Covering Ballymoney
Our coverage around Ballymoney (BT53) also includes Coleraine, Portrush and Ballymena.
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 does a mansard loft conversion involve?
Mansards are a bigger structural job than other conversions because the roof is largely rebuilt. They normally need planning permission, and many councils have design guides setting the angle, materials and window style. We prepare the design to those guides and build in slate, lead and timber or approved alternatives.
- Planning and building control applications to the council
- Roof removal and new mansard frame
- Slate cladding and lead-clad dormers
How much should I budget for a mansard loft conversion?
What mansard loft conversions typically cost. These are guide ranges; the written quote for your house replaces them.
| Mansard loft conversions | Guide price incl. VAT |
|---|---|
| Rear mansard | £65,000 to £85,000 |
| Front and rear (double) mansard | £80,000 to £110,000 |
Do you need permission for a mansard loft conversion in Ballymoney?
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.
This needs full planning permission from the council in Northern Ireland, plus building control approval.
What should Ballymoney homeowners check first?
- The roof is open for longer than with a dormer, so weather protection matters.
- Council design guides often require natural slate and lead.
What happens after I enquire?
- Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
- 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 mansard loft conversion in Ballymoney
How much does a mansard loft conversion cost?
Typically £65,000 to £110,000 including VAT, depending on whether one or both roof slopes are rebuilt.
How long does a mansard take?
Around 10 to 14 weeks on site after planning approval.
Do you work in Ballymoney?
Yes. Ballymoney is within our coverage for mansard loft conversions, along with nearby Coleraine and Portrush.
Other towns nearby
- Mansard loft conversions in Coleraine
- Mansard loft conversions in Portrush
- Mansard loft conversions in Ballymena
- Mansard loft conversions in Limavady
Learn more about mansard loft conversions, or see every project we cover in Ballymoney.

