County Antrim
Rear extensions for bungalows in County Antrim
Single-storey rear extensions that keep everything on one level. We design and build rear extensions across County Antrim, from Belfast and Lisburn to Newtownabbey, covering single-storey kitchen extensions, two-storey additions, side returns and wraparounds.
For Belfast bungalows we design the roof first, because the low eaves decide the height of the new room. Semis and detached houses are typical of County Antrim, and many have room for a rear extension within Northern Ireland's permitted development limits.
How much does a bungalow rear extension cost in County Antrim?
In County Antrim, our guide for a bungalow rear extension is £1,610–£2,610 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 wide × 4 m deep (12 m²) | £19,500–£31,500 |
| 4 m wide × 6 m deep (24 m²) | £38,500–£62,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission in County Antrim?
In Northern Ireland the Planning (General Permitted Development) Order (Northern Ireland) 2015 allows a single-storey rear extension of up to 3 metres on an attached house or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary. Building control approval from the council is still required.
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.
Where in County Antrim do we work?
FAQ
Questions people ask
Can a bungalow extension be fully accessible?
Yes: level thresholds, wider doors and a wet room are straightforward to design in.
Will the roof look odd?
Not if the pitch and tiles match. Where the eaves are low, a flat-roofed section with a lantern is an alternative.
Can I extend the loft as well?
Sometimes, but that is a different project; a rear extension keeps everything on one level.
Do you cover all of County Antrim?
We cover 7 towns and districts in County Antrim, including Belfast, Lisburn and Newtownabbey.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.