Derry~Londonderry, County Londonderry
Wraparound extension in Derry~Londonderry
An L-shaped extension that fills the side return and runs across the back. We design, get the approvals for and build wraparound extensions in Derry~Londonderry and the surrounding area, with one contract from the first survey to building control sign-off.
Derry~Londonderry and its postcode districts BT48 are part of our County Londonderry coverage. In Derry~Londonderry we usually draw the wraparound and a simpler rear-only option side by side, so the planning risk and cost difference are clear.
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 wraparound extension cost in Derry~Londonderry?
A wraparound extension in Derry~Londonderry is priced at £1,910–£3,130 per square metre including VAT as a guide, before kitchen fit-out and fees. Northern Ireland prices are the lowest in our range.
| Size | Guide price inc VAT |
|---|---|
| L-shaped, about 22 m² of new floor | £42,000–£69,000 |
| L-shaped, about 30 m² of new floor | £57,500–£94,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a wraparound extension in Derry~Londonderry?
Whether your wraparound extension in Derry~Londonderry needs a planning application depends on its size, your house and any local restrictions.
In Northern Ireland side extensions that face a road, or go beyond permitted development limits, need planning permission from the council, and most wraparounds go through a planning application.
Northern Ireland has no Party Wall Act. Shared-wall work relies on agreement with your neighbour and the general law, so we put access and protection arrangements in writing before starting.
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 Derry~Londonderry like to extend?
Semis and detached houses are typical of Derry~Londonderry, and many have room for a rear extension within Northern Ireland's permitted development limits.
How a wraparound extension in Derry~Londonderry 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Approvals
Permitted development check or planning application, then building control drawings to the Northern Ireland Technical Booklets and structural calculations, plus a written agreement with neighbours for any shared-wall work.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Wraparound extensions near Derry~Londonderry
We also build wraparound extensions in nearby Strabane (13.6 miles) and Limavady (14.7 miles).
- Wraparound extension in Strabane
- Wraparound extension in Limavady
- Wraparound extension in Portstewart
- Wraparound extension in Coleraine
- Wraparound extension in Omagh
Other work in Derry~Londonderry:
FAQ
Wraparound extension questions in Derry~Londonderry
Do I need a party wall agreement?
Northern Ireland has no Party Wall Act; we agree any shared-wall work with your neighbour in writing.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
What roof suits a wraparound?
A flat roof with a lantern, a standing-seam pitched roof or a glazed roof over the side leg. The choice usually follows the first-floor windows above.
What postcode areas do you cover around Derry~Londonderry?
Including BT48, and the surrounding County Londonderry area.
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 I need planning permission for a rear extension in Derry~Londonderry?
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.