What is a wraparound extension?
A wraparound extension combines a side return and a rear extension into one L-shaped addition. It gives the largest possible ground floor, often creating an open-plan kitchen, dining and living space across the whole width of the house.
How much does a wraparound extension cost in Coleraine?
In Coleraine, a wraparound extension typically costs £1,900–£2,750 per m² of floor area, including VAT at 20% (standard rate). For a typical 28 m² project that is roughly £53,000–£77,000. Prices across Northern Ireland are typically 14% below the UK average for this kind of work, which is reflected in the range for Coleraine. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (20 m²) | £38,000–£55,000 |
| Typical project (28 m²) | £53,000–£77,000 |
| Larger project (39 m²) | £74,000–£107,000 |
| Rate per m² | £1,900–£2,750 |
Your quote will depend mainly on:
- Drainage changes
- Access for materials on terraced streets
- Kitchen and flooring specification
- Total footprint and the amount of glazing
A guide range is only a starting point: the guide price tool gives an instant figure for your size, and a free survey turns it into a fixed quote.
Do you need planning permission for a wraparound extension in Coleraine?
Here is how the rules work for a wraparound extension in Northern Ireland. In Northern Ireland a wraparound extension normally needs planning permission and building control approval.
In Northern Ireland building control approval comes from the council, usually through a full plans application or a building notice, with inspections during the work and a completion certificate at the end.
If the answer is not clear-cut, we can apply for formal confirmation before you commit to the build.
What we handle
What we take care of:
- Structural engineer’s design for steels and supports
- Removal of internal and external walls
- Design and planning application
- Underfloor heating option, electrics and plastering
- Building control completion
- Written agreement with neighbours on shared walls
How long does it take?
The build itself usually takes 12 to 18 weeks on site. Design and approvals come first and typically take 3 to 4 months, depending on the approval route.
Building in Coleraine
Across Northern Ireland, bungalows and chalet bungalows are common, so loft conversions and rear extensions are popular projects.
Our Coleraine coverage includes postcode districts BT51 and BT52, and we also work in nearby places such as Limavady, Ballymena and Magherafelt.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Design and pricing
Design options, then a fixed quote based on the chosen drawings and specification.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions about wraparound extensions in Coleraine
Is a wraparound worth it?
It gives the biggest ground-floor space without going upwards. Whether it adds value depends on your street and house, so we suggest checking local sale prices before committing.
Do you build wraparound extensions in Coleraine?
Yes. We build wraparound extensions across Coleraine, including postcodes BT51 and BT52. Every project starts with a free home visit.
How much does a wraparound extension cost in Coleraine?
In Coleraine, a wraparound extension typically costs £1,900–£2,750 per m² of floor area, including VAT at 20% (standard rate). A typical 28 m² project comes to roughly £53,000–£77,000. Your fixed price depends on the survey and drawings.
What about the old back addition?
The side wall of the back addition is usually removed and replaced with a steel beam, so the old kitchen joins the new space.
Do I need planning permission for a wraparound extension in Coleraine?
In Northern Ireland a wraparound extension normally needs planning permission and building control approval.
Can we keep a separate living room?
Yes. Many clients keep the front room separate and open up only the back of the house.