Castlereagh, County Down
Bungalow rear extension in Castlereagh
Bungalow rear extension in Castlereagh: single-storey rear extensions that keep everything on one level. We measure the house, show you what the rules allow, price it in writing and build it.
We cover Castlereagh (BT8) as part of our County Down work. For bungalows in County Down, a rear extension is the usual way to add space without adding stairs.
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 bungalow rear extension cost in Castlereagh?
A bungalow rear extension in Castlereagh is priced at £1,610–£2,610 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 m deep (12 m²) | £19,500–£31,500 |
| 4 m wide × 6 m deep (24 m²) | £38,500–£62,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a bungalow rear extension in Castlereagh?
Planning for a bungalow rear extension in Castlereagh follows the Northern Irish householder rules.
Northern Ireland's permitted development rules allow a single-storey rear extension of 3 metres on terraced and semi-detached houses and 4 metres on detached houses, with a 4 metre height limit. Listed buildings, conservation areas and houses with removed rights need planning permission from the council.
Northern Ireland has no larger-extension prior approval route; anything beyond permitted development needs a planning application.
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 Castlereagh like to extend?
Castlereagh 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 bungalow rear extension in Castlereagh 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.
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.
Bungalow rear extensions near Castlereagh
We also build rear extensions for bungalows in nearby Belfast (2.3 miles) and Dundonald (3.7 miles).
- Bungalow rear extension in Belfast
- Bungalow rear extension in Dundonald
- Bungalow rear extension in Holywood
- Bungalow rear extension in Newtownabbey
- Bungalow rear extension in Lisburn
Other work in Castlereagh:
FAQ
Bungalow rear extension questions in Castlereagh
How long does a rear extension take to build in Castlereagh?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do you handle building control in Castlereagh?
Yes. We apply to the council's building control team and hand over the completion certificate.
Do I need to move out?
Rarely; the opening into the bungalow is made late in the build.
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 postcode areas do you cover around Castlereagh?
Including BT8, and the surrounding County Down area.