New UK Verification Scheme Aims To Stop Net Zero Greenwashing In Buildings

Certification company Bureau Veritas has launched the UK Net Zero Carbon Buildings Standard, a voluntary verification scheme designed to test whether a building's net-zero claims hold up against an industry-agreed definition. The scheme is now open for submissions.

New buildings, existing buildings and retrofit projects can all be entered voluntarily, with those meeting the required criteria granted a Net Zero Carbon Aligned verification. The standard aims to reduce greenwashing by measuring actual performance rather than relying solely on design projections.

Verification requires 12 months of in-use energy data alongside as-built upfront embodied-carbon figures, assessed directly by Bureau Veritas. To qualify as Net Zero Carbon Aligned, buildings must remove on-site fossil fuels, generate on-site renewable energy, and minimise both upfront embodied carbon and measured in-use energy consumption.

Carbon offsets cannot be used to meet any of the standard's core requirements. They can only be considered for tackling residual carbon once a building has already satisfied every mandatory limit.

Bureau Veritas vice president Antoine Giros said the scheme's launch represents a shift in the industry, moving away from predicted design-stage outcomes toward measured, independently verified performance once a building is actually in use. He said the company's role is to ensure net-zero claims are accurate and backed by rigorous, independent assessment.

Before final verification, buildings can undergo an interim check at practical completion to gauge whether they remain on track to meet the standard once occupied. Bureau Veritas also offers a separate carbon performance evaluation for buildings that fall short of full Net Zero Carbon Aligned status, allowing them to track decarbonisation progress over time.

UK Net Zero Carbon Buildings Standard chief executive Katie Jackson-Clements said it is now only a matter of time before the first buildings achieve verification, describing early participants as environmental leaders within the UK's built environment sector who will pave the way for further verifications to follow.

The launch adds a formal, third-party verification layer to a UK construction sector where net-zero claims have often relied on modelling assumptions rather than confirmed operational data, a gap the new standard is specifically designed to close.