BCIS commends cross-industry building standard as ‘milestone’ for emissions reduction

BCIS has welcomed the launch of a ground-breaking standard for defining net zero carbon aligned buildings, describing it as a milestone for emissions reduction in the built environment.

The voluntary UK Net Zero Carbon Buildings Standard (UKNZCBS) Version 1 sets out criteria for assessing whether new construction, existing buildings and retrofit projects are aligned with net zero carbon objectives.

Commenting on the launch, BCIS executive director James Fiske said the standard represents an important step towards greater consistency in how carbon performance is defined and assessed across the sector.

‘For the first time, our sector has a shared, formal framework, informed by extensive, cross-industry piloting, for determining what a zero-carbon building looks like in practice. It sets out clearer parameters for assessing carbon performance and is expected to strengthen accountability among professionals and businesses across all stages of the built environment lifecycle,’ he said.

‘In recent years, initiatives such as RICS’s Whole Life Carbon Assessment Standard, the Built Environment Carbon Database and tools including BCIS Life Cycle Evaluator have laid the foundation for measuring and reporting emissions.

‘UKNZCBS builds on that work and will hopefully prompt industry and government to consider how whole life carbon can be managed more effectively. The fundamental goal with all of these resources is to ensure our sector measures and reports emissions with more urgency and consistency to deliver meaningful reductions.’

The standard was informed by input from more than 350 experts and feedback from over 200 pilot projects.

It sets out criteria covering operational energy, upfront embodied carbon, lifecycle embodied carbon reporting, fossil fuel elimination, on-site renewable generation, operational water use, refrigerants and electricity demand management.

Since the pilot launch in September 2024, the framework has been refined following industry testing. Updates include annexes covering landlord-only and tenant-only certification routes, optional verified checks at practical completion and guidance on recognising other certifications and communicating certification outcomes.

Verification services for UKNZCBS are expected to become available from the second quarter of 2026.

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