Delta Construction+44 (0) 7479 389 996Request a quote
Side-returns, rear extensions and full refurbishments across South West London's most desirable postcodes. From Clapham's Victorian terraces to Wimbledon's Edwardian villas — precision building for homeowners who expect the best.
South West London is dominated by Victorian terraced housing with untapped side-return potential, Edwardian semis and detached villas in Wimbledon, and converted mansion flats in Battersea and Clapham. The classic project here is opening up the ground floor.
Side-return extensions are the defining project of South West London — knocking through the galley kitchen, extending into the side return, and creating an open-plan kitchen-diner with roof lights and bifold doors to the garden. We also deliver a high volume of loft conversions in Wandsworth and Battersea terraces.
South West London is one of the most competitive renovation markets in the city. Homeowners here are design-conscious, often working with architects, and expect a contractor who can execute complex details — flush thresholds, shadow gaps, concealed services. That's exactly what we do.
Single and double-storey rear extensions, side-returns and wrap-arounds.
Mansard, dormer, hip-to-gable and L-shape loft conversions with full sign-off.
Repairs, reroofs, slate, tile, flat roof and leadwork.
Structural openings, repointing, garden walls and period restoration.
Paving, driveways, retaining walls, planters, pergolas and lighting.
A side-return extension fills the narrow alley that runs along the side of a Victorian terrace. It's typically 1–1.5 metres wide but transforms a cramped galley kitchen into a wide, light-filled open-plan space. Most are permitted development, so no planning needed.
Regularly. Many South West London clients come to us with architect-designed plans. We're comfortable with complex specifications and can value-engineer details that keep the design intent while managing budget.
A typical side-return infill with new kitchen in SW London starts from around £95k–£130k depending on length, specification, and whether structural steel is needed. We provide an exact fixed-price quote after survey.
Yes. We have completed basement excavations in Wandsworth and Clapham. Basement work requires specialist waterproofing (we use Type C cavity drain membranes) and structural underpinning — both within our capability.
Send us the address and a rough brief — a director will reply within one working day with a free, no-obligation quote.