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Single and double storey, side return and wrap-around extensions, from groundworks to the final coat of paint. We run every trade ourselves and work with your architect and Building Control, so the project moves and you’re not chasing anyone.
An extension touches every trade there is. The difference with us is that you don’t have to find, book or chase any of them.
Extension prices depend most on size, the roof, the glazing and the ground conditions. All prices exclude VAT. Your exact price follows a free site visit and a written, itemised quote.
| Project | From | What changes the price |
|---|---|---|
| Single storey rear or side extension (shell and finish) | £30,000 + VAT | Floor area, roof type and roof lights, size of bifolds, drainage runs, soil conditions |
| Wrap-around or larger single storey | By quote | Steelwork for open-plan spaces, kitchen fit-out, underfloor heating |
| Double storey extension | By quote | Structure, roof tie-in, bathrooms upstairs, scaffolding |
A bright garden room off the back of a house in East Kent, with a 3 m × 1 m solar-powered opening roof light. With no access at the back, we hired a crane to lift it over the roof.
The client was so pleased she asked us back to do her kitchen next.
The same order on every job, so you always know what happens next.
We measure up, look at access, drainage and structure, and talk through what you want from the space.
We work from your architect’s drawings, or recommend one. Then a written, itemised quote.
Planning if needed, Building Regulations always, and the party wall process if you have neighbours close by.
Groundworks, structure, roof, glazing, services and finishes, with a set start date and regular updates.
Building Control completion certificate, snagging and a final clean.
Many single storey rear extensions fall within permitted development, with limits on how far they project and how high they are. Double storey extensions, side extensions on some houses, and anything in a conservation area or on a listed building usually need a planning application to Swale or Canterbury. We tell you which applies before you commit.
Most single storey rear extensions take 10 to 16 weeks on site, depending on size, groundworks and the kitchen or glazing package. Double storey takes longer.
Single storey extensions start from £30,000 + VAT. Size, roof type, glazing, drainage and ground conditions move the price most. Every quote is itemised so you can see exactly where the money goes.
For most extensions, yes. We seal off the work area and keep your existing kitchen running for as long as we can. If the extension replaces the kitchen, we set up a temporary one.
For anything needing planning, yes, and we recommend one for most extensions. If you already have drawings we work from them; if not, we can introduce you to architects we work with.
If you’re building on or near the boundary, the Party Wall Act applies. We explain what notices are needed and can introduce a surveyor.
We do. We submit the application, book every inspection and hand you the completion certificate at the end.
If you have drawings, send them. If not, a photo of the back of the house and a rough idea of the size is plenty to start. We’ll call you back to arrange a site visit, usually within two working days.
Got photos of the space? Text or WhatsApp them from your phone to 07868 670097.
Every trade on our books, one point of contact. Here’s what else we do.