Covering Lisburn
Our coverage around Lisburn (BT27, BT28) also includes Belfast, Newtownabbey and Holywood.
Homes in County Antrim
Housing in Northern Ireland mixes terraces in Belfast and Derry with detached houses and bungalows in towns and rural areas, many with room to extend.
What is 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 control applications to the council
- Building control application
- Heating, electrics and data points
How much does a garage conversion cost in Lisburn?
Typical ranges for garage conversions. Ground conditions, access and specification move the final figure, which we fix in writing before work starts.
| 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 |
What approvals does a garage conversion need in Northern Ireland?
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 can change the price or programme?
- The garage floor is often lower than the house and needs raising.
- A bedroom needs an escape window or a protected route out.
What happens after I enquire?
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- 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 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.
How long does a garage conversion take?
About 2 to 5 weeks on site.
Can you visit a house in Lisburn to quote?
Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.
Garage conversions in nearby towns
- Garage conversions in Belfast
- Garage conversions in Newtownabbey
- Garage conversions in Holywood
- Garage conversions in Comber
Learn more about garage conversions, or see every project we cover in Lisburn.

