Banbridge, County Down
Two-storey rear extension in Banbridge
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. If you live in Banbridge and want to know what a two-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Banbridge is covered from our County Down round, including BT32. In Banbridge, 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 Banbridge?
Guide prices for a two-storey rear extension in Banbridge start from our Northern Ireland rate of £1,570–£2,350 per square metre, including VAT. 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 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a two-storey rear extension in Banbridge?
Planning for a two-storey rear extension in Banbridge follows the Northern Irish householder rules.
Northern Ireland's 2015 Order allows a two-storey rear extension of up to 3 metres where at least 7 metres is left to the rear boundary. Anything larger, or in a conservation area, needs a planning application to the council.
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 Banbridge like to extend?
Semis and detached houses are typical of Banbridge, and many have room for a rear extension within Northern Ireland's permitted development limits.
How a two-storey rear extension in Banbridge 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.
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.
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.
Two-storey rear extensions near Banbridge
Close by, we work in Craigavon, about 7.9 miles away, and Portadown, about 8.2 miles away.
- Two-storey rear extension in Craigavon
- Two-storey rear extension in Portadown
- Two-storey rear extension in Newry
- Two-storey rear extension in Armagh
- Two-storey rear extension in Lisburn
Other work in Banbridge:
FAQ
Two-storey rear extension questions in Banbridge
Can you match the brick or stone on my Banbridge house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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.
Is two-storey cheaper per square metre than single-storey?
Usually yes, because the foundations and roof are shared across twice the floor area. The total cost is higher.
How long does a rear extension take to build in Banbridge?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
How much does a two-storey rear extension cost in Banbridge?
As a guide, £1,570–£2,350 per square metre including VAT for a standard specification. For example, 3 m × 5 m footprint, two floors (30 m²): about £47,000–£70,500 at that rate. Your written price follows the survey.