Covering Coleraine
Our coverage around Coleraine (BT51, BT52) also includes Portrush (4 miles to the north) and Ballymoney.
Homes in County Londonderry
Northern Ireland has a high proportion of detached houses and bungalows outside the cities, which often suit side extensions, rear extensions and upward extensions.
What is included in a garage conversion in Coleraine?
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 control applications to the council
- Insulated floor, walls and ceiling
- Plastering, skirting and decoration-ready finish
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 |
How is a garage conversion approved in Coleraine?
In Northern Ireland the council handles both planning and building control. Permitted development rules are set by the Planning (General Permitted Development) Order (Northern Ireland) 2015, and there is no party wall act, so we agree access and protection with neighbours in writing.
In Northern Ireland, garage conversions often do not need planning permission if the external changes are minor; building control approval is needed.
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.
How does the project run?
- 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.
Questions about a garage conversion in Coleraine
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.
Does it need building regulations approval?
Yes, because it becomes a habitable room.
How do I get a price for garage conversions in Coleraine?
Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.
Other towns nearby
- Garage conversions in Portrush
- Garage conversions in Ballymoney
- Garage conversions in Limavady
- Garage conversions in Ballymena
Learn more about garage conversions, or see every project we cover in Coleraine.

