Extensions

Single-storey rears, side returns, wrap-arounds and double-storey extensions across London — from groundworks and structure through to second fix and finishes, with or without architect drawings already in hand.

It's still your home while we're in it.

The kettle stays on, the kids carry on, and the dust stays where we said it would. We seal the works off from the rest of the house, agree noisy windows with you up front, and leave the site clean at the end of every day — because for us it's a build, but for you it's still where you live.
“We expected to move out for the messy middle. We didn't have to. The kids carried on, the kettle never moved, and the dust stayed where they said it would.”
— Private client, single-storey rear extension
South London rear extension — family stayed in the house through every week of the build.
Front view of completed rear extension with tiled roof and bifold doors
Contemporary single-storey rear extension with zinc roof
Flat roof with rooflight detail
Rear extension foundations and blockwork under construction
Extension brick footings in progress

Common questions

Most single-storey rear extensions fall under Permitted Development, but conservation areas, listed buildings and larger schemes need full planning. We tell you which applies at the first site visit and — if you don't have drawings yet — introduce you to architects we've worked with.

A standard single-storey rear runs twelve to sixteen weeks once foundations start. Wrap-arounds and double-storey extensions take sixteen to twenty-four. You get a written schedule before you sign anything.

As a guide, £2,500–£3,500 per m² of new floor area for a high-quality single-storey rear, inclusive of structure, glazing and a standard fit-out. Premium finishes and complex sites push the upper end. We give you a fixed price after the first site visit.

Yes — most clients do. We seal the works off from the rest of the house and agree noisy-works windows up front. There's usually a week or two during the structural tie-in where the kitchen is unusable, and we flag that early so you can plan around it.

Staged against progress — typically deposit, foundations complete, weatherproof, first fix, completion. You're never paying for work that hasn't happened yet.

Let's Discuss your project

We have delivered building, refurbishment, and maintenance work across London for private clients, commercial operators, and public-sector organisations since 2006.

Get a quote

All work is fully insured and backed by 25 year guarantee