Wales sets July 2026 for Building Safety Act powers
From 1 July 2026, Wales will switch on new powers under the Building Safety Act 2022. The Welsh Government has made the Commencement No. 6 (Wales) Regulations 2025 to activate several Part 3 provisions, moving Wales into a clearer, stricter enforcement phase for building work.
Here’s the simple idea you can teach in one line: if work breaks building rules, authorities in Wales will have clearer tools to make you fix it or stop it. Those tools now include compliance notices and stop notices written into the Building Act 1984 by the UK Act, but commencing for Welsh use from July 2026.
A compliance notice is a formal letter from a building control authority telling you what breach has occurred and the steps you must take by a set date. Not following a compliance notice without a reasonable excuse is a criminal offence. Think of it as a remedy-by-deadline instruction, grounded in section 35B of the Building Act.
A stop notice can halt specified work immediately or from a stated time. It can be used if a prescribed rule would be broken, if a compliance notice has been ignored, or if non‑compliant work poses a ‘risk of serious harm’ if the building were used. Breaching a stop notice is an offence. This is set out in sections 35C and 35D.
What this means for you in Wales: if you receive a compliance or stop notice, your appeal goes to a magistrates’ court, not to the First‑tier Tribunal used in England. The Act calls this the “appropriate court or tribunal”, and for Wales that means the magistrates’ court, usually within 21 days of service.
Another July 2026 change is about time limits and consequences. Breaching building regulations becomes a tougher criminal offence, triable either way, with penalties up to two years’ imprisonment or an unlimited fine. The window for councils to require defective work to be removed or altered will extend to ten years.
You’ll also see a new expiry principle for permissions that sit on the shelf. Building control approvals, initial notices and some public body notices will lapse if work on the relevant building does not start within three years. This prevents indefinite ‘banking’ of approvals and mirrors planning’s familiar time‑limit logic.
Who actually uses these powers in Wales? Building work is overseen by local authorities or registered building control approvers; only local authorities can oversee new higher‑risk building work. The Building Safety Regulator supports Welsh Ministers in regulating the profession but does not oversee building work in Wales.
Higher‑risk buildings during design and construction are defined in Welsh regulations as those at least 18 metres or seven storeys and containing at least one residential unit, or a hospital, care home or children’s home, with specific exclusions. Knowing this helps you spot when stricter controls apply.
If a local authority fails to decide certain applications on time, applicants will be able to ask the Welsh Ministers to determine them-another July 2026 switch‑on that keeps decisions moving. And if a local authority persistently underperforms on safety, Welsh Ministers have default powers to step in.
What it means in practice for learners, site teams and homeowners: keep a clean audit trail of plans, correspondence and inspections; expect clearer letters that say what’s wrong and how to fix it; and know your right to appeal in Wales is through the magistrates’ court. This is about getting problems corrected before people are put at risk.
Context for your timeline: Wales has been phasing in the Act since 2023, bringing in competence rules, registers for inspectors and approvers, and the Welsh higher‑risk building definition. July 2026 is the next big checkpoint when enforcement powers go live for Welsh bodies.