County Down
Rear extensions in Bangor
We design and build rear extensions for homes in Bangor, County Down, from single-storey kitchen-diners across the back of the house to two-storey extensions that add a bedroom above.
Bangor is in County Down, with postcode districts including BT19 and BT20. The nearest places we also cover are Newtownards (4.8 miles) and Holywood (6.4 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 Bangor
- 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 Down:
- 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 Bangor
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 Bangor like to extend?
Bangor has terraces near the centre, semis on the edges and many detached houses and bungalows in the surrounding countryside, where plots are often generous.
Planning rules for Bangor
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 Bangor?
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 Bangor?
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 Bangor 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.