Antrim, County Antrim
Side return extension in Antrim
Side return extension in Antrim: infilling the narrow passage beside a Victorian or Edwardian back addition. We measure the house, show you what the rules allow, price it in writing and build it.
Antrim is covered from our County Antrim round, including BT41. In Antrim we check the boundary line and the neighbour's gutter before drawing a side return, because a few centimetres decide whether the wall goes on or beside the boundary.
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 side return extension cost in Antrim?
A side return extension in Antrim is priced at £2,000–£3,310 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 |
|---|---|
| 2 m wide × 6 m deep (12 m²) | £24,000–£39,500 |
| 2.5 m wide × 7 m deep (17.5 m²) | £35,000–£58,000 |
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 side return extension in Antrim?
Whether your side return extension in Antrim 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. At the first visit we measure what is there now and tell you which route fits: permitted development or a planning application.
What are homes in Antrim like to extend?
Semis and detached houses are typical of Antrim, and many have room for a rear extension within Northern Ireland's permitted development limits.
How a side return extension in Antrim 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.
Paperwork handled
Planning or permitted development, building control approval, structural design and neighbour agreements are all handled by us.
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.
Side return extensions near Antrim
We also build side return extensions in nearby Ballymena (10.4 miles) and Newtownabbey (12.7 miles).
- Side return extension in Ballymena
- Side return extension in Newtownabbey
- Side return extension in Belfast
- Side return extension in Lisburn
- Side return extension in Magherafelt
Other work in Antrim:
FAQ
Side return extension questions in Antrim
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.
How much space does a side return add?
Typically 8 to 18 square metres, enough to turn a galley kitchen into a kitchen-diner with an island.
How much does a side return extension cost in Antrim?
As a guide, £2,000–£3,310 per square metre including VAT for a standard specification. For example, 2 m wide × 6 m deep (12 m²): about £24,000–£39,500 at that rate. Your written price follows the survey.
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.
What postcode areas do you cover around Antrim?
Including BT41, and the surrounding County Antrim area.