Covering South Glamorgan
We cover South Glamorgan, including Cardiff, Barry, Penarth and Llantwit Major, and the towns around them.
Homes in South Glamorgan
Housing in Wales ranges from terraced streets in the valleys and older industrial towns to stone-built homes in rural areas and modern estates around the cities.
What do you get with a garage conversion?
A garage conversion turns an attached, integral or detached garage into a habitable room by infilling the door opening, insulating the floor, walls and roof, and adding windows, heating and power. It is one of the quickest and cheapest ways to add a room.
- Planning and building regulations checks under Welsh rules
- Building control application
- Plastering, skirting and decoration-ready finish
What will a garage conversion cost?
What garage conversions typically cost. These are guide ranges; the written quote for your house replaces them.
| Garage conversions | Guide price incl. VAT |
|---|---|
| Single integral garage | £12,000 to £17,000 |
| Single attached garage | £12,000 to £24,000 |
| Single detached garage | £18,000 to £30,000 |
| Double garage | £25,000 to £54,000 |
How is a garage conversion approved in South Glamorgan?
In Wales the planning rules, including what counts as permitted development, are set by the Welsh Government, and Welsh building regulations differ in places from England’s. We check both against your house before drawings are finalised, and handle party wall notices where needed.
In Wales, converting an attached garage usually does not need planning permission unless rights have been removed by condition or the building is listed.
What should South Glamorgan homeowners check first?
- The garage floor is often lower than the house and needs raising.
- A bedroom needs an escape window or a protected route out.
From first call to completion
- Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
- Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.
What people ask before starting
How long does a garage conversion take?
About 2 to 5 weeks on site.
Can a garage become a bedroom?
Yes, with insulation, ventilation and an escape window or protected route out.
How do I get a price for garage conversions in South Glamorgan?
Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.
Also covering
- Garage conversions in Cardiff
- Garage conversions in Barry
- Garage conversions in Penarth
- Garage conversions in Llantwit Major
- Garage conversions in Whitchurch
- Garage conversions in Cowbridge
Learn more about garage conversions, or see every project we cover in South Glamorgan.

