County Antrim
Rear extensions in Newtownabbey
From the first measured visit to building control sign-off, we handle rear extensions in Newtownabbey under one contract.
Newtownabbey is in County Antrim, with postcode districts including BT36 and BT37. The nearest places we also cover are Holywood (3.7 miles) and Belfast (4.4 miles).
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
Rear extensions we build in Newtownabbey
- Single-storey rear extensions
- Two-storey rear extensions
- Kitchen-diner rear extensions
- Side return extensions
- Wraparound extensions
- Glazed and glass-box rear extensions
- Rear extensions for terraced houses
- Rear extensions for semi-detached houses
- Rear extensions for bungalows
- Rear extension plans and planning applications
Also available across County Antrim:
- Rear extensions for detached houses
- Flat-roof rear extensions
- Pitched and lean-to roof rear extensions
- Knocking through to a rear extension
- Roof lanterns and rooflights for rear extensions
- Permitted development rear extensions
- Building Regulations for rear extensions
Rear extension prices in Newtownabbey
Northern Ireland prices are the lowest in our range.
| Example | Guide inc VAT |
|---|---|
| Single-storey, 3 m × 4 m (12 m²) | £20,000–£32,500 |
| Single-storey, 4 m × 6 m (24 m²) | £39,500–£64,500 |
| Two-storey, 3 m × 5 m footprint (30 m²) | £47,000–£70,500 |
| Side return, about 14 m² | £28,000–£46,500 |
| Wraparound, about 25 m² | £48,000–£78,500 |
What are homes in Newtownabbey like to extend?
Semis and detached houses are typical of Newtownabbey, and many have room for a rear extension within Northern Ireland's permitted development limits.
Planning rules for Newtownabbey
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.
Northern Ireland has no larger-extension prior approval route; anything beyond permitted development needs a planning application.
Northern Ireland's building regulations are administered by council building control teams, who approve the plans or a building notice and inspect the work through to completion.
Nearby towns
FAQ
Questions people ask
How much is a rear extension in Newtownabbey?
A 3 m × 4 m single-storey rear extension is about £20,000–£32,500 including VAT at our Northern Ireland guide rates; the written price follows a survey.
Do I need planning permission in Newtownabbey?
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.
Is the site visit in Newtownabbey free?
Yes, with no obligation.
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.