Covering Carmarthen
We work in Carmarthen (SA31) and the places around it, including Llanelli, Ammanford and Pontarddulais.
Homes in Dyfed
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 goes into a garage conversion?
Most integral garages already have the walls and roof; what they need is a new insulated floor, an infilled front wall with a window, and heating. We check whether your permitted development rights are intact, handle building control and finish the room ready to use.
- Planning and building regulations checks under Welsh rules
- Garage door removal and brick infill with window
- Insulated floor, walls and ceiling
How much should I budget for a garage conversion?
Guide prices for garage conversions, including VAT where it applies. Your fixed price is confirmed in writing after the survey.
| 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 Carmarthen?
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 I think about before starting?
- A bedroom needs an escape window or a protected route out.
- Losing a parking space can matter on streets with permit parking.
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.
- Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
- Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
- We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.
Your questions answered
How much does a garage conversion cost?
A single integral garage usually costs about £12,000 to £17,000 including VAT. Detached and double garages cost more.
Do I need planning permission for a garage conversion?
Usually not if the work is internal and your permitted development rights are intact. Some estates remove those rights, so we check.
How do I get a price for garage conversions in Carmarthen?
Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.
Garage conversions in nearby towns
- Garage conversions in Llanelli
- Garage conversions in Ammanford
- Garage conversions in Pontarddulais
- Garage conversions in Tenby
Learn more about garage conversions, or see every project we cover in Carmarthen.

