Downpatrick, County Down
Terraced house rear extension in Downpatrick
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Downpatrick and want to know what a terraced house rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Downpatrick is covered from our County Down round, including BT30. Terraced streets make up much of the housing in parts of County Down, and most rear extensions here go in without side access.
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 terraced house rear extension cost in Downpatrick?
A terraced house rear extension in Downpatrick is priced at £1,780–£2,870 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 |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £24,000–£39,000 |
| 3 m wide × 6 m deep (18 m²) | £32,000–£51,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a terraced house rear extension in Downpatrick?
Whether your terraced house rear extension in Downpatrick needs a planning application depends on its size, your house and any local restrictions.
In Northern Ireland the Planning (General Permitted Development) Order (Northern Ireland) 2015 allows a single-storey rear extension of up to 3 metres on an attached house or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary. Building control approval from the council is still required.
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 Downpatrick like to extend?
Downpatrick 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 terraced house rear extension in Downpatrick 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
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.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Terraced house rear extensions near Downpatrick
Neighbouring places we cover include Castlereagh (18.3 miles) and Newtownards (18.3 miles).
- Terraced house rear extension in Castlereagh
- Terraced house rear extension in Newtownards
- Terraced house rear extension in Dundonald
- Terraced house rear extension in Lisburn
- Terraced house rear extension in Belfast
Other work in Downpatrick:
FAQ
Terraced house rear extension questions in Downpatrick
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 long does a rear extension take to build in Downpatrick?
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 you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
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.
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.
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.