Lisburn, County Antrim
Wraparound extension in Lisburn
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 Lisburn and the surrounding area, with one contract from the first survey to building control sign-off.
Lisburn sits in County Antrim, with postcode districts including BT17, BT27 and BT28. Wraparounds are the natural next step for the end-of-terrace and Victorian houses in County Antrim 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 Lisburn?
In Lisburn, our guide for a wraparound extension is £1,910–£3,130 per square metre including VAT for a 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 |
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 wraparound extension in Lisburn?
Planning for a wraparound extension in Lisburn follows the Northern Irish householder rules.
Northern Ireland's rules restrict side extensions more than rear ones, so a side infill or wraparound usually needs a planning application to the council as well as building control approval.
There is no Party Wall Act in Northern Ireland; we agree any work affecting a shared wall or boundary directly with the neighbour, in writing.
Conservation areas, Areas of Outstanding Natural Beauty and listed buildings restrict permitted development in Northern Ireland. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Lisburn like to extend?
Lisburn has terraces near the centre, semis on the edges and many detached houses and bungalows in the surrounding countryside, where plots are often generous. In Lisburn we usually draw the wraparound and a simpler rear-only option side by side, so the planning risk and cost difference are clear.
How a wraparound extension in Lisburn 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.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for council building control.
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 Lisburn
Close by, we work in Belfast, about 6.7 miles away, and Castlereagh, about 7.0 miles away.
- Wraparound extension in Belfast
- Wraparound extension in Castlereagh
- Wraparound extension in Dundonald
- Wraparound extension in Newtownabbey
- Wraparound extension in Holywood
Other work in Lisburn:
FAQ
Wraparound extension questions in Lisburn
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.
How long does a rear extension take to build in Lisburn?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.
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.
How much does a wraparound extension cost in Lisburn?
As a guide, £1,910–£3,130 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £42,000–£69,000 at that rate. Your written price follows the survey.
Is the site visit in Lisburn free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.