Covering Lisburn
We work in Lisburn (BT27, BT28) and the places around it, including Belfast, Newtownabbey and Holywood.
Homes in County Antrim
Across Northern Ireland you find city terraces, suburban semis and rural bungalows and farmhouses, so the right approach depends on the plot and the planning history.
What do you get with a hip-to-gable loft conversion?
A hip-to-gable loft conversion rebuilds the sloping side (the hip) of a semi-detached or detached house roof as a vertical gable wall, extending the ridge and creating enough space for a staircase and rooms. It is usually combined with a rear dormer.
- Gable wall build in brick, block or render
- Extended ridge and roof structure
- En-suite and fire-protected escape route
What will a hip-to-gable loft conversion cost?
What hip-to-gable loft conversions typically cost. These are guide ranges; the written quote for your house replaces them.
| Hip-to-gable loft conversions | Guide price incl. VAT |
|---|---|
| Hip-to-gable with rear dormer | £60,000 to £80,000 |
| Double hip-to-gable (detached house) | £70,000 to £95,000 |
Planning and building rules in Lisburn
Northern Ireland projects need planning clearance and building control approval from the local council. We prepare the applications and agree any work near neighbouring property directly with the neighbours.
In Northern Ireland, roof enlargements such as dormers often need planning permission depending on size and position.
What can change the price or programme?
- The new gable is usually rendered or built in matching brick.
- Scaffolding goes up on the side of the house, which may need a neighbour’s agreement.
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.
- 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.
- 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 hip-to-gable loft conversion cost?
Usually £60,000 to £80,000 including VAT with a rear dormer, more on a detached house with two hips.
Will the roof tiles match?
We match the tiles as closely as possible, using reclaimed tiles where the originals are no longer made.
How do I get a price for hip-to-gable loft conversions in Lisburn?
Use the guide price tool for a ballpark figure, then book a visit for a fixed written price for the agreed specification.
Hip-to-gable loft conversions near Lisburn
- Hip-to-gable loft conversions in Belfast
- Hip-to-gable loft conversions in Newtownabbey
- Hip-to-gable loft conversions in Holywood
- Hip-to-gable loft conversions in Comber
Learn more about hip-to-gable loft conversions, or see every project we cover in Lisburn.

