NHBC Standards

Your essential guide to house building from foundations to roofs and finishing

a photo of three tablets displaying the nhbc standards guide

What are NHBC Standards?

The NHBC Standards define the technical requirements and performance standards for the design and construction of new homes registered with us and provide guidance on how these can be achieved. 

Our dedicated Standards team is committed to continuous improvement. They work with stakeholders across the industry to ensure that the NHBC Standards keep pace with regulatory change, reflect the latest consumer expectations and the industry’s needs. This means that the Standards are always relevant, providing additional support and guidance to help builders and developers to raise standards in house building by championing high-quality homes and protecting homeowners.

NHBC Standards

NHBC Standards 2024

NHBC Standards 2024 is the current version and available to view online. It applies to new homes where the foundations were started on or after 1 January 2024.

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Order the NHBC Standards 2024

Want a printed copy? You can order a copy through our shop.

What's changed in the NHBC Standards 2024?

These are the most significant changes:

  • a new Chapter 4.6 on engineered fill covering NHBC guidance on meeting the Technical Requirements and recommendations for using engineered fill foundations to support residential developments, external works and infrastructure
  • revisions to Chapter 6.1 including the provision of cavity trays to complicated junctions and additional insight on the design and specification of windposts
  • updates to Chapter 6.3 on internal masonry walls and fire-stopping details
  • improvements to Chapter 7.2 to provide more information on durability, ventilation strategies, integration of roof solar technologies and roof cassette systems
  • a revision of Part 8 (Chapters 8.1 – 8.6) to improve the usability of the sections and improve guidance on heat pumps and solar photovoltaics, ensuring alignment with the Requirements for Electrical Installations (IET Wiring Regulations 18th Edition), and weephole locations in relation to gas meter boxes.

We’ve also made changes to:

  • Chapter 3.3 - more information on durability of timber
  • Chapter 5.1 - small changes to cover cold bridging and radon maps updates
  • Chapter 5.2 – changes to contaminants and DPMs
  • Chapter 5.4 - small changes for podiums
  • Chapter 6.2 – changes relating to timber frame expansion and contraction and permissible gaps under openings
  • Chapter 6.4 – timber and concrete upper floors – additional guidance on joist spacing and clearance
  • Chapter 6.6 - updates to fire precautions, design of steps, guarding and balustrades, structural design
  • Chapter 7.1 – additional guidance covering balcony drainage edge design and upstands to podium decks and flat roofs.

Discover the NHBC Standards 2024

Stay informed about the changes using our video series

Conversions and renovations 2023

The Standards for Conversions and Renovations provide guidance on the type of project that will be acceptable to NHBC, the scope of the survey(s) and work that will be required.

Conversions and renovations are projects that involve work to existing buildings or parts of existing buildings.

Examples include:

  • the conversion of an existing residential building into flats
  • the renovation of an existing residential building(s)
  • the subdivision or merging of existing dwelling(s) or flat(s)
  • the addition of a new storey to an existing building
  • façade retention schemes.


Previous versions of NHBC Standards

The NHBC Standards online archive contains issues going back to 2010. You can view them all below.

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Technical disclaimer

Any technical information contained on this website is produced by NHBC as guidance solely for all our builder customers as to how to interpret the technical requirements in relation to the warranty cover provided by NHBC under its Buildmark, Buildmark Choice, Buildmark Link, Buildmark Solo, Buildmark Connect or any similar product from time to time. It has not been created or intended for distribution or use outside of that purpose. The technical information contained on this web page does not constitute advice and is not to be relied upon by any third party. Nothing on this web page is intended to, nor should it be taken to, create any legal or contractual relationship. Any third party who chooses to rely upon the information contained on this web page shall do so entirely at their own risk and NHBC accepts no duty of care or liability, however caused, in connection with its use or reliance by any third party.