We design, plan and build house extensions across Kew and the wider Richmond upon Thames borough — one team, one fixed price, one project manager from sketch to handover.
Kew is famous for its botanical gardens and leafy streets. Its riverside location and UNESCO-listed heritage make it a sensitive planning environment — planning authorities require alterations to preserve the historic character.
Rear extensions with large rooflights bring natural light into narrow Victorian houses. Wrap-around extensions need careful roof detailing to satisfy planning.
Kew projects include a glazed rear extension on a leafy avenue, a mansard conversion with two bedrooms and an in-character two-storey replacement home on a garden plot.
Planning drawings, building-regulations and party-wall paperwork are prepared and submitted by our own team — including for conservation-area or listed properties where extra consent is needed. One point of contact owns both the approvals and the build, so nothing falls between an architect and a separate contractor.
No subcontractor juggling. From the first sketch through structural engineering to final snagging, your project moves through people who all sit in the same office and answer to the same project manager.
You pay in stages, only after each stage is signed off. Variations only happen when scope genuinely changes — and they go through written authorisation, never a verbal "while we are at it".
extensions Side-return rear extension on a Victorian terrace, opening up the kitchen and dining space onto the garden.
extensions One of our recent Surrey project involved large double storey side and rear house extension, creating a spacious open plan kitchen, snug, and dining area with massive sliding and bifold door.
extensions This project in Surbiton, London involved a hip-to-gable loft conversion to add two new bedrooms and a bathroom with a walk-in shower. We also completed a ground floor remodel, including a rear extension with a modern ki
Yes — Kew (TW9) is well within our Richmond upon Thames working area. We typically deliver several house extensions projects across this borough each year.
End-to-end (consultation → handover) usually 12–22 weeks. Build phase alone is shorter — most house extensions sites complete in 8–18 weeks depending on scope and finishes.
Typical range: From £2,500 / m². Our online calculator gives you a tighter figure based on your house type and ambitions; the fixed quote follows a free site visit.
It depends on the property. Many house extensions fall under permitted development, especially in Richmond upon Thames. Where planning is needed (conservation areas, listed properties, larger schemes), we handle the application end-to-end.
Many extensions fall under permitted development. We assess your property and tell you exactly what you need on the first visit.
A single-storey extension takes 12–16 weeks from breaking ground to completion. Double-storey runs 16–22 weeks.
For most rear extensions, yes. We dust-seal the working area and maintain access to your kitchen and bathroom.
Free 2-minute calculator + a fixed-price quote within one working day after a site visit
