GS Renovation designs and builds extensions across Clapham, working with the bay-fronted Victorian and Edwardian terraces that define SW4. With over 30 years in South London, we handle rear, side-return and wrap-around extensions from foundations and steelwork through to a full fit-out, keeping the works tidy in your occupied home.
Side-return and rear extensions in Clapham
The classic Clapham extension fills in the side return beside the rear closet wing, capturing the narrow strip of yard that most SW4 terraces waste. Combined with a rear extension, this creates the wide, open kitchen-diner that suits family life near the Common. We dig new foundations to suit the ground, build the walls, and install steel beams to carry the existing structure over the enlarged opening.
Because these terraces sit wall to wall with their neighbours, extensions almost always involve the Party Wall Act, whether you are building along the boundary or excavating near the adjoining foundations. You serve the notices, coordinate with the surveyor if one is appointed, and sequence the groundworks so your neighbour's wall stays supported throughout the build.
Permitted development or planning in Lambeth
Some Clapham extensions fall under permitted development, but many do not. Whether yours needs a full planning application to Lambeth Council depends on the size, the position, and whether the property sits in a conservation area or has had permitted development rights removed. We assess your specific SW4 house before design so you know which route applies rather than assuming.
Once the planning position is settled, the structural side is governed by building regulations, with building control inspecting the foundations, steelwork, insulation and drainage. We manage both threads together, then complete the roof works, glazing, plastering, electrics and plumbing, handing back a finished room rather than a shell for another trade to fit out.
- Side-return and rear extensions
- Drainage diversion and build-over agreements with the water authority
- Insulation, airtightness and thermal detailing to regulations
- Bi-fold, sliding and French door openings to the garden
- Foundations, groundworks and steel frames
Why Clapham Homeowners Choose GS Renovation
Clapham homeowners choose GS Renovation because we run the whole extension under one roof, from the first foundation to the final coat of paint. We know how SW4 terraces are built, we coordinate the work around the party wall award and the Lambeth planning position honestly, and our 30+ years mean the steel, the groundworks and the finish all come from one accountable team.
- Our own trades on site rather than a chain of subcontractors
- Building control applications and inspections coordinated for you
- Building control inspected at foundation, damp course and steel stages
- Site left safe and secure at the end of every day
- Drainage diverted or built over with the right approval in place
- Permitted development checked before you pay for a planning application