Building Safety Act 2026: a practical guide for contractors

The Building Safety Act 2022 changed how buildings in England are designed, built and handed over, especially higher-risk buildings. For contractors and subcontractors, the biggest change isn’t paperwork for its own sake. It’s that you now have to prove what you built, with records made at the time the work was done.

This guide summarises what the Act means on site in 2026, and what you can do now to avoid delays at completion.

Building Safety Act summary

• A new regulator. The Building Safety Regulator (BSR) is the building control authority for higher-risk buildings. In January 2026 it became a standalone body, separate from the HSE.
• Dutyholders. Clients, principal designers, principal contractors, designers and contractors all have legal duties to plan, manage and monitor work so it complies with Building Regulations, and to be competent for the work they do.
• Gateways. Higher-risk buildings pass through three gateways: planning (Gateway 1), approval before construction starts (Gateway 2) and approval before occupation (Gateway 3).
• The golden thread. Accurate, up-to-date information about the building must be kept digitally, so the people responsible for it now and in future can find it.
• Change control and reporting. Changes to approved designs must be controlled and recorded, and safety occurrences must be reported to the regulator.

What counts as a higher-risk building?

During design and construction, a higher-risk building is one that is at least 18 metres high or has at least 7 storeys and contains at least two residential units. Hospitals and care homes meeting the same height test are also in scope. Student accommodation and build-to-rent blocks often fall into this category.

What changes for contractors on site

Competence and records

You need to show that the people doing the work are competent, and that the work matches the approved design. “We always do it this way” is no longer evidence. Inspection records, photos, product data and sign-offs are.

Hold points matter more

Safety-critical work such as fire stopping, cavity barriers, compartment walls and façade fixings gets covered up quickly. If it isn’t inspected and recorded before it’s closed, the only way to prove it later is to open it up again.

Evidence is now commercial

Missing records can delay the completion certificate, and with it occupation, sales and final payments. Reports have backed industry concerns about Gateway 3 delays in 2025–26. Good QA records reduce that risk.

Gateway 2 and Gateway 3 in brief

• Gateway 2: before building work starts, the BSR must approve the building control application, including how compliance will be managed and recorded during construction.
• Gateway 3: before the building can be occupied, the BSR must issue a completion certificate. The application must show the building as built complies, with supporting information handed over into the golden thread.

Read our Gateway 3 checklist for the evidence that’s usually needed.

Practical steps for 2026

• Agree an Inspection and Test Plan for every safety-critical package before work starts.
• Record inspections at hold points with photos, location and drawing revision, ideally in a platform such as Field View.
• Track defects through non-conformance reports and close them out with evidence.
• Keep product data, installer competence and test certificates linked to each element.
• Build the O&M and handover information as you go, not in the last month.

Not every package needs a full-time QA manager on site. Many contractors get better results by setting up the records properly, then calling in an inspector at each hold point.

Need QA evidence you can rely on? Construction QA sets up your records, inspects at hold points anywhere in the UK and reports monthly or on request. See sample reports or book a visit.