Carrickfergus, County Antrim
Terraced house rear extension in Carrickfergus
For homes in Carrickfergus, a terraced house rear extension is often the simplest way to gain space without moving. Rear and side return extensions for terraces, with access through the house and two neighbours. We take it from survey to completion certificate.
Carrickfergus and its postcode districts BT38 are part of our County Antrim coverage. In Carrickfergus we plan the delivery route through the house and the skip licence before anything else.
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 Carrickfergus?
Guide prices for a terraced house rear extension in Carrickfergus start from our Northern Ireland rate of £1,780–£2,870 per square metre, including VAT. 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 |
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 terraced house rear extension in Carrickfergus?
The planning route for a terraced house rear extension in Carrickfergus is set by Northern Ireland's householder rules and your council.
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.
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 Carrickfergus like to extend?
Semis and detached houses are typical of Carrickfergus, and many have room for a rear extension within Northern Ireland's permitted development limits.
How a terraced house rear extension in Carrickfergus 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.
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.
Terraced house rear extensions near Carrickfergus
Close by, we work in Holywood, about 5.4 miles away, and Newtownabbey, about 5.6 miles away.
- Terraced house rear extension in Holywood
- Terraced house rear extension in Newtownabbey
- Terraced house rear extension in Bangor
- Terraced house rear extension in Dundonald
- Terraced house rear extension in Larne
Other work in Carrickfergus:
FAQ
Terraced house rear extension questions in Carrickfergus
Do I need planning permission for a rear extension in Carrickfergus?
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.
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.
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 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.
How long does a rear extension take to build in Carrickfergus?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
How much does a terraced house rear extension cost in Carrickfergus?
As a guide, £1,780–£2,870 per square metre including VAT for a standard specification. For example, 3 m wide × 4.5 m deep (13.5 m²): about £24,000–£39,000 at that rate. Your written price follows the survey.