Home Extension Builders in Wimbledon

Home extension cost in Wimbledon typically ranges from £45,000 to £110,000+. A single-storey rear extension (3m x 4m) costs £45,000–£65,000, larger single-storey extensions (5m x 6m) run £65,000–£85,000, side returns £35,000–£55,000, and double-storey extensions £85,000–£110,000+. Costs vary based on groundworks, finishes, and whether the property sits within a conservation area. Buildaway provides full itemised home extension cost Wimbledon breakdowns before any work begins.

Home extension cost in Wimbledon runs around 20–30% above the UK national average due to South West London labour and material rates. Where a typical single-storey rear extension averages £35,000–£50,000 nationally, a comparable home extension in Wimbledon more realistically sits at £45,000–£65,000. The SW19 and SW20 postcodes sit firmly at the premium end of home extension cost UK pricing. Buildaway offers transparent, no-hidden-fee estimates throughout.

Most home extensions in Wimbledon complete within 12 to 20 weeks. Single-storey rear extensions take 12–14 weeks, side returns 10–12 weeks, and double-storey extensions 16–20 weeks. Timelines depend on planning permission duration, groundworks complexity, and Building Control stages. Party wall agreements or conservation area consents may add further lead time. Buildaway sets realistic programme dates from the start and keeps you informed throughout.

Buildaway offers single-storey rear extensions, side return extensions, double-storey additions, wrap-around extensions, and garage conversions across Wimbledon. Our home extension specialists assess your property's footprint, garden space, and planning constraints before recommending the best solution. We tailor home extension plans in Wimbledon to suit your budget, lifestyle, and property character.

We begin with a free site survey covering your property's structure, boundaries, drainage, and local planning requirements. We discuss your home extension ideas and work through how much a home extension costs for your specific property type. Buildaway then produces full architectural drawings and structural calculations, managing all submissions to Merton Council where needed — right through to Building Control completion certificates.

Yes — Buildaway handles the complete journey from design through to finished construction. Our in-house team of architects, structural engineers, and tradespeople covers planning applications, party wall agreements, Building Control submissions, and all construction trades including groundworks, brickwork, roofing, carpentry, electrics, plumbing, and plastering. As an integrated home extension company in Wimbledon, you have a single point of contact from first conversation to final handover.