Knock down and rebuild in Cardiff

Covering Cardiff

We work in Cardiff (CF10, CF11, CF14) and the places around it, including Whitchurch, Penarth and Caerphilly.

Homes in South 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 does a knock down and rebuild involve?

We assess whether rebuilding is better value than extending and renovating, prepare the planning application for the replacement dwelling, manage the demolition notice and asbestos survey, then build the new home. The process runs much like a new build once the old house is cleared.

Planning and building regulations checks under Welsh rules
Feasibility: rebuild versus extend and renovate
Asbestos survey, demolition notice and service disconnections

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

What approvals does a knock down and rebuild need in Wales?

Planning decisions in Wales are made by the local council, using permitted development rules set by the Welsh Government rather than England’s. Building regulations in Wales have their own approved documents, and the Party Wall etc. Act 1996 applies to work on shared walls and boundaries.

This needs full planning permission from your council in Wales.

What can affect a knock down and rebuild?

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.

How does the project run?

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.
Construction and completion. One site lead co-ordinates every trade through to the building control certificate.

Knock down and rebuild: common questions

Do I need planning permission?

Yes, for the replacement dwelling.

How long does it take?

Around 36 to 60 weeks including demolition.

Do you work in Cardiff?

Yes. Cardiff is within our coverage for knock down and rebuild, along with nearby Whitchurch and Penarth.

Other towns nearby

Learn more about knock down and rebuild, or see every project we cover in Cardiff.