The UK Net Zero Carbon Buildings Standard
The UK Net Zero Carbon Buildings Standard is a voluntary standard applicable to new build, existing buildings and retrofits.
It is science-led, created by the industry, for the industry, through an unprecedented collaborative effort.
Version 1 was published in March 2026.
It has been updated for clarity and usability following Pilot Testing and wider industry feedback. It includes additional Annexes covering landlord- and tenant-only routes to verification, and an optional verified check at Practical Completion to determine whether a building is on track. A summary of changes can be found in Resources.
If you have any comments about version 1, please submit your feedback via this survey.
Verification to the Standard will open soon, in Q2 of 2026.
The Standard Version 1 - Resource Suite
Submission Proformas
The proforma is a dedicated Excel file which captures the numerical evidence required to demonstrate conformity with the Standard. Two proformas will be available.
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Standard Conformity: Use this for verification against the UK NZCBS Version 1 - available below
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PC-On-Track: Use this version for the PC on Track verified checks (Annex E) - this proforma will be uploaded shortly
How to Use the Standard - Flowchart
This flowchart guides project owners and design teams considering the Standard through the key stages of demonstrating conformity. It outlines the specific requirements for various project types and stages. This is designed as a summary and should be read in conjunction with the main Standard.
