that have entered the process, BRE will identify which assets may undertake a virtual site visit. The assets and their assessments cannot be new to the BREEAM In-Use process and must be identified and communicated to BRE prior to undertaking the site visits. The requirements of the virtual site visits are as follows: Gathering evidence for site assessments: In cases where BRE has identified an asset can undergo a virtual site visit, the assessor is not required to personally visit or gain access to the site, they can use the following methods:
  1. Appoint a suitable individual, for example a main contractor or asset manager, to undertake a formal site assessment on their behalf. The appointed individual would be expected to provide a robust account to the assessor of evidence in place of their own site assessment report. We would expect the report to contain photographs and/or virtual tour stills from the building and be signed off by both the appointed individual and assessor.
  2. For assessment issues relating to external spaces beyond the site, we will accept stills/images from Google Street View (or equivalent), provided it is demonstrated that such evidence is current.
  3. Desk-based evidence will be accepted where evidence demonstrates that the criteria are being met as far as possible without a site assessment.
It is important to note that where one of the above 3 options has been selected, the assessor is responsible for assessing the evidence and for the awarding of any credits. Timing of workshops, testing and other subsidiary evidence submissions: Given the widespread availability of remote communication technologies, it is generally possible to undertake the majority of activities relating to our assessment criteria without the need for face-to-face contact or site assessments. With respect to workshops, the key consideration is that they take place at a time when they have a meaningful impact and achieve the aim of the criteria. With respect to subsidiary, third party assessments such as ecological site inspections or audits, desktop surveys based on available information (e.g. planning surveys, agent’s reports, photographs, Google Earth), can be used as an alternative provided there is enough material for a confident recommendation and/or outcome to be achieved.    

Washer dryers - KBCN0699

Where a washer dryer is specified, the water consumption figure for the wash and dry cycle should be used. The drying cycle of a washer dryer is taken into account because it usually uses water during this drying process (e.g. for cooling during the drying cycle) and in some cases, this water usage can be significant.
18-Nov-2022 - Updated to apply to BREEAM In-Use Version 6

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).

Waste streams – clarification - KBCN1526

Scope The focus of the criteria is on recyclable materials only. Any facilities / spaces for managing recyclable materials must be in addition to spaces / facilities for managing general waste. Definition “Waste streams are flows of specific waste, from its source through to recovery, recycling or disposal. Waste streams can be divided into two broad types: Source For BREEAM, a waste stream is a material / product with its own recycling process. This means each stream needs to be separated from other materials before it can be effectively processed into new materials / products. This separation can happen in the asset, or (in the case of co-mingled waste) after collection from the asset. Residential waste streams In most cases, this is defined by how it will be how be sorted and collected by municipal waste authorities. Where no local guidance exists, the list below may be used as a guide. Recyclable waste streams (answer option C in BREEAM In-Use Residential V6): Compostable / recyclable waste streams (answer option D in BREEAM In-Use Residential V6): Commercial waste streams Commercial assets will generate specialised waste streams specific to the asset's function. These are typically: In these cases, waste streams such as metals, plastics and paper / cardboard may be sub-divided into specialised waste streams where they meet the above. Example scenarios [accordion] [accordion_block title="Scope"] A vehicle repair workshop generates the following waste streams: The engine oils and general waste cannot be re-processed into other usable materials. Only 3 recyclable waste streams can be considered for BREEAM assessment. [/accordion_block] [accordion_block title="Residential"] The local authority collects co-mingled waste for the asset. This waste mixes together: This co-mingled waste can be counted as 3 waste streams. [/accordion_block] [accordion_block title="Commercial"] A supermarket consistently generates large quantities of cardboard packaging. This cardboard forms a significant portion of recycable waste generation. It is baled up and collected separately by a specialised waste contractor. In this case, cardboard waste can be considered a separate waste stream from paper. [/accordion_block] [/accordion]
18-Jan-2024 - Clarified list of residential waste streams (separated compostable waste streams and added relevant answer options).

Water consumption reporting – Link to Man 04 - KBCN1611

The link to meeting compliance with Man 04, outlined in Wat 13 Criterion 1 is incorrect and should be disregarded. Answer option D in Man 04 includes targets for Energy, Water and Waste. Whereas the intent of Wat 13 relates to targets for Water only. This will be updated in the next reissue of the technical manual.

Water strategy – Replacement and Schedule - KBCN1673

Replacement The intent is that there is a programme in place which identifies any planned refurbishments and confirms that, where relevant, the works will include upgrading high water-consuming fittings and appliances with low water-consuming equivalents. This does not require the systematic replacement of all fittings and appliances. However, it must also include a commitment to upgrading the efficiency of existing fittings and appliances when they reach the end of their service life. Schedule This may include specific fittings and appliances with low water consumption, or it can be based on a performance specification that these must meet, e.g. the flow rate or efficiency rating.

Watercourse pollution from indoor parking - KBCN0545

If the design team can demonstrate that there will be absolutely no run-off from the indoor parking then the intent of the credit will be met. However, such proof would also have to demonstrate that no hydrocarbon spillage from vehicles found its way into the watercourse/sewer. It is likely that there would be water ingress from outside or that internal parking areas would have drains fitted and be cleaned regularly. In such conditions, the criteria are still applicable. The intent of this criteria is to ensure no hydrocarbons run off to any watercourse.

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 – whiteboards and display screens - KBCN1433

Whiteboards and display screens in dedicated teaching or presentation spaces require separate zoning and control for lighting, as specified in the criteria. Lighting around whiteboards and display screens which are typically found in general office areas, meeting rooms, or in other generic spaces do not require separate zoning and control to meet the criteria. In such cases, the assessor should provide justification. Whiteboards and display screens in dedicated teaching / presentation spaces are likely to be used frequently, and require appropriate zoning and control. An increasing number of offices and meeting rooms now include display screens - however separate zoning and control may not be appropriate.
Information correct as of 15thJuly 2024. Please see for the latest compliance information.