Covering Cardiff
Our coverage around Cardiff (CF10, CF11, CF14) also includes Whitchurch, Penarth and Caerphilly.
Homes in South Glamorgan
Welsh homes include long terraces built into hillsides, stone cottages and modern estates, and sloping sites often shape how and where an extension can go.
What is included in a garage conversion in Cardiff?
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 check (some estates remove permitted development rights)
- Garage door removal and brick infill with window
- Plastering, skirting and decoration-ready finish
What is the guide price for a garage conversion in Cardiff?
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 |
Do you need permission for a garage conversion in Cardiff?
Welsh projects need planning clearance from the council under Welsh rules, building regulations approval under the Welsh approved documents, and party wall notices where the work affects a neighbour’s wall or foundations.
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 can affect a garage conversion?
- Some new-build estates have a planning condition keeping garages for parking.
- A bedroom needs an escape window or a protected route out.
What are the steps?
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
- Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
- Construction and completion. One site lead co-ordinates every trade through to the building control certificate.
What people ask before starting
Does it need building regulations approval?
Yes, because it becomes a habitable room.
Can a garage become a bedroom?
Yes, with insulation, ventilation and an escape window or protected route out.
Who deals with the council for a project in Cardiff?
We do. We prepare the drawings, submit planning or permitted development paperwork if needed, and arrange building control inspections.
Also covering
- Garage conversions in Whitchurch
- Garage conversions in Penarth
- Garage conversions in Caerphilly
- Garage conversions in Barry
Learn more about garage conversions, or see every project we cover in Cardiff.