Covering Letchworth Garden City
Our coverage around Letchworth Garden City (SG5, SG6) also includes Hitchin, Stevenage and Luton.
Homes in the East of England
The East of England has a large stock of post-war and modern estate housing alongside period homes in market towns, which makes garage conversions, single-storey extensions and loft conversions popular.
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 application for the replacement dwelling
- New foundations, structure and full fit-out
- Reconnection of services and landscaping
How much should I budget for a knock down and rebuild?
What knock down and rebuild typically cost. These are guide ranges; the written quote for your house replaces them.
| 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 |
What approvals does a knock down and rebuild need in England?
In England we deal with the council’s planning team for permission or a lawful development certificate, with building control (the council or a registered building control approver) for inspections, and with neighbours under the Party Wall etc. Act 1996 where it applies.
This needs full planning permission from the council. We prepare the drawings and supporting documents, submit the application and respond to the planning officer.
What should Letchworth Garden City homeowners check first?
- A replacement dwelling is usually zero-rated for VAT where the old house is demolished completely to ground level.
- You will need somewhere to live for most of a year.
What are the steps?
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- 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 it cheaper to knock down and rebuild or renovate?
It depends on the existing house. Where a house needs major structural work and a large extension, rebuilding can be similar cost and gives a better result. We compare both at feasibility.
Do I need planning permission?
Yes, for the replacement dwelling.
Who deals with the council for a project in Letchworth Garden City?
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 Hitchin
- Knock down and rebuild in Stevenage
- Knock down and rebuild in Luton
- Knock down and rebuild in Welwyn Garden City
Learn more about knock down and rebuild, or see every project we cover in Letchworth Garden City.

