Planning permission
Converting a garage usually does not need planning permission, as long as the work is internal and does not enlarge the building. Check first if:
- your home is on a newer estate, where permitted development rights for garage conversions are sometimes removed by a planning condition;
- you live in a conservation area or a listed building;
- you want to create a separate home, such as an annexe to rent out; or
- you live in a flat or maisonette.
Building Regulations
A garage conversion will normally need Building Regulations approval, because a garage is not built to the same standard as a habitable room. Typical areas include:
- Filling in the garage door opening with a new wall, with suitable foundations.
- Insulating the floor, walls and ceiling, and dealing with damp.
- Ventilation and windows.
- Fire safety, including escape routes.
- Electrics, heating and any drainage.
Things to plan for
- Floor level: garage floors are often lower than the house, so the floor may need raising.
- Parking: some councils and estates have rules about keeping off-street parking. Check before you start.
- The front of the house: choose a new window and wall finish that matches the rest of the house.
- Storage: think about where bikes, tools and garden equipment will go.
Next steps
Ask a builder who has done garage conversions before to look at your garage, and agree who will deal with Building Control. See also what to include in a builder contract.
Wales, Scotland and Northern Ireland have their own building rules. This guide covers England; elsewhere in the UK, check with your local council.
Last updated: 14 October 2026
