Southfields forms part of the London Borough of Wandsworth. We deliver loft conversions, extensions and complete renovations across SW18.
Southfields sits within the London Borough of Wandsworth and has a strong mix of Victorian and Edwardian terraces, maisonettes and family houses. Our completed local project converted an unused roof into bright living space with a rear dormer, structural steelwork, rooflights, insulation and full internal finishes.
Local project guide
Southfields is part of Wandsworth borough and its Victorian and Edwardian homes often offer good potential for loft conversions and carefully planned extensions. We assess the property, roof form, access and address-specific planning controls before fixing the scope.
Completed work
Southfields projects are covered by Wandsworth Council and often involve the borough's familiar period terraces and semi-detached family homes. The practical starting point is to assess roof volume, previous alterations, access and any address-specific planning controls together.
Rear dormers are a common way to create useful headroom in SW18 terraces, while hip-to-gable schemes may suit end-of-terrace and semi-detached houses. Stair position, fire safety, structure and usable head height should be tested before the room layout is fixed.
Planning requirements depend on the exact property, conservation status and proposed work. We check Wandsworth Council guidance, permitted development rights and likely party-wall requirements before recommending a route.
Our 10-week Southfields dormer loft conversion included structural steelwork, upgraded insulation, rooflights and complete internal finishes. The full case study is linked below with finished and construction photographs.
Dormer, mansard, hip-to-gable, and L-shaped conversions for period properties in Southfields.
Rear, side return, and wraparound extensions. Open-plan living designed for homes in Southfields.
| Type | Typical Cost | Planning? |
|---|---|---|
| Velux / Rooflight | £55,000 – £75,000 ex VAT | Usually no |
| Rear Dormer | £75,000 – £110,000 ex VAT | Often no |
| L-Shaped Dormer | £90,000 – £140,000 ex VAT | Check with us |
| Mansard | £100,000 – £160,000+ ex VAT | Yes |
| Rear Extension | £60,000 – £90,000 ex VAT | Often no |
| Side Return | £40,000 – £60,000 ex VAT | Often no |
All costs exclude VAT. Detailed quote provided before work begins.
Next step
Tell us what you are considering and choose a callback or site visit. We will review the property, scope and likely approval route before preparing a clear, itemised proposal.
Free consultation. Clear, itemised quote. No deposit upfront.
