Dundonald, County Down
Wraparound extension in Dundonald
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 Dundonald and the surrounding area, with one contract from the first survey to building control sign-off.
Dundonald and its postcode districts BT16 are part of our County Down coverage. In Dundonald 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 Dundonald?
For Dundonald we work from the Northern Ireland rate: £1,910–£3,130 per square metre of new floor, including VAT, standard specification. 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 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a wraparound extension in Dundonald?
Whether your wraparound extension in Dundonald 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 Dundonald like to extend?
Semis and detached houses are typical of Dundonald, and many have room for a rear extension within Northern Ireland's permitted development limits.
How a wraparound extension in Dundonald comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
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.
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.
Wraparound extensions near Dundonald
From Dundonald, the nearest places we also cover are Holywood (3.4 miles) and Castlereagh (3.7 miles).
- Wraparound extension in Holywood
- Wraparound extension in Castlereagh
- Wraparound extension in Newtownards
- Wraparound extension in Belfast
- Wraparound extension in Newtownabbey
Other work in Dundonald:
FAQ
Wraparound extension questions in Dundonald
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.
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.
Is it worth it over a side return alone?
If you want a dining table and a sofa as well as the kitchen, usually yes.
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.
Do I need planning permission for a rear extension in Dundonald?
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.
Do you handle building control in Dundonald?
Yes. We apply to the council's building control team and hand over the completion certificate.