NHBC adds coastal locations chapter to 2027 Technical Standards

NHBC will publish the 2027 edition of its Technical Standards in January 2027, adding a new chapter on building in coastal locations and applying the rules to every registered home whose foundations begin on or after 1 January.

The warranty and insurance provider announced the update on 21 October. The NHBC Standards set out the technical and performance requirements for the design and construction of new homes registered with NHBC, and they are revised every year.

The headline change is Chapter 3.4 Coastal Locations. NHBC said the chapter gives guidance on the appropriate specification of materials in aggressive coastal environments, where exposure to salt-laden air and other coastal conditions can accelerate deterioration.

Alexis Stickley, Standards and Technical Manager at NHBC, said: "The NHBC Standards are an intrinsic part of this mission, providing clear, consistent and practical warranty guidance to the sector."

What has changed

NHBC said only 5.6% of clauses in the 2027 edition introduce a new technical position. Most of the updates are aimed at clarity, usability and alignment with the latest British Standards.

One example is Chapter 6.4.16, which covers joists and openings in timber and concrete upper floors. NHBC said it has gone back to the wording used in the 2025 Standards after customer feedback that it was clearer.

According to NHBC, it consults stakeholders from across the industry when reviewing the Standards so that they stay relevant to builders and developers.

The 2027 Standards apply throughout the UK unless otherwise stated, NHBC's Standards page said. Registered builders can log in to the NHBC Standards website to see a full list of every change, including minor ones, set out in chapter order, and can watch a video guide from the organisation's technical team. Printed copies can be pre-ordered through the NHBC shop.

Why the Standards matter to builders

NHBC said that to sell homes covered by its Buildmark warranty, registered builders and developers must comply with the mandatory technical requirements in the Standards. The organisation is a company limited by guarantee with no shareholders, and describes itself as independent of government and the construction industry.

NHBC first introduced a two-year building warranty in the 1940s, followed by the first 10-year warranty and insurance product in 1965.

The 2026 edition

The new edition follows the same pattern as the current one. NHBC announced the 2026 Standards on 10 November 2025 and published them on 5 January 2026.

That edition updated guidance on rendering in cold weather in Chapter 3.2, aligned Chapter 6.5 with BS EN ISO 1461 on galvanising hot-rolled structural steelwork, and introduced a requirement in Chapter 10.1 to separate plasterboard ceilings from single-skin masonry walls. NHBC also removed some building control guidance from the 2026 edition to clarify that the Standards are warranty guidance.

At the 2026 launch, Richard Smith, Head of Standards, Research & Technical Competency at NHBC, said the organisation is committed to driving quality in house building.

The 2027 edition takes effect for NHBC-registered homes where foundations are begun on or after 1 January 2027.