Ballymena, County Antrim
Two-storey rear extension in Ballymena
Thinking about a two-storey rear extension in Ballymena? A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
We cover Ballymena (BT42 and BT43) as part of our County Antrim work. In Ballymena, a two-storey rear extension is worth comparing with the cost of moving once stamp duty, agents' and legal fees are counted.
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 two-storey rear extension cost in Ballymena?
In Ballymena, our guide for a two-storey rear extension is £1,570–£2,350 per square metre including VAT for a standard specification. Northern Ireland prices are the lowest in our range.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £47,000–£70,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £75,000–£113,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a two-storey rear extension in Ballymena?
Whether your two-storey rear extension in Ballymena needs a planning application depends on its size, your house and any local restrictions.
In Northern Ireland a rear extension of more than one storey can be permitted development if it projects no more than 3 metres and stays at least 7 metres from the rear boundary. Two-storey extensions in conservation areas, and most larger schemes, need planning permission from the council.
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 Ballymena like to extend?
Ballymena 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 two-storey rear extension in Ballymena comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning or permitted development, building control approval, structural design and neighbour agreements are all handled by us.
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.
Two-storey rear extensions near Ballymena
Close by, we work in Antrim, about 10.4 miles away, and Magherafelt, about 15.2 miles away.
- Two-storey rear extension in Antrim
- Two-storey rear extension in Magherafelt
- Two-storey rear extension in Larne
- Two-storey rear extension in Newtownabbey
- Two-storey rear extension in Carrickfergus
Other work in Ballymena:
FAQ
Two-storey rear extension questions in Ballymena
What postcode areas do you cover around Ballymena?
Including BT42 and BT43, and the surrounding County Antrim area.
Do you handle building control in Ballymena?
Yes. We apply to the council's building control team and hand over the completion certificate.
Will we need to move out?
Rarely. The first-floor opening is made late in the job and sealed with temporary screens.
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.
Do I need planning permission for a rear extension in Ballymena?
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.
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.