Single and double-storey rear and side extensions, taken from the footings and brickwork through to steels, glazing and the final finishes. Build Site builds and fits out your extension as one managed job across Croydon and South London, so the building, plumbing and electrics are all handled by the same team.

Kitchen, dining and living extensions built from the footings up, made watertight and finished out to a high standard.
Two-storey extensions to add bedrooms and living space, structurally built and finished start to finish by one team.
Side-return and wrap-around extensions that open up the back of a house and bring in light and space.
Steels, glazing, plastering, plumbing and electrics all handled in-house, so the new space is finished, not just shelled.
Yes. Because the building work, plumbing and electrics are all kept in-house, the same team takes your extension from the footings through to the finishes, so you are not chasing separate trades.
We can point you to the right people for drawings and work to an approved spec and any planning or building control sign-off. We will talk it through at the free quote stage so you know what is needed before any work starts.
It depends on whether it is single or double-storey and the size, but we give you a realistic programme with the quote and keep you updated as the job moves through each stage.
Tell us about the extension you have in mind and we will get you a free, no-obligation quote.