House extensions & lofts in Kew
Kew's period terraces near the Green sit in some of London's most protected streetscape — extensions here live or die on planning strategy and materials. With seven completed Richmond projects nearby, we know what the TW9 planners will approve.
- Postcode TW9
- Borough Richmond upon Thames
- Service Design & build
- Free quote 2 min online
What we deliver in Kew
Every street sits differently — a period terrace, a post-war semi, a modern infill. We shape the recommendation around your actual house, its planning context and how you want to live.
Rear extensions with large rooflights bring natural light into narrow Victorian houses. Wrap-around extensions need careful roof detailing to satisfy planning.
Mansard conversions or modest dormers create extra space while respecting rooflines.
Infill plots between the river and gardens allow bespoke family houses; every design must blend with the surrounding period architecture.
SERVICE 01 House extensions in Kew
Single-storey, double-storey, side-return and wrap-around extensions — designed, planned and built by one in-house team.
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SERVICE 02 Loft conversions in Kew
Dormer, mansard, hip-to-gable and L-shape lofts — full-height ceilings, proper staircases, en-suites.
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SERVICE 03 New builds in Kew
Ground-up homes on infill plots, demolition-and-rebuild, and small multi-unit schemes.
View serviceRecent work near Kew
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.
Common Kew questions
Things you might need to know about building in Kew.
Do I need planning permission for an extension in Kew?
Many extensions in Kew fall under permitted development. Where a full application is needed, it goes to Richmond upon Thames Council — we assess your property type, the council's restrictions and any conservation status on the first visit, and handle the application ourselves.
How long does a project in Kew typically take?
From first consultation to handover: 6–9 months for a single-storey extension or loft, 9–14 months for double-storey or wrap-around. We give you a tighter estimate after the survey.
Are there conservation areas in Kew?
Several streets in Richmond upon Thames Council's area fall within conservation areas that restrict materials and detailing. We check your exact address against the register on the first visit, and we have approved schemes in conservation areas nearby.
What is a typical extension cost in Kew?
Build cost in this part of London runs £2,500–£4,000 per square metre for a finished extension including kitchen and finishes. Our calculator gives a personalised estimate.
Other Richmond upon Thames neighbourhoods
We deliver projects across the borough — same team, same pricing, same fixed-price contract.
Ready to start your Kew project?
Get an instant estimate in 2 minutes — no callbacks, no commitment. Or talk to a real person on 0800 0432 333.