We design, plan and build house extensions across Chiswick and the wider Hammersmith and Fulham borough — one team, one fixed price, one project manager from sketch to handover.
Chiswick is a leafy west-London neighbourhood of Victorian and Edwardian terraces, mansion flats and the distinctive Queen Anne houses of the Bedford Park garden suburb. Much of it sits within conservation areas, so adding space is about respecting the street's character while opening up family living.
Side-return and full-width rear extensions are the staple here — turning narrow Victorian kitchens into open-plan family space. We design them sympathetically and handle any conservation-area consent end-to-end.
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 — Chiswick (W4) is well within our Hammersmith and Fulham 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 Hammersmith and Fulham. 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
