Single and double storey extensions in Tooting. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds extensions across Tooting, adding space to the bay-fronted Victorian and Edwardian terraces that fill SW17. With over 30 years in Wandsworth, we handle everything from a single-storey rear extension over the closet wing to a full side-return infill and double-storey addition, groundworks through to fit-out.

The side-return infill is the signature Tooting extension. These terraces have a narrow strip of yard running alongside the rear closet wing, and filling it in widens a cramped galley kitchen into a generous open-plan room. We dig new foundations next to the existing wall, build up in matching brick, and tie a glazed or solid roof into the original slope. A steel beam usually replaces the old rear wall to open the two spaces into one.
Many single-storey rear and side-return extensions in Tooting fall under permitted development, but that is not guaranteed. Whether your project needs a full planning application to Wandsworth Council depends on its size, the position on the plot and whether the property sits in a conservation area or has had permitted development rights removed. We assess this at the start, prepare the drawings, and submit either a lawful development certificate or a planning application as needed.
Where the plot allows, we build double-storey rear extensions on Tooting terraces, adding a larger kitchen below and a bedroom or bathroom above. These almost always need a full planning application to Wandsworth Council, because a two-storey addition changes the rear elevation and affects neighbouring light. We manage the design, the engineer's calculations and the submission, then build deeper foundations to carry the extra load and integrate the new roof and gutters with the existing terrace.
Building up and out against a neighbour brings the Party Wall Act into play, especially where foundations sit close to the boundary or the new structure ties into the shared wall. You serve the notices, agree the awards and keep the neighbours informed, which matters on Tooting's close-set streets. Once the shell is watertight we complete the full fit-out, plastering, heating, electrics and decoration, so you move back into finished rooms rather than a bare structure.
Tooting families choose GS Renovation because we build the whole extension with one team, from the foundations and steel to the planning submission and final decoration. We know how SW17 terraces are put together, we handle Wandsworth Council and party wall matters for you, and we keep the house liveable while we work. Over 30 years locally means fewer surprises.
George was a great find. The job required re-plastering the walls before fitting acrylic panels. He also re-plumbed the shower waste under the solid…
I am very happy to recommend George after he completed the work on my 2 bathrooms. He worked very hard to make sure everything was completed and even…
Really happy with the quality of remedial works carried out by George in putting other previous tradesman work right. He was very helpful, honest and…
FAQ
Not by much, and not because of the postcode. What raises a house extensions figure here is the housing rather than the location: Edwardian bay-fronted houses with generous ceiling heights and long rear gardens take more making good than a modern estate. Access and parking around SW17 affect the labour line too. GS Renovation prices the property in front of it rather than applying a Tooting or South West London multiplier. Ring 07472 424 226 and GS Renovation will explain what actually moves the figure at SW17. As a rough guide, house extensions in London typically starts from roughly £40,000 for a single-storey rear extension and rises with size and specification (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.
Usually a little, and the extra time is in the finishing rather than the structure. Edwardian bay-fronted houses with generous ceiling heights and long rear gardens rarely offer square openings or regular floors, so house extensions at an SW17 address takes more care in plaster and joinery. GS Renovation allows for that in the Tooting programme rather than announcing it later. The structural stage itself is broadly comparable across Wandsworth. Ring 07472 424 226 and we will explain what a Victorian and Edwardian terraced SW17 property usually adds.
Happily. Previous Tooting clients are usually willing to talk about how a house extensions project actually ran, including what went wrong and how GS Renovation dealt with it. We will point you at recent work near SW17 and in Battersea. The 31 MyBuilder reviews behind our 4.9 rating are public and cover the same ground. Ring 07472 424 226 to arrange a Wandsworth introduction. Nothing about a Wandsworth reference is curated by us at SW17.
Usually, if you are excavating near a neighbour's foundations or building on the line of junction, both common on Tooting plots. Notice is served before work starts and a schedule of condition protects both parties. We prepare the paperwork for your SW17 address.
It does, and the difference starts at the survey. GS Renovation cannot rely on assumptions about how a Victorian and Edwardian terraced Tooting house is built, so house extensions begins with establishing the facts at SW17. Everything after that follows from what is found. Over 30 years of hands-on experience is what makes that reading accurate. Ask on 07472 424 226 what the SW17 survey has to establish in Tooting before any house extensions work can actually begin.
It depends on the property. Many single-storey rear and side-return extensions in Tooting qualify as permitted development, but size limits, plot position, conservation area status and any removed rights can push you into a full planning application to Wandsworth Council. We check your specific address at the outset and handle either a lawful development certificate or a planning submission for you.
We do not think of it as travelling, because Tooting is inside our normal working area. House extensions projects run across Wandsworth most weeks, so reaching an SW17 address is routine and there is no surcharge for it. GS Renovation also returns for aftercare, which matters more than the initial journey. Ring 07472 424 226 and we will confirm the position. The survey costs a Tooting homeowner nothing. Snagging visits to SW17 are equally routine.
Every Service, One Team
The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Tooting. Explore what else we do locally:
Same Service, Nearby Areas
We carry out house extensions across Tooting and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for house extensions in Tooting. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.