UKNC: Residential (HQM) /

UKNC: Residential V6.1

Information correct as of 29thMarch 2026. Please see kb.breeam.com for the latest compliance information.

Alternative certification schemes LZCTs options - KBCN1314

Where Microgeneration Certification Scheme (MCS) or CHPQA certification is not available, the design team must investigate the availability of alternative accreditation schemes in line with the Directives listed in the LZCT definition of the Decentralised Energy issue, or an equivalent country or regional directive or standard. Where an alternative accreditation scheme exists it should be used for the purpose of verifying compliance of the specified LZCT. If no alternative accreditation scheme exists, the design team must demonstrate they have investigated the competence of the installer selected to install the LZCT and are confident that they have the skill and competence to install the technology appropriately. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Appropriately qualified person – alternative requirements to membership of a professional body - KBCN1802

Where the definition of an Appropriately qualified person has not been met in relation to membership of a relevant professional body, the alternative requirements have been reviewed and can now be demonstrated as follows: Criteria requirements: Alternatively, where they do not hold any membership of a professional body, the individual can still be considered appropriate where the following is met: Evidence requirements:  

Assessing ecology issues using a mix of routes - KBCN1306

Where Route 1 is pursued initially and it is subsequently decided that Route 2 should be followed, the Suitably Qualified Ecologist appointed should review all evidence available for the issues already assessed to confirm the actions taken were appropriate. Note: Route 1 and Route 2 are referred to as the 'Foundation' and 'Comprehensive' routes in HQM and UK NCR.  
30-Oct-2025 - Title updated. Applicable to HQM V6 and UKNCR V6.1

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

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

Broken chain of custody for legally harvested timber - KBCN1321

The Government website referred to in the ‘Legally harvested and traded timber’ definition in the Responsible sourcing issue, provides the necessary guidance for demonstrating compliance with the prerequisite for this issue, which follows the Central Point of Expertise on Timber (CPET) report on the UK Government Timber Procurement Policy. The ‘Timber Procurement Advice Note (TPAN)’ provides a checklist (Annex E) for evidence of certified timber (category A evidence). You can find this here: https://www.gov.uk/government/publications/timber-procurement-advice-note-tpan-comply-with-tpp Annex F of this document gives further guidance if the supplier isn’t directly certified and there is a broken chain of custody. It notes that ‘As soon as ownership of products is taken by a non-CoC-certificate holder, the products cease to be 'certified'. However, if the evidence is credible, you can make a claim of legal or sustainably sourced products. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Building assessed as part of a larger development - KBCN1313

Where the building under assessment forms part of a larger development and either a new or existing low or zero Carbon technology (LZCT) installation is provided for the whole site, then the amount of LZCT energy generation counted for in this issue, and subsequent CO2 emissions saved, should be proportional to the building’s energy consumption compared to the total energy consumption for the site. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Changes to CCS – January 2022 - KBCN1500

UKNC2011, UKNC2014, RFO2014 and Domestic Refurbishment 2014 schemes: In response to the 2022 changes to the structure and scoring in the CCS, the adjusted points for credits are as follows for each of the three new sections (Community, Environment, and Workforce): One credit requires a minimum of 9 points per section and 27 overall. Two credits require a minimum of 11 points per section and 35 overall. Exemplary credit requires a minimum of 13 points per section and 39 overall. UKNC2018, UKNCV6, HQM ONE and HQM V6 schemes and UKNCR V6.1: No changes have been made to the criteria or the requirement to demonstrate compliance with items g, p and q for the exemplary credit. GN33 has been updated to demonstrate the mapping of the updated CCS to these schemes, see KBCN1215. For assessments not following CSS, the criteria remain unchanged. More information on the changes to the CCS scheme are outlined on the CCS website. 
29-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
12-Apr-2023 - Updated to clarify the applicability of the new guidance.
28-Feb-2023 - Note updated to refer to the updated version of GN33.
29-Apr-2022 - Note added to clarify that this information supersedes the requirements in the technical manuals.
25-Mar-2022 - Updated to provide the new scoring requirements for BREEAM standards.

Clarification of ‘Embodied carbon benchmark comparison’ - KBCN1819

The embodied carbon benchmark comparison must always be based on the latest appropriate LCA stage that corresponds to the BREEAM assessment stage being pursued. The purpose of the benchmark comparison is to assess outcome-based embodied carbon performance, using data that is representative of the building at the relevant assessment stage.

Assessment stage requirements

Interim (Design Stage) BREEAM assessments

Final Post-Construction Stage (PCS) BREEAM assessments

If a PCS LCA is not undertaken, benchmark comparison credits cannot be awarded at final assessment, regardless of whether a technical design LCA was previously completed. This aligns with wider industry frameworks (e.g. RICS WLCA v2 and the UK Net Zero Carbon Buildings Standard), which anchor performance claims to as-built outcomes.

Clarification of ‘rural location’ in England and Wales - KBCN1824

A rural location is defined as any settlement with a resident population of fewer than 10,000 people, including rural towns, villages, hamlets and dispersed dwellings, as set out in the Government’s Rural‑Urban Classification (RUC).
To confirm whether a development is located in a rural location, enter the site postcode into: Web map for Rural Urban Classification (RUC) of Local Authority District Areas (LADs), England and Wales, 2024 | Open Geography Portal Only locations classified as rural within the RUC system are eligible. This includes areas designated as Majority Rural or Intermediate Rural.  

Classifying lines of trees not part of a continuous hedge - KBCN1333

Lines of trees (where not part of a continuous hedge) should be considered as an area-based habitat, rather than a linear habitat. Please see the ‘Individual Trees and Lines of Trees’ section in Guidance Note 36 for details on calculating this. Appendix A of GN36 version 0.0 implies the opposite, however this is an error and will be corrected in future updates. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Commissioning – Role of Specialist commissioning manager - KBCN0604

The specialist commissioning manager for a complex system must be a specialist contractor and not a general sub-contractor. They must be on hand to independently verify the work carried out by whoever installs the system. In principle, it is possible for the specialist commissioning manager to be from the same organisation as the main contractor provided any conflicts of interest have been declared and records show how they have been managed to provide confidence that commissioning will be carried out appropriately. The separate roles of the main contractor and specialist commissioning manager are so that the installation and commissioning are carried out independently by different parties. 
29-Oct-2025 - Applicable to all HQM versions and UKNCR V6.1

Commissioning certificates – evidence - KBCN1311

Certificates demonstrating compliance with any relevant standards are acceptable for the commissioning criteria, where they cover all the systems referred to in the criteria (hot water, heating, ventilation etc.) and any relevant commissioning best practice guidance has been complied with. The ‘commissioning best practice guidance’ outlines how to carry out commissioning for various different systems that may be present. Some of the guidance is more appropriate for complex systems and often won’t be relevant. The person or persons carrying out the commissioning activities is expected to be familiar enough with the standards referenced, to determine the ones that are relevant to the systems they are commissioning. 
29-Oct-2025 - Applicable to all HQM versions and UKNCR V6.1

Communal refuse chutes – Apartments over five storeys - KBCN1108

For apartments over five storeys where communal chutes are being used, these should be compliant with BS 1703:2005 Refuse chutes and hoppers – waste should be carried no more than 30m from the home entrance (excluding vertical distance). 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Communal ventilation system - KBCN1388

A communal ventilation system is acceptable as long as it meets the requirements in the HQM manual. In terms of maintenance, if it is not possible for the home occupants to carry out system maintenance themselves due to the type of system installed we would need a statement from the professional designing the system stating this. Instead, any specified ventilation system requiring maintenance must be designed to allow building services engineers to easily complete the work in a safe manner in accordance with manufacturer’s instructions and any other safety regulations, to prevent systems becoming redundant or being unable to function to their designed intention. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Complex Systems - KBCN1617

These include, but are not limited to all communal systems with a centralised plant, systems that provide combined services (e.g. HVAC systems) and complex passive ventilation systems. 
29-Oct-2025 - Applicable to all HQM versions and UKNCR V6.1

Compliant test body – alternative compliance route using a Suitably Qualified Acoustician - KBCN1412

Where acoustic testing and measurement has not been performed by an organisation or individual that meets the definition of a compliant test body, compliance with this requirement can still be demonstrated where a Suitably Qualified Acoustician has reviewed the relevant test report(s). The test report must: a) Be countersigned or authorised by a Suitably Qualified Acoustician b) Include a clear statement that the acoustic testing and measurements have been carried out in accordance with the BREEAM or HQM testing requirements AND c) Include evidence that the verifier meets the definition for a Suitably Qualified Acoustician within the relevant BREEAM or HQM technical manual 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Connection during handover not possible - KBCN1319

Where it is not possible for occupants to have access to broadband, telecommunications, TV or data services, when moving in, due to unavoidable delays, temporary measures need to be taken to ensure occupants are given temporary access until full connection is available (e.g. via dongles). This needs to be agreed between the developer, network infrastructure provider and internet service provider where applicable. 
29-Oct-2025 - Applicable to all HQM versions and UKNCR V6.1

Construction Energy Use & Construction Water Use – Weekly reporting - KBCN1387

03 Detailed monitoring and reporting Crit 3 Conduct the monitoring and reporting of data in crit 2 on a weekly basis. The reason to ask for data recorded on a weekly basis, is to collect much more granular data which can be potentially overlaid with the project plan. By undertaking this it would enable the construction team to better understand the most energy intensive processes which could be targeted with energy efficiency measures. 
29-Oct-2025 - Applicable to all HQM versions and UKNCR V6.1

Construction inspections and record evidence for homes - KBCN1284

For design stage, something like a clear policy and commitment should be acceptable as long as it shows that it will cover the scope of checks in the inspections and completion issue and any other relevant criteria. For post-construction stage, it is appreciated that although evidence should be thorough, too much detail may not always be helpful or feasible. Evidence does not need to show every detailed check made but it does need to show that these checks have been made for every assessed home. The purpose of the minimum requirements for 'construction inspections' and 'construction record' is to ensure consumers can trust HQM-certified homes have been built and finished to a high standard, which is essential to the value of HQM. With this in mind, a sample should be acceptable to show the detailed checks carried out for the construction record criteria as long as evidence also shows that the same checks are being made for every single home being assessed (this could be in a more summarised format). In particular, occupants need to have access to the full construction records for their own particular home if they want it and evidence needs to show that all homes have been checked to the extent required for the construction inspections minimum requirement (see relevant criteria in the manual). In general, we try to make evidence requirements flexible and not overly prescriptive wherever possible, particularly for issues with new content like this one. This is to avoid the unnecessary generation of evidence for the sole purpose of HQM and to recognise existing evidence sources that are available, which can be provided in various formats. As the assessor, you need to be satisfied that the evidence supplied sufficiently demonstrates that the aims of these criteria are being met. The format of evidence is flexible as long as it clearly demonstrates the outcome for each criterion is being met in practice.  
29-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Contractor not yet appointed at the design stage – Site waste management - KBCN000002

Where the contractor has not been engaged at the design stage certification, it is acceptable to award the credits based on a commitment. This commitment must be from a suitable member of the design team, and must detail the targets and criteria which must be met. Evidence must also confirm that the details in the commitment will form part of the contractual requirements. Note: This does not apply to the requirement for a pre-demolition/pre-refurbishment audit, which must be undertaken at Concept Design Stage. 
30-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1
12 Jul 2022 - Note added to clarify the scope of this guidance
 

Decorative gas/ethanol fires - KBCN1301

Although fires may be decorative, if they are permanent features of the home that burn fuel to produce heat, they will have an impact on local air quality. They should be assessed in the Impact on Local Air Quality issue. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

DEFRA Small Sites Metric (SSM) - KBCN1614

The Small Sites Metric (SSM), the simplified version of the DEFRA Biodiversity Metric 4.0, cannot be used as a means of assessing Biodiversity Net Gain in BREEAM. We will consider accounting for the SSM in future versions of all BREEAM Schemes. The calculation methodology in GN36 is based on the full version of the DEFRA Biodiversity Metric.  
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Design stage evidence – Responsible sourcing of construction products - KBCN0831

At design stage, a letter of commitment from the design team confirming that the products shall be procured from suppliers capable of supplying products covered by the required responsible sourcing certification scheme is acceptable. The letter must confirm the responsible sourcing certification schemes of the proposed products. 
30-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1
 

District heating connected after post-construction stage - KBCN1312

For HQM, at design stage, it may be acceptable to assume a network will be implemented and used by the assessed home, at completion if appropriate design-stage evidence demonstrates this, even if the system is not implemented at the time of the design-stage assessment. At post-construction, evidence would need to be revised and re-submitted based on what has happened in practice. In most cases the district heating network would need to have been installed and connected to, in order to use this system as part of the home’s energy calculations for the Energy and Cost issue, and to demonstrate installation of LZCTs in the Decentralised Energy issue. However, there is a possibility that time-frames could be flexible depending on the specific scenario being considered, which are judged on a case by case basis. To be considered, a technical query needs to be raised, with detailed information about the project including: location, size, whether it’s mixed-use or a phased development, type of network being connected to, time-frames of the connection and justifications for these, and the assurances that will be in place to ensure this happens in-practice. If it is not possible to provide this information during the design stage, this can be raised later but please be aware that there is a risk that credits achieved at design stage may be lost at post-construction stage, if the network is not connected to as planned. If this does happen, the ‘infrastructure’ criteria in the Decentralised energy issue may still be applicable if adequate infrastructure is installed by post-construction stage, which can be used to connect the home to LZCTs in the future, in line with any relevant criteria (e.g. feasibility study, CN4 etc.). In terms of how this works for BREEAM, it is possible that connection after post-construction could be acceptable, if the development is part of a larger or mixed-use project where the centralised services provision only becomes viable at a later phase and there are robust, legally enforceable routes to ensuring delivery of them to a set timeline. Evidence would need to be reviewed at post-construction stage on a case by case basis, in line with KBCN0267. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1 Issue 5.2
 

Early product procurement policy - KBCN1309

A documented product procurement policy and procedure needs to be in place by RIBA stage 2, which sets out the requirements for all suppliers and trades to adhere to in relation to responsible sourcing of products. However, this policy and procedure can be fairly high-level at RIBA stage 2, as long as all other criteria are met, including dissemination and the encouragement of products that have responsible sourcing certification over products that don’t. At this early stage, the policy is likely to contain overarching principles and policies that later feed into a more detailed plan or strategy, further into the design stage. BS8903:2010 and BS8900-1:2013, provide guidance on what is considered good practice. Our experience with BREEAM has shown that considering the potential for responsibly sourced products early on makes procurement of these products more achievable, which in turn makes the associated credits for this more likely to achieve. This principal extends to the other issues in the Materials category as well. 
30-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1

Ecological enhancement implementation time-frames - KBCN1196

At the Post Construction Assessment stage of large or phased developments, for example, some ecological enhancements may not have been completed. This may include features which are to be added at a later date in the appropriate planting season. In such cases, it is acceptable to provide evidence from the client or principal contractor confirming that the enhancements will be completed within an appropriate period, advised by the SQE. 
04-Nov-2025 – Applicable to BREEAM NOR NC V6
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

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

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

Emissions from products – scope of assessment - KBCN0212

General This issue covers any product installed or applied inside the inner surface of the building’s infiltration, vapour or waterproof membrane. Where this membrane is not present, it applies to the inside of the building envelope’s interior-facing thermal insulation layer. Only products that are installed or applied in parts of the building where their emissions are likely to affect indoor air quality need to be assessed. Paints and coatings Any decorative paints and varnishes that occupants are exposed to should be assessed. This is likely to include paints and coatings applied to walls, ceilings, floors, doors, etc. Whole products A finish applied to a product in the factory is assessed as a whole product, and not separately as a paint or coating. For instance, a wood panel has a finish applied in the factory. The whole panel, including all the elements that make up that panel, would need to comply with the requirements set for wood panel products in this issue. The finished product as a whole must meet the performance requirements / emission limits set in the manual. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
11-Oct-2022 - Title amended for clarity and consistency. Content merged with KBCN0871.
10-Oct-2022 - Wording simplified. Scheme applicability updated.
16-Jun-2017 - Title and general principle amended to extend the applicability of the KBCN to all finishes. Paints specified for specialist applications covered in KBCN0872.
 

Emissions from products – specialist paints and coatings - KBCN0872

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

Erratum-Projected climate change environment-Emissions scenario missing from manual - KBCN1742

The CIBSE future climate weather files should also use the following emission scenarios. For naturally ventilated buildings - Medium. For mechanically ventilated or mixed mode buildings - High.

Evidence for ’04 Detailed monitoring and reporting’ at design stage - KBCN1232

The evidence requirements associated with ‘04 Detailed monitoring and reporting’ for Design Stage in both the 'Construction Water and Energy Use' are incorrectly formatted and should appear in the Post-Construction Stage column. For design stage evidence requirements, please refer to KBCN1231 'Design Stage evidence requirements when a contractor has not been appointed' 
29-Oct-2025 - Applicable to all HQM versions and UKNCR V6.1

Evidence requirements – responsible sourcing of materials at post-construction - KBCN1599

Whilst the UK BREEAM manuals are less prescriptive in the evidential requirements to allow flexibility, to ensure consistency across the schemes, it is expected that robust evidence should be provided to verify the source of any certified materials and how the assessor has confirmed the products and manufacturers used. Evidence supplied at post construction stage must reflect the completed building and confirm the responsibly sourced materials that have been procured and installed on the project. Supporting documentation is required to validate letters of confirmation or schedules of materials. Evidence provided could include proof of purchase, for example, invoices, delivery tickets, purchase orders or correspondence from suppliers. This may be an example for each material sourced, rather than every delivery ticket for instance.  Alternatively, evidence of the use of the responsibly sourced materials may include as-built drawings, O&M documentation or site photographs. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Flexible handover visit - KBCN1322

It is acceptable for an appropriate company representative to present handover meetings to groups of occupants per dwelling type. This can include demonstrations and video presentations, for example, however it must also provide the opportunity for occupants to ask questions. 
29-Oct-2025 - Re-worded for clarity and applicability to all HQM versions and UKNCR V6.1 confirmed.

Flood Risk Assessment older than five years - KBCN1744

This sentence appears in the definition of 'Flood Risk Assessment': Where more than five years have passed since the FRA was carried out, evidence would be required to demonstrate that the basis of the FRA has not changed in that time. The requirement for evidence that the basis of the FRA has not changed where more than five years have passed is applicable only at Design Stage. It is not required at Post Construction Stage where a compliant FRA was undertaken at Design Stage and the development was carried out in accordance with that design.

FSC and PEFC Mixed Sources certified timber - KBCN00091

Products labelled: Meet the BREEAM responsible sourcing requirements. This means any such products: Products carrying the FSC Mix label contain at least 70% FSC certified and recycled material. These products may contain a small proportion of FSC Controlled Wood (KBCN00054). However for BREEAM compliance, the FSC Mix label is sufficient to meet our requirements. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
14-Mar-2024 - Wording clarified and expanded. Relevant prerequisites and requirements clarified. Scheme applicability updated.

FSC Controlled Wood - KBCN00054

The FSC Controlled Wood label minimises the risk that wood comes from illegal or controversial sources, however it does not eliminate this risk. Therefore, products which are: Do not meet the BREEAM definition of responsibly sourced. Where FSC Mix labelled products contain FSC Controlled Wood, see KBCN00091. This means that any such products: 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
14-Mar-2024 - Wording clarified and expanded. Relevant prerequisites and requirements clarified. Scheme applicability updated.

Gardens finished - KBCN1328

The ‘finished and habitable’ requirement within the 'visual defects inspection' criteria is focused on ensuring occupants can move into a new home that is accessible, functional, comfortable and safe. As a minimum, any hard landscaping needed to access the home is in place.Soft landscaping may not be complete for the purposes of this criterion as long as the garden areas are capable of planting being done after occupants move in. For example, gardens are clear of building debris and adequate topsoil is present for planting. 
29-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1

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

Latest version: v3.7, May 2023 BREEAM awards credits for responsibly sourcing construction products (typically under the Mat 03 issue) to encourage responsible product specification and procurement in construction. To achieve these credits, applicable specified products (as listed in the relevant technical manual) must be covered by an Environmental Management System (EMS) or a responsible sourcing certification scheme (RSCS) recognised by BREEAM. Guidance Note 18 lists the responsible sourcing certifications schemes recognised by BREEAM along with the relevant summary scores to be used in BREEAM assessments. Download Guidance Note 18 Download Guidance Note 18 v2.0 (licensed assessors only - optional for projects registered prior to release of v3.0 in September 2016) View all Guidance Notes on BREEAM Projects (licensed assessors only) 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

GN22 Recognised schemes for emissions from construction products - KBCN0719

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

GN24 Demonstrating compliance with Responsible Sourcing requirements in BREEAM - KBCN0721

Latest version: v1.1, May 2022 Guidance Note 24 provides additional guidance to assessors and specifiers on demonstrating compliance with the criteria set out in Mat 03. It should be read in conjunction with the Technical Manual for the relevant assessment scheme. It covers: Download Guidance Note 24 (licensed assessors only) View all Guidance Notes (licensed assessors only) 
30-Oct-2025 - Title updated. Applicable to HQM V6 and UKNCR V6.1

GN33 – Evidence requirement clarification - KBCN1157

In Guidance Note 33 (GN33), BREEAM recognised responsible construction schemes are mapped against the 'Responsible construction management' criteria within the manual, in order to determine the degree of comparability. Table 2 in GN33 provides a mapping of the recognised schemes, the relevant scores and the BREEAM items ‘a-s’ which are achieved. Where items in the table have been 'ticked', the only evidence that is required is confirmation of the formal certification under the relevant scheme, in addition to the evaluation report. No further information is required to achieve these items. Where an item in the table has been 'crossed', this means that either, the responsible construction scheme does not demonstrate compliance with that BREEAM item, or that the score achieved is not high enough to confirm compliance with the item. Where a cross exists against an item, additional evidence will be required to demonstrate compliance with those items, (where credits are sought).   
29-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
28-Feb-2023 - Updated link for Guidance Note 33

Green roofs – habitat distinctiveness - KBCN1332

In GN36 Appendix C - Habitat Type Classification and Reference Index the distinctiveness types which have been set for Extensive and Intensive green roofs in part relate to ‘likely’ planting taking into consideration possible options for these roofs. Taking into consideration evolving and changing practices around green roofs (and generally relating to habitat classification) notes A&B in GN36 Appendix C provide the ecologist with the flexibility to use their professional judgement to use alternative information / classification as long as this is justified. As such, whilst the distinctiveness levels set in Appendix C should be used in normal circumstances, where the ecologist can provide evidence/justification for doing so, they can specify the distinctiveness of the green roof based specifically on the planting that has implemented on that project. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Habitat classification – Assigning a different classification to that specified in GN36 - KBCN1515

Where the SQE provides written confirmation and robust justification that a particular feature should be assigned to a different habitat classification, the assessor can consider this as valid for their assessment. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Heat pumps - KBCN1316

Heat pumps can only be considered as a renewable technology when used in heating mode. Refer to Annex VII of Directive 2009/28/EC for more detail on accounting for energy from heat pumps. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Heated common areas for homes - KBCN1390

A BRUKL is only required for the HQM calculation if it is already required by building control. If heated common areas are not applicable to the assessment but the assessment tool is requesting inputs for them, please check your inputs for shared common areas in the 'Home details' and 'Energy and cost' parts of the tool. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Heating zones - KBCN1318

For Multiple Dwelling Units (MDUs) or homes consisting of two main rooms or less, heating zones for the whole unit, rather than individual rooms, are acceptable, provided occupants have control of their own heating zones. 
29-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1

Home information – certificate after occupant moves in - KBCN1281

The HQM scorecard and certificate are required as part of home information when occupants have moved in to make them aware of HQM and how it adds value for them and their home. If the HQM certificate will not be issued when occupants are due to move in, confirmation should be included as part of the Home information, which says that HQM certification has been targeted and the certificate will be issued separately, subject to successful approval by the certification body, BRE Global. The information should also cover general information about HQM including a link to the website and who they should contact (e.g. the home builder) for information or updates on this. If a design stage certificate has been issued for the home, this should also be provided and made clear that this is a provisional rating. 
29-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

HQM evolves to BREEAM UK New Construction: Residential - KBCN1727

The benefits 
BREEAM UK New Construction: Residential (UKNCR) V6.1 supersedes HQM V6 as the current BREEAM assessment for new homes in the UK.   UKNCR retains the core technical robustness and quality focus of HQM while enhancing its alignment with the wider BREEAM framework. This update ensures that residential projects benefit from an integrated, science-based approach to sustainability that meets the evolving demands of the housing sector.   This brings several key improvements: 
The certificate 
UKNCR certificate’s format and branding will align with other BREEAM New Construction certificates.   Each home will receive a certificate indicating:   The percentage scores required to achieve each rating level remain the same as in HQM V6.   For further information, please see our FAQs. 
The technical manual and assessment tools 
UKNCR will have a new look across its:  However, the following will remain consistent with HQM V6:   For access to all UKNCR V6.1 resources, please refer to BREEAM Projects. 

Insulation – Responsible sourcing - KBCN0907

Insulation is within the scope of the responsible sourcing of construction products. 
30-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1

Internal composting waste storage - KBCN0829

Internal composting waste storage facilities are not required to be fixed. Fixed units are only required for recyclable waste. 
30-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1

Internal waste storage – food waste requirement - KBCN1516

The specific requirement to provide food waste storage under crit 4c applies, regardless of whether the 'Composting facilities and management' credits are sought or whether the local authority currently collects food waste. The provision of space for food waste storage must be met, to account for current or future food waste collection by the relevant authority. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Knowledge Base – Applicability of HQM KBCNs to UK New Construction: Residential V6.1 - KBCN1731

The assessment issues and criteria in BREEAM UKNCR V6.1 are broadly the same as HQM V6, except for the specific changes outlined in KBCN1723. We are now in the process of undertaking a comprehensive review of previous guidance on the Knowledge Base for HQM One and HQM V6 to determine its applicability to UKNCR, and the Knowledge Base will be updated in due course. In the meantime, if you wish to apply a previous KBCN, please review the changes outlined in KBCN1723 and compare the criteria in the technical manuals. If the criteria are the same, and you are satisfied that a previous HQM KBCN is relevant to UKNCR, you can follow this guidance. If there are differences in the UKNCR criteria, but you believe a previous HQM KBCN can be applied, please submit a technical query on the webform to confirm this.

Late appointment of the Suitably Qualified Ecologist - KBCN0603

If the Suitably Qualified Ecologist (SQE) is appointed after the commencement of activities on-site and if the other requirements of this issue are met, then credits can still be awarded, provided that: 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
13th Jul 21 Correction - applied to UK NC2018 LE05

Late liaison and collaboration of project team with representative stakeholder - KBCN1814

Where it can be demonstrated that liaison and collaboration between the project team and the representative stakeholder occurred later than the early design stages (typically post-RIBA Stage 2 or equivalent), the criteria may still be met if a suitably qualified ecologist confirms that these late discussions have not compromised the site’s ability to achieve its optimal ecological outcome, in accordance with the mitigation hierarchy of action: 1. Avoidance. 2. Protection. 3. Reduction or limitation of negative impacts. 4. On-site compensation. 5. Enhancement considering the capacity and feasibility within the site, or where this is not viable, off-site.

LCA Concept Design stage submission before the assessment is registered - KBCN1437

In certain circumstances, it may be necessary for the design team to submit the Concept Design stage LCA before the BREEAM assessment has been registered. In such cases, please submit the LCA tool and associated files along with details of your situation as follows:

LCC – Competent person or Suitably Qualified Cost Consultant (SQCC) - KBCN1803

The definition of a competent person, or SQCC as named within HQM or BREEAM New Construction Residential, has been updated to provide further clarification and is now defined as set out below: An individual achieving all the following items can be considered to be ‘suitably qualified’ for the purpose of completing the LCC credits:
  1. Holds a recognised qualification for undertaking life cycle costing studies and/or a degree/postgraduate diploma or equivalent qualification in quantity surveying, construction economics or other construction-related subject.
  2. Has acquired substantial expertise through a minimum of three years relevant experience (within the last five years). The experience must clearly demonstrate a practical understanding of life cycle costing in construction and the built environment and show an ability to identify and demonstrate cost and performance enhancement measures.
  3. Is not professionally connected to a single manufacturer
A CV should be provided demonstrating their experience and knowledge against the above requirements.  

Legally harvested and traded timber – Examples - KBCN0956

The following examples are considered compliant for BREEAM: Legally harvested:
  1. Evidence of compliance with the UK government Timber Procurement Policy (see here, timber bought inside the UK only)
  2. FSC, PEFC, SFI or GiB certification
  3. Evidence of compliance with the EUTR (timber bought inside the EU only)
  4. Risk assessment/due diligence documentation demonstrating a low risk of non-compliance with the ‘legally harvested’ requirements given in the manual.
Legally traded:
  1. Evidence of compliance with the UK government Timber Procurement Policy (see here, timber bought inside the UK only)
  2. FSC, PEFC, SFI or GiB certification
  3. Risk assessment/due diligence documentation demonstrating a low risk of non-compliance with the ‘legally traded’ requirements given in the manual.
04-Dec-2025 - Examples updated to include Grown in Britain (GiB) certification. Previous reference to 'CPET' clarified as 'UK government Timber Procurement Policy'.
KBCN applied more widely to all relevant scheme issues in BREEAM and HQM

Low or no ecological value to manage and maintain - KBCN1383

The purpose of the criteria is to recognise projects that are positively contributing to local ecological value by managing and protecting it as part of the site being assessed. If there is no ecological value to maintain or manage on the site, the purpose of the criteria is not being met and credits cannot be awarded by default. For sites with low ecological value to begin with, the criteria encourage projects to consider ways to create ecological features that support local biodiversity as part of the development (e.g. habitat creation as part of the ecology issues focused on ecological enhancement). 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Measuring ecological change – Using Defra Metric 3.0, 3.1, 4.0 and the Statutory Biodiversity Metric - KBCN1476

Defra Metric 3.0, 3.1 and 4.0 have been mapped to the BREEAM Change in Ecological Value Calculator and can be used in assessments for BREEAM UK New Construction 2018, BREEAM Infrastructure Version 6 (formerly CEEQUAL Version 6), and Home Quality Mark ONE. Please see the table below for the applicable benchmarks where Defra Metric 3.0, 3.1 or 4.0 is used. The benchmarks from the Defra Metric are taken from the lowest score from the three metrics (Habitat, Hedgerow, River). If a metric is not present, e.g. there is no river on the site, the score of 0 for that metric must be ignored when taking the lowest score.
Metric result Credits awarded
BREEAM (GN36) / Defra Metric 2.0 Defra Metric (3.0, 3.1, 4.0) and the Statutory Biodiversity Metric BREEAM UK NC 2018 HQM ONE BREEAM Infrastructure V6
Less than 75% Less than -25% 0 0 0
Between 75% and 94% Between -24% and -6% 1 2 10
Between 95% and 104% Between -5% and 4% 2 4 20
Between 105% and 109% Between 5% and 9% 3 6 30
110% and above 10% and above 3 + 1 exemplary level credit 8 40
The above approach can be used to determine the percentage score that describes ecological change in Guidance Note 36 (Table 9: Reward Scale), if the following is also met: Alternatively, the BREEAM Change in Ecological Value calculator tool will continue to be accepted until stated otherwise. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
03 Mar 2022 - Updated to clarify how Defra Metric 3.0 can be applied to current schemes
27 May 2022 - Updated to Defra Metric 3.1
21 Sep 2022 - Clarification on the figure to use from Defra Metric 3.0 or 3.1
14 Oct 2022 - Updated following rebrand of CEEQUAL to BREEAM Infrastructure
16 Feb 2023 - Added rules and clarification from KBCN1407.
01 Jun 2023 - Addition of DEFRA Metric 4.0

Measuring ecological change with Defra Metric 2.0 ~ superseded ~ - KBCN1407

For DEFRA Metric 3.0 and 3.1, please see KBCN1476 - Measuring ecological change – Using Defra Metric 3.0 and 3.1 The Defra Metric tool 2.0 can be used to determine the percentage score that describes ecological change in Guidance Note 36 (Table 9: Reward Scale), if the following is also met: Alternatively, the BREEAM Change in Ecological Value calculator tool will continue to be accepted until stated otherwise. This is subject to change as part of transitioning to Defra Metric 2.1, once this has been finalised and released. The latest timescales and information on this are available from Natural England: https://www.gov.uk/government/organisations/natural-england Edited 21/09/22:  The BREEAM Ecological Change tool determines credits using the lowest 'Post development percentage of Pre development' score for the Area based and Linear habitats. If the Defra Metric tool 2.0 has been used, the 'Total net % change' results should be used to calculate this, which is the lowest score of the three metrics. For example, if the Defra Metric 2.0 tool suggests that there is a net change of -65%, then the 'Post development percentage of Pre development' would be 35% for the purposes of BREEAM. Likewise, if the net change is +8%, then the percentage would be 108%. 
30-Oct-2025 - Applied to HQM V6 and UKNCR V6.1 as a signpost to KBCN1476
21 09 2022 Paragraph added to clarify

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

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

Segregated storage of timber

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

Minimum requirements - KBCN1454

Issue 11.1 Aftercare > Crit 2.c is only applicable where Issue 9.3 Inspections and Completions > Crit. 12 and 13 are met. This supersedes previous guidance in this KBCN. 
29-Oct-2025 - Applicable to Issue 11.1 only. Applicable to HQM V6 and UKNCR V6.1

Minimum ventilation rate above boost flow rate - KBCN1364

Where a ventilation system has the capacity to meet the minimum ventilation rate (Criteria '03 Ventilation rates') and where this is above the boost flow rate, then the boost flow rate can be deemed to have been met by default. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Mixed use buildings (benchmark) – Embodied carbon reporting tool  - KBCN1729

Where the assessed building is mixed use, a comparative, floor-area-weighted benchmark is used to determine the number of credits awarded for criteria ‘06 Embodied carbon benchmark comparison’.   To calculate this, in the ‘Embodied carbon reporting tool’, in the ‘1. Project Input’ tab, enter:  This will enable the tool to calculate the floor area weighted benchmark on the ‘5. Benchmark’ tab

Off-site construction - KBCN1315

The principle for prefabricated homes is the same in terms of the construction inspections criteria to ensure quality assurance is carried out throughout construction. As long as evidence is provided to demonstrate the criteria are being met, this should be acceptable. 
29-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Oil-fired boilers benchmarks - KBCN1293

It has come to our attention that there is an error in Table 35, relating to the NOx emission benchmarks for oil-fired boilers. The table below confirms the correct benchmarks.
Appliance type and unit Fuel 7 credits (Low pollution location) 7 credits (High pollution location) 10 credits (Low pollution location) 10 credits (High pollution location)
Boiler (mg/kWh) Oil 56 73 56 55 67 50 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
This will be confirmed in the next update of the technical manual, but can be applied immediately to HQM ONE projects.

Other smart controls - KBCN1317

Where other forms of home controls are present that are not listed in the additional smart solutions criteria, please contact BRE for consideration. Due to the innovative nature of smart home systems, the examples provided are by no means a full list of all of the types of controls that are, and will be, available. 
29-Oct-2025 - Applicable to all HQM versions and UKNCR V6.1

Post-collection waste sorting - KBCN1109

Where there is post-collection sorting, individual bins for each waste stream would not be required, but must meet the required minimum volume and reflect the number of recyclable waste streams collected by the waste collection authority. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Pre-testing apartment blocks - KBCN1298

For the purposes of the pre-testing criteria, it is possible for there to be flexibility with developments such as apartment blocks if a preliminary air leakage test is carried out for the whole apartment block (instead of every single unit within the block separately). If this approach is taken, inspection and preliminary air tightness testing also needs to be done on a sample of homes within the block, after all services have been installed, as determined by the appropriately qualified person who has determined the pre-testing regime. The sample size should include the apartments that are most likely to experience leakage issues, such as those with a large external surface area and more complex or abundant fabric joints and seals, in order to better identify and resolve potential issues through remedial works. 
29-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Product procurement policy after RIBA stage 2 - KBCN0994

Where a product procurement policy is put together at a later stage than RIBA stage 2, ‘02 Product procurement policy and product environmental information’ credits may still be achievable. If it can be confirmed by the person responsible for the policy that the policy will not restrict procurement of responsible sourced construction products due to its late production and implementation, then the credits can still be awarded (provided all other compliance requirements are met). 
30-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1

Project preparation criteria for assessments starting after RIBA stage 3 - KBCN1285

The purpose of the minimum requirements within the 'Quality assurance' category is to ensure consumers can trust every HQM-certified home has been built and finished to a high standard, which is essential to the value of HQM. Emphasising quality from an early stage is an important part of achieving this, which is why the project preparation issue criteria requires processes and plans to be in place before RIBA stage 3. Ideally, the HQM assessor would be appointed earlier than this to help get the most from using HQM when there is the best opportunity to influence the project and credits are easier to achieve. However, there can be flexibility if the same quality outcomes outlined in the project delivery plan will be achieved. The project delivery plan criteria aim to encourage processes that will deliver quality homes, early enough to influence things like scheduling, procurement, resources and roles that may be required, if they aren't already in place. This helps achieve the delivery of quality outcomes on-site required as part of the other minimum requirements in Project Preparation, Commissioning and Testing and Inspections and Completion. If there is flexibility, it needs to be ensured that these requirements will still be met. To consider this further, more information about the project needs to be sent via the webform on the Assessor Support page of BREEAM Projects including: 
29-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Raised access floors – Responsible sourcing - KBCN00018

For the purposes of responsible sourcing, raised access floors should be considered as part of the floor structure. 
30-Oct-2025 - Applicable to HQM Beta, HQM One, HQM V6 and UKNCR V6.1

Recognised local ecological expertise - KBCN1193

Organisations/individuals that have the expertise to provide specialist input or guidance to inform the adoption of locally relevant (within the zone of influence) ecological measures that enhance the ecological value of the site.  This may include bodies such as: a. Local Government and other statutory relevant organisations. b. Local community groups, organisations, or charities, such as the Wildlife Trusts. c. Local, regional, or national fauna focused groups such as Bug life, RSPB, Bat Conservation Trust etc. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
This definition will be added to the relevant technical manuals in their next re-issue.

Relating green roofs to multiple assessments in the same building - KBCN1195

A green roof on top of such buildings can be used to award credits for each assessment for which the Land use and ecology Issues apply. The benefit can be applied to to all assessments undertaken for the building provided all are completed within the appropriate time-frame of a valid ecological survey. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Responsible Sourcing – Scope when a BREEAM assessment covers only part of the new building - KBCN1217

To give reliable results, the assessment of responsible sourcing must capture the interactions that occur across an entire design (the system). A design decision in one part of the design will, in many cases, cause knock-on effects to other parts of the design. If only part of a building being designed is included in the assessment the designer may choose a design option that optimises responsible sourcing performance for the limited part analysed, but will be unaware of potential detrimental effects to the overall responsible sourcing performance of the building. In addition, if a responsible sourcing assessment only includes the construction products that form the BREEAM assessment area, inconsistencies arise with regards to construction products that serve all areas of the building in common. For example, an assessment on a central floor that excludes the roof, compared with an assessment on the (otherwise identical) top floor that does include the roof. This approach would be unfair. Therefore, notwithstanding the exception below for internal finishes, the responsible sourcing scope must include the whole building design (as defined in Mat 03, 'Scope of assessment') even if the area covered by BREEAM assessment is only part of the design. The exception to this is any construction products classified as '3. Internal finishes'. Internal finishes are specific to each part of the building with little or no functional relationship with other parts. Therefore, the scope of the assessment of internal finishes shall be limited to the assessed area only. 
08 October 2025-made applicable to HQM and UK NCR

Responsible sourcing certification – validity - KBCN1693

Where it can be demonstrated that the responsible sourcing certificates were valid either at the time of specification, or at the time of purchase, they may contribute to the awarding of the credits. BREEAM is primarily trying to encourage designers to take responsible sourcing into consideration when specifying or selecting products and as such it is not necessary for certification to be valid at the time of design or post-construction stage submissions. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Risk to Ecologist’s safety - KBCN0704

In some situations a significant safety risk may prevent a suitably qualified ecologist from attending the site to undertake a site survey. In these cases a desktop study can be used to demonstrate compliance, where the ecologist confirms that it is an acceptably robust substitute. In these cases, the assessor must provide evidence to confirm the type of significant safety risk present. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Scheme classification for residential projects (UK) - KBCN1225

Choosing the right scheme for developments is the starting point to ensure successful outcomes and value, in terms of quality and sustainability to building owners and for occupants of the building. In light of the release of Home Quality Mark (HQM) ONE we have reviewed the existing guidance around scheme classifications of new build residential buildings and have removed ‘GN03 – Scheme Classification – Domestic buildings’ from BREEAM Projects. When GN03 was written, the Code for Sustainable Homes (CSH) did not fully consider communal areas within residential blocks as part of the assessment. CSH was also not applicable in Scotland. GN03 was developed to clarify the differences between BREEAM Multi-Residential, CSH and EcoHomes, and when each scheme should be applied. There is now a clearer distinction between BREEAM Multi-residential and HQM and when these should be used. Ultimately, the determining factor for a scheme classification is now focused on the intent of the building and who is going to be the end user (as opposed to previous guidance which considered aspects such as percentage of communal areas, etc.). Broadly, if the building’s main purpose is for long term homes then Home Quality Mark is the correct scheme to use. Please use the following as guidance to identify the most appropriate scheme: UKNCR / Home Quality Mark (HQM) HQM has been designed with the occupant in mind. It assesses homes individually, but can also account for common areas associated with blocks of self-contained homes. HQM outputs (rating and indicators e.g. ‘my cost’, ‘my wellbeing’ and ‘my footprint’) are specifically aimed at those living in the home and are designed to better inform the occupant about the benefits of the home that they are purchasing or renting. An HQM project will meet one or more of the following criteria: Be designed to meet the function of a long-term self-contained home even though there may be some provision of communal facilities which can be used on a voluntary basis Be classified under Building regulations Part L1a (i.e. required to complete SAP assessments, although there may be some linked SBEM assessed spaces associated with the project) As such, HQM projects could be homes for sale, social housing or homes for rent (PRS and Built to Rent). They may also include some student and retirement/sheltered accommodation where the units are comparable to a normal self-contained flat/home. BREEAM Multi-residential For the purposes of BREEAM Multi-residential assessments, the term ‘multi-residential’ is used in the context of buildings that contain rooms for residential purposes alongside communal facilities for catering, leisure, care etc. These residential rooms would normally not have the full, self-contained functions of a home. This scheme usually covers more specialist residential care homes, student halls of residence, and other more communal accommodation. The scheme can cater for a small number of self-contained dwellings where these form part of a larger multi-residential development (e.g. on-site warden homes etc.). Under this scheme, the project is assessed on a whole building basis and as such does not seek to reflect the performance of individual residential units/rooms. A BREEAM Multi-residential project will meet one or more of the following criteria: Be provided for transient /non-permanent occupants Provide suitable accommodation for occupants requiring support from carers, wardens or similar Include shared living spaces Be classified under Building regulations Part L2a (i.e. required to complete SBEM assessments, but can account for some SAP assessed spaces where associated with the project) As a rule of thumb, if the building contains rooms rather than self-contained flats or homes, a BREEAM Multi-residential assessment would probably be most appropriate. We are aware of some confusion over the meaning of the term ‘multi-residential’ in this context and will be considering the use of term as part of the next review of the BREEAM Multi-Residential scheme. If you are unsure of the appropriate scheme classification for a particular project, please contact the BREEAM office before registering the project. 
11-Nov-2025 - Applicability to current UKNC, HQM and UKNCR confirmed

Site clearance prior to purchase of the site - KBCN1197

For sites cleared prior to purchase of the site and less than five years before assessment, a Suitably Qualified Ecologist should estimate the site’s ecological value immediately prior to clearance using available desktop information (including aerial photography) and the landscape type/area surrounding the site. Where it is not possible for the ecologists to determine ecological value of the site prior to site clearance, i.e. where there is no evidence to determine compliance, the credits must be withheld. For sites cleared more than five years ago, the ecological value of the site must be based on the current situation, on the basis that, within five years, ecological features would have started to re-establish and this is, therefore, representative of the site’s ecological value prior to development. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Site wide approach to ecological enhancements - KBCN1194

A site-wide approach to ecological enhancements can be used on sites where multiple buildings share areas of soft landscaping. The enhancement benefits are applied to the individual building assessments within the site. The benefit can be applied on a site-wide basis provided all developments are completed within the appropriate timeframe of a valid ecological survey. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Solid concrete washout – Site waste management - KBCN00063

Solid concrete washout waste should be included in the waste resource efficiency benchmarks. 
30-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1
 

Sound Insulation testing for Cupboards - KBCN1299

A cupboard (even built in) does not constitute a room and does not need to be assessed for the 'Sound insulation levels for internal walls and floors' credits as it is not permanent (part of the home's fabric) and also non-habitable. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
 

Sound testing between rooms - KBCN1303

Only lab tests carried out in accordance with Part E of the building regulations are accepted as evidence to show compliance with the requirements sound insulation between rooms ( 02 Sound insulation levels for internal walls and floors - HQM ONE). In-situ testing and software calculations are not acceptable ways of  showing compliance. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
 

Submitting aftercare & post occupancy evaluation data - KBCN0589

Where credits have been awarded which require post-occupancy evaluation or an element of aftercare data collection (according to scheme requirements) from the building once operational and occupied, the data gathering must take place at the specified time and the findings reported to BRE. The timing of this evidence gathering depends on the criteria of the specific BREEAM scheme. However, for all schemes, once the evidence is due for submission, it should be sent on the assessor webform with the following subject; 'BREEAM Assessment Type - Building Data - BREEAM Assessment Reference' For example: 'BREEAM NC 2018 - Building Data - BREEAM-1234-5678' 
29-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1
05 Nov 2024 - Wording clarified and link to the webform added
This replaces KBCN0695 for HQM.

Suitably Qualified Ecologist – Other recognised organisations - KBCN0192

Provided the individual meets all other requirements as outlined in the definition of a Suitably Qualified Ecologist, in addition to the organisations listed, full members of the following organisations can also be considered as suitably qualified 
30-Oct-2025 - Wording clarified. Applicable to HQM V6 and UKNCR V6.1
   

Summary of Changes – UK New Construction: Residential V6.1 - KBCN1723

UK New Construction: Residential V6.1 (UKNCR) is an update to the Home Quality Mark V6 (HQM V6). It includes a minor technical update, addressing key feedback from our HQM assessors, and the broader market. The technical manual was released on 16 April 2025.    The updates are limited in scope, with the main changes in:   There are minor changes and clarifications in:   The update also includes corrections throughout the manual for minor known issues and typographical errors in HQM V6.   The below table summarises the changes made:  
Issue
Description of update
1.2 Sustainable Transport Options - Updated ‘Cycle storage’ definition has replaced  'Cycle storage requirements' definition
4.1 Indoor Pollutants Updated ‘Representative sampling of indoor air’ methodology item. Updated ‘Minimising airborne formaldehyde, and airborne TVOCs, from all sources – calculation method’ methodology item, to clarify use of BS ISO 16000-6:2021 VOCs in air by active sampling. Clarified Methodology items ‘Accreditation of organisations performing laboratory analysis’ and ‘Accreditation of organisations performing sampling’.
4.2 Natural Light   This issue has been substantially rewritten, and extensive changes have been introduced. Changes in issue name Issue is now called ‘Natural light’ Changes to criteria (new) - 4 credits – Daylight illuminance (Kitchens) - 4 credits - Daylight illuminance (Living rooms) - 2 credits - Daylight illuminance (Bedrooms) - 3 credits – Direct sunlight Methodological changes Daylight is now assessed using the target illuminance metric rather than the previous daylight factor metric. Bedrooms are now considered in the daylight assessment. And a new direct sunlight metric has been introduced. This updates the natural light methodology in line with current best practice.
4.3 Noise Sources Updated Methodology item, ‘Internal noise levels – habitable spaces and kitchens’.  
4.4 Sound Insulation Clarified criteria 1 requirements for communal areas and co-living buildings. Updated ‘Suitably Qualified Acoustician (SQA)’ definition.
4.5 Temperature   - Clarified ‘Projected climate change environment’ methodology item, to clearly identify the DSY weather data files that should be used.
4.6 Ventilation   - Updated criteria 7 reference to ANC Guidelines Measurement Of Sound Levels in Buildings 2020.
5.1 Energy and Carbon Performance - Removed reference to SAP XML files in the methodology section.
6.2 Building Life Cycle Assessment This issue has been substantially rewritten, and extensive changes have been introduced. Issue name - Issue now called ‘Building life cycle assessment’. No changes - 2 credits – Product procurement policy. - Up to 4 credits – Product environmental information. New criteria - 3 credits – Early design LCA and embodied carbon reporting. - 2 credits - Technical-design and embodied carbon reporting LCA. - 4 credits - Post-construction LCA and embodied carbon reporting. - Up to 8 credits - Comparison against the embodied carbon benchmarks. - 2 credits - Submit embodied carbon data to a public database. Methodological changes The new methodology includes calculations and reporting of LCA and embodied carbon at building level during concept design, technical design, and post-construction stage. The calculations must still be completed with a BREEAM recognised LCA tool following EN15978. The credits for different life cycle stages can be achieved independently of one another (i.e. if you do not target the concept design credit you can still target the technical design credit). Changes to the benchmark  The benchmark comparison credits have been changed to align with industry standards. This is now at building level (not dwelling level). It includes modules A1-A5, B1-B5, C1-C4 and is in measured in kgCO₂e/m². Clarification of Evidence Requirements Clarification of evidence requirements across all stages.
6.3 Life Cycle Costing - Clarified that, for criterion 2, reports must be available to potential owners, rather than occupiers.
9.1 Project Preparation - Included a post-construction column in the ‘Schedule of evidence requirements’ table.
9.2 Commissioning and Testing - Updated Table 55 to refer to ‘EAS (Elmhurst Airtightness Scheme)’.
9.3 Inspections and Completion - Updated criterion 1 to confirm the relationship to the ‘Construction inspections scope’ Methodology item, and Table 55. - Clarified where criteria relate to potential owners, rather than occupiers.
10.1 Responsible construction practices - Clarified items p and q in Table 57.
11.2 Home information - Updated criterion 1 and the ‘Accessible and flexible format’ definition to clarify the requirement for hard copies of home information.
11.4 Post Occupancy Evaluation - Introduced ‘Sample of homes’ Methodology item, confirming how homes can be sampled for this issue.
Appendix A Updated indicator scores for the following issues, to reflect changes made to the criteria for these issues: - 4.2 Natural Light. - 6.2 Building life cycle assessment.
Appendix C Updated text to reflect changes made to Evidence Tables across all issues.  
All  Updated evidence guidance for all assessment issues '- Additional guidance on evidence requirements has been added to all assessment issues, in line with the recent improvements to BREEAM UK New Construction 2018 and Version 6.1. 
15 April 2025  - Updated to reflect the latest changes prior to release

Thermographic survey – Seasonal constraints - KBCN00031

Where seasonal constraints prevent the thermographic survey from being completed prior to certification at the post construction stage, the requirements can be satisfied with: Thermographic surveys are designed to map the thermal efficiency of buildings and to detect areas where there are breaches in the thermal envelope. Surveys need to be conducted when temperature differences between the external areas of the building and surrounding air can be detected after the envelope is sealed. There may will be instances where the survey cannot be done before certification after the envelope is sealed and as such, the survey would take place after certification.  
29-Oct-2025 - Applied to all HQM versions and UKNCR V6.1

Timing of Ecological survey/report - KBCN0292

If the ecologist's site survey and/or report is completed at a later stage than required, the assessor would need to be satisfied that it was produced early enough for the recommendations to influence the Concept Design/design brief stage and leads to a positive outcome in terms of protection and enhancement of site ecology. 
30-Oct-2025 - Applicable to all HQM versions and UKNCR V6.1
21/02/2017 Wording clarified.

Training courses that provide competencies to be considered an AQP - KBCN1294

We are not aware of any specific training courses that provide all the necessary competencies to be considered an AQP but they may come from a combination of sources: 
29-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1

UKNCR V6.1 – Excel tools and templates: Summary of changes - KBCN1728

Excel tools and templates available for use for UKNCR V6.1 and the changes made:  New Tools  Embodied carbon reporting tool - to reflect the updates made to the ‘6.2 Building life cycle assessment’ issue.  Rebranded tools  The following tools have been rebranded to ensure it is clear that they are applicable to both HQM and UKNCR. Please refer to the tool for confirmation of the versions of HQM each tool can be used for.   No technical changes have been made to these tools:   To access these tools, please go to the ‘View and download the UKNCR V6.1 Assessment Tools and supporting documents’ folder on BREEAM Projects 

Ventilation air intakes CIBSE TM21 compliance - KBCN0669

As TM21 largely contains general guidance, rather that strict rules, it is expected that the designer or services engineer would be familiar with the requirements within TM21 and be able to determine which sections are relevant for the development in question. The main areas to consider in relation to TM21 are: • Provision of filtration • Positioning inlets to minimise impacts of traffic pollution • Positioning inlets to minimise impacts of other local sources of pollution • Positioning inlets to minimise recirculation from ventilation exhausts Confirmation is required that each of these items (and anything else the designer/engineer deems relevant) has been considered in determining the location of air intakes. Suitable evidence may for example be in the form of a short report with diagrams indicating the proposed location of intakes, with respect to sources of pollution and with reference to the relevant parts of TM21. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Verification of an ecology report / information - KBCN1192

If the appointed ecologist does not meet the definition of a ‘suitably qualified ecologist’ (SQE) the report / information submitted to support the assessment must be verified by an individual who does. 1. The individual verifying the report must provide written confirmation that they comply with the definition of a ‘suitably qualified ecologist’. 2. The verifier must provide signed confirmation that they have checked and approved the report. This must clearly reference the report and can be in the form of a signed letter or their printed name and signature on a completed pro-forma. In doing so, they are deemed to confirm that the report: a. represents sound industry practice b. is correctly, truthful, and objective c. is appropriate given the local site conditions and scope of works proposed d. avoids invalid, biased, or exaggerated statements Such confirmation from the verifier must be provided in addition to all other information required by the relevant technical manual and referenced as part of the evidence submitted to demonstrate compliance. It can take a number of years for an ecologist to meet the SQE definition. Verification of information by an existing SQE supports the practical application of the assessment criteria and is in line with industry practice. 
30-Oct-2025 - Applicable to HQM One, HQM V6 and UKNCR V6.1
13-Aug-2019 Updated to clarify, in practical terms, what evidence of verification will be considered acceptable.
 

VOC product emission certificates – validity - KBCN1689

Where it can be demonstrated that construction product emission certificates were valid either at the time of specification, or at time of purchase, they may contribute to awarding credits.

BREEAM is primarily trying to encourage designers to take construction product emissions into consideration when specifying or selecting products and as such it is not necessary for certification to be valid at the time of design or post-construction stage submissions.

30-Oct-2025 - Applicable to UKNCR V6.1

Warranties covered by alternative consumer codes - KBCN1289

Alternative consumers codes to the ones referred to in the Aftercare issue are acceptable if they are approved by the Trading Standards Institute, such as the Consumer Code for New Homes and the Consumer Code for Home Builders. If you are unsure if a warranty or consumer code is acceptable for the purposes of HQM, please raise a technical query. 
29-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1

Water fittings – Categories present - KBCN1455

Note that the modelled water consumption benchmark in Criterion 1 must also be met to award credits. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
 

When PV is connected to the communal landlord areas in a block of flats - KBCN1444

In terms of crit 4.a (There is a direct supply of energy produced to the home under assessment), where PV is connected to the communal landlord areas in a block of flats, instead of directly to individual flats, this criteria can be deemed to be met because PV wired to each individual flat would conflict from a material efficiency point of view. 
30-Oct-2025 - Applicable to HQM V6 and UKNCR V6.1
Information correct as of 29thMarch 2026. Please see kb.breeam.com for the latest compliance information.