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Common Assessment Standard (CAS) Update - 25 September 2025

Following publication of Build UK's latest version of the Common Assessment Standard on 1 July, the Building Safety section is now mandatory for all companies that carry out work under the Building Safety Act. A number of Build UK members have specified that companies in their supply chain must have successfully completed this section by 1 October 2025.

Those members include BAM, Bowmer + Kirkland, Galliford Try, Kier, Mace, Morgan Sindall, Tilbury Douglas, VINCI and Wates, and companies working for any of these organisations should check that they have now completed the Building Safety section. Build UK's guide to the Common Assessment Standard question set includes guidance on answering the questions, including the evidence that can be submitted to support a response and where further information can be found.

Companies that have achieved the Common Assessment Standard from any one of the Recognised Assessment Bodies do not need to obtain certification again from any others. Instead, they can agree to share their data at no cost with the other Recognised Assessment Bodies so it is visible to more Contractors and Clients. Don’t duplicate: giving permission to share your data is quick and simple and will help businesses across the supply chain to save time, reduce costs and win work.

The final report of the Grenfell Tower Inquiry included a recommendation to introduce a?licensing scheme?for Principal Contractors wishing to work on Higher-Risk Buildings (HRBs). Build UK has met with the Ministry of Housing, Communities and Local Government (MHCLG) to present the Common Assessment Standard, which is already used by over 21,000 suppliers to demonstrate their organisational capability. As a next step, we have been asked by MHCLG to host a joint roundtable with members that undertake the role of Principal Contractor on HRBs to discuss the objectives of a licensing scheme and how existing initiatives such as the Common Assessment Standard might be used effectively.

01-10-2025

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