15 Sep 2025

Build UK Publishes Guidance for Gateway 3 Applications

Learn more about Build UK’s Gateway Three guidance for Higher-Risk Buildings, including the BSR Completion Certificate process, required documents & compliance steps.

Building on their Gateway Two guidance, Build UK has published an overview of Gateway Three, and the information and documents that must be included within an application to the Building Safety Regulator (BSR) for a Completion Certificate for a Higher-Risk Building (HRB). Gateway Three is a new application process which requires all the information to be submitted, even where it was previously provided as part of the Gateway Two application. 

The Build UK guide is aligned with the BSR application portal and sets out the full list of questions that must be completed, including whether they are multiple choice, free text or a PDF document upload, to make it as easy as possible for members preparing and submitting a Gateway Three application. 

Find out more by reviewing the documents below: