Coleraine, County Londonderry
Single-storey rear extension in Coleraine
Thinking about a single-storey rear extension in Coleraine? Ground-floor space across the back of the house, usually for a kitchen, dining or family room. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
Coleraine is covered from our County Londonderry round, including BT52. A depth of 3 to 4 metres keeps many single-storey rear extensions in Coleraine within permitted development, subject to the house's planning history.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a single-storey rear extension cost in Coleraine?
Guide prices for a single-storey rear extension in Coleraine start from our Northern Ireland rate of £1,650–£2,700 per square metre, including VAT. Northern Ireland prices are the lowest in our range.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £20,000–£32,500 |
| 4 m wide × 5 m deep (20 m²) | £33,000–£54,000 |
| 4 m wide × 6 m deep (24 m²) | £39,500–£64,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a single-storey rear extension in Coleraine?
Whether your single-storey rear extension in Coleraine needs a planning application depends on its size, your house and any local restrictions.
Northern Ireland's permitted development rules allow a single-storey rear extension of 3 metres on terraced and semi-detached houses and 4 metres on detached houses, with a 4 metre height limit. Listed buildings, conservation areas and houses with removed rights need planning permission from the council.
Northern Ireland has no larger-extension prior approval route; anything beyond permitted development needs a planning application.
Conservation areas, Areas of Outstanding Natural Beauty and listed buildings restrict permitted development in Northern Ireland. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Coleraine like to extend?
Semis and detached houses are typical of Coleraine, and many have room for a rear extension within Northern Ireland's permitted development limits.
How a single-storey rear extension in Coleraine comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Paperwork handled
Planning or permitted development, building control approval, structural design and neighbour agreements are all handled by us.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Single-storey rear extensions near Coleraine
We also build single-storey rear extensions in nearby Portstewart (3.8 miles) and Limavady (12.6 miles).
- Single-storey rear extension in Portstewart
- Single-storey rear extension in Limavady
- Single-storey rear extension in Ballymena
- Single-storey rear extension in Magherafelt
- Single-storey rear extension in Derry~Londonderry
Other work in Coleraine:
FAQ
Single-storey rear extension questions in Coleraine
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Do you handle building control in Coleraine?
Yes. We apply to the council's building control team and hand over the completion certificate.
Can I stay in the house during the build?
Usually yes. The noisiest, dustiest stage, removing the back wall, is kept to the final weeks and screened off. Most families set up a temporary kitchen elsewhere in the house.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Do I need planning permission for a rear extension in Coleraine?
Often not for a single-storey rear extension of up to 3 metres (4 metres detached) under Northern Ireland's permitted development rules, outside conservation areas.
Can you match the brick or stone on my Coleraine house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.