Self-Assessment Tools
Practical checkers for everyday compliance questions.
A small, growing series of single-purpose tools that walk you through one Building Regulations question at a time. Pick a tool, answer a few questions, get a clear indicative result with citations and the likely next step.
Tools
Is it building work?
Walks you through the nine sub-clauses of Regulation 3, the material-alteration test in Reg 3(2)/(3), and the change-of-use test in Reg 5. Tells you whether your scope needs Building Control approval.
CPS · liveCan my installer self-certify?
Tells you whether your installer can certify their own work under a Competent Person Scheme (Gas Safe, NICEIC, MCS, FENSA, HETAS, OFTEC, REFCOM, etc.) or whether you still need to involve Building Control.
PCI checker
Pre-Construction Information requirements under CDM 2015 Reg 4 — what the Principal Designer must capture and pass on to the Principal Contractor.
Fire info at handover
What fire safety information must be passed to the Responsible Person on completion of a building project (BR 2010 Reg 38, post-Grenfell amendments).
Design principles
- Single-purpose. Each tool answers one question well, not many questions vaguely.
- Standalone. Each tool is one HTML file with no framework, CDN, or build step. Saves cleanly to disk and works offline.
- Mobile-first. Built for use on site, on a phone, with your hands cold.
- Plain English + citations. Result pages tell you what to do next AND show you the regulatory source you can verify yourself.
- Indicative only. These are not legal advice and not a determination by a Building Control Body. They help you ask the right question; a qualified professional answers it.
- No tracking, no cookies, no analytics. Nothing is sent anywhere. Open source, MIT licensed.