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Free resources for trades
Plain-English guides to the rules that affect your work, for England and Wales. Free to read, no sign-up.
England and Wales each publish their own Approved Documents. Most parts exist in both, but Part N is Wales only, and Parts S and T are England only.
Structure Buildings stand up safely under the loads they carry.
Fire safety Escape routes, fire spread, detection and alarms, and access for firefighters.
Site preparation and moisture Damp, condensation, radon and contaminated ground.
Toxic substances Cavity wall insulation that could give off fumes.
Resistance to sound Sound insulation between homes and between rooms.
Ventilation Fresh air and extraction, including not making existing ventilation worse.
Sanitation, hot water safety and water efficiency Unvented hot water, scalding and water use in new homes.
Drainage and waste disposal Foul water, rainwater and soakaways.
Combustion appliances and fuel storage Boilers, flues, stoves, fuel storage and carbon monoxide alarms.
Protection from falling, collision and impact Stairs, guarding, ramps and glazing.
Conservation of fuel and power Energy efficiency, heating controls and commissioning, for new and existing buildings.
Access to and use of buildings Access for everyone, including socket and switch heights in new homes.
Glazing safety Wales onlySafe glazing, and windows that can be opened and cleaned safely. In England this is covered by Part K.
Overheating Limiting overheating in new homes.
Electrical safety Safe electrical work in homes, and when it must be notified.
Security Doors and windows that resist break-ins in new homes.
Broadband infrastructure Ducting and connections for fast broadband in new buildings.
EV charging England onlyCharge points and cabling for electric vehicles.
Toilet accommodation England onlyToilets in new non-domestic buildings.
Materials and workmanship Suitable materials, used in a workmanlike way, on every job.