Covering Coleraine
Our coverage around Coleraine (BT51, BT52) also includes Portrush, Ballymoney and Limavady.
Homes in County Londonderry
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 do you get with an upward extension?
An upward extension adds a new storey on top of an existing house, most often turning a bungalow into a two-storey or chalet-style home. It can double the floor area without using any of the garden.
- Planning and building control applications to the council
- New first-floor structure, walls and roof
- Staircase and changes to the ground floor layout
How much does an upward extension cost in Coleraine?
Use these ranges to budget for bungalow and upward extensions; the survey turns them into a fixed price for the agreed specification.
| Bungalow and upward extensions | Guide price incl. VAT |
|---|---|
| Chalet conversion with dormers (total) | £45,000 to £85,000 |
| New first floor, standard specification | £2,200 to £2,800 per m² |
| New first floor, good specification | £2,800 to £3,300 per m² |
| New first floor, high specification | £3,300 to £3,800 per m² |
How is an upward extension approved in Coleraine?
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.
Adding a storey in Northern Ireland needs planning permission and building control approval.
What should Coleraine homeowners check first?
- The staircase takes space from the ground floor plan.
- Neighbours’ light and privacy are the main planning tests.
From first call to completion
- 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.
- Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
- 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
Do we need to move out?
Often for part of the job, while the roof is off and the new floor is formed. We plan this with you.
How long does it take?
About 12 to 24 weeks on site.
Who deals with the council for a project in Coleraine?
We do. We prepare the drawings, submit planning or permitted development paperwork if needed, and arrange building control inspections.
Bungalow and upward extensions near Coleraine
- Bungalow and upward extensions in Portrush
- Bungalow and upward extensions in Ballymoney
- Bungalow and upward extensions in Limavady
- Bungalow and upward extensions in Ballymena
Learn more about bungalow and upward extensions, or see every project we cover in Coleraine.

