Covering Swansea
Alongside Swansea, we also cover Neath (7 miles to the north-east), Pontarddulais and Llanelli.
Homes in West Glamorgan
Housing in Wales ranges from terraced streets in the valleys and older industrial towns to stone-built homes in rural areas and modern estates around the cities.
What goes into a knock down and rebuild?
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 regulations checks under Welsh rules
- Feasibility: rebuild versus extend and renovate
- Reconnection of services and landscaping
What will a knock down and rebuild cost?
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 |
How is a knock down and rebuild approved in Swansea?
In Wales the planning rules, including what counts as permitted development, are set by the Welsh Government, and Welsh building regulations differ in places from England’s. We check both against your house before drawings are finalised, and handle party wall notices where needed.
This needs full planning permission from your council in Wales.
What should Swansea 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 happens after I enquire?
- 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.
- Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
- Construction and completion. One site lead co-ordinates every trade through to the building control certificate.
Questions about a knock down and rebuild in Swansea
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.
Do I need planning permission?
Yes, for the replacement dwelling.
Who deals with the council for a project in Swansea?
We do. We prepare the drawings, submit planning or permitted development paperwork if needed, and arrange building control inspections.
Knock down and rebuild in nearby towns
- Knock down and rebuild in Neath
- Knock down and rebuild in Pontarddulais
- Knock down and rebuild in Llanelli
- Knock down and rebuild in Ammanford
Learn more about knock down and rebuild, or see every project we cover in Swansea.

