Covering County Londonderry
Our knock down and rebuild service in County Londonderry covers Derry, Coleraine, Limavady and Magherafelt.
Homes in County Londonderry
Northern Ireland has a high proportion of detached houses and bungalows outside the cities, which often suit side extensions, rear extensions and upward extensions.
What does a knock down and rebuild involve?
Knock down and rebuild means demolishing an existing house and building a new one in its place, often a bungalow or poorly built post-war house replaced by a larger, more efficient home. Because the new house counts as a new dwelling, the build is usually zero-rated for VAT.
- Planning and building control applications to the council
- Feasibility: rebuild versus extend and renovate
- New foundations, structure and full fit-out
How much does a knock down and rebuild cost in County Londonderry?
Guide prices for knock down and rebuild, including VAT where it applies. Your fixed price is confirmed in writing after the survey.
| Knock down and rebuild | Guide price |
|---|---|
| Demolition and site clearance (total) | £15,000 to £35,000 |
| Rebuild, standard specification (per m²) | £2,100 to £2,600 per m² |
| Rebuild, good specification (per m²) | £2,600 to £3,100 per m² |
| Rebuild, high specification (per m²) | £3,100 to £3,700 per m² |
Planning and building rules in County Londonderry
In Northern Ireland the council handles both planning and building control. Permitted development rules are set by the Planning (General Permitted Development) Order (Northern Ireland) 2015, and there is no party wall act, so we agree access and protection with neighbours in writing.
This needs full planning permission from the council in Northern Ireland, plus building control approval.
What should County Londonderry homeowners check first?
- A replacement dwelling is usually zero-rated for VAT where the old house is demolished completely to ground level.
- Planning policy on replacement dwellings varies, especially in green belt and countryside.
What are the steps?
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- Site visit. We walk the plot or existing house, look at access, levels, services and boundaries, and talk through what could be built.
- Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
- We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.
Knock down and rebuild: common questions
Is VAT charged on a knock down and rebuild?
Usually not on the new house, if the old one is demolished completely and the new building is a qualifying dwelling.
How long does it take?
Around 36 to 60 weeks including demolition.
Do you work in County Londonderry?
Yes. County Londonderry is within our coverage for knock down and rebuild, along with nearby Derry and Coleraine.
Other towns nearby
- Knock down and rebuild in Derry
- Knock down and rebuild in Coleraine
- Knock down and rebuild in Limavady
- Knock down and rebuild in Magherafelt
Learn more about knock down and rebuild, or see every project we cover in County Londonderry.

