Portstewart, County Londonderry
Wraparound extension in Portstewart
For homes in Portstewart, a wraparound extension is often the simplest way to gain space without moving. An L-shaped extension that fills the side return and runs across the back. We take it from survey to completion certificate.
Portstewart sits in County Londonderry, with postcode districts including BT55. Wraparounds are the natural next step for the end-of-terrace and Victorian houses in County Londonderry where a side return alone would leave the room too narrow.
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 Portstewart?
A wraparound extension in Portstewart 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 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a wraparound extension in Portstewart?
Whether your wraparound extension in Portstewart 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 Portstewart like to extend?
Portstewart has terraces near the centre, semis on the edges and many detached houses and bungalows in the surrounding countryside, where plots are often generous.
How a wraparound extension in Portstewart 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.
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 Portstewart
Neighbouring places we cover include Coleraine (3.8 miles) and Limavady (13.0 miles).
- Wraparound extension in Coleraine
- Wraparound extension in Limavady
- Wraparound extension in Derry~Londonderry
- Wraparound extension in Ballymena
- Wraparound extension in Magherafelt
Other work in Portstewart:
FAQ
Wraparound extension questions in Portstewart
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Do I need planning permission for a rear extension in Portstewart?
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.
How long does a wraparound take?
Usually 14 to 20 weeks on site, longer than a plain rear extension because of the steelwork.
Is the site visit in Portstewart free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How long does a rear extension take to build in Portstewart?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.