Building in Chelsea
Chelsea is one of London's most architecturally controlled neighbourhoods — Georgian and Victorian townhouses, garden squares, mews and mansion blocks, with a high proportion of listed buildings and conservation areas. Work here is as much about consent and craftsmanship as construction, which suits our in-house design-and-build approach.
- Postcode SW3
- Borough Kensington and Chelsea
- Projects 1
- Travel Under 45 min
What we deliver in Chelsea.
Each Chelsea street has its own typical layout — Victorian terrace, Edwardian semi, 1930s detached. We adapt the recommendation to the house, the planning context and how you actually want to live.
Rear and lower-ground extensions are the most common way to add space in Chelsea, where footprints are tight and street frontages are protected. We handle the listed-building or conservation consent alongside the build.
Mansard and rear-dormer loft conversions add a floor without altering a protected street elevation — designed to sit correctly within the roofline and the planning constraints typical of the area.
Full new-builds are rare in Chelsea and usually mean sensitive infill or a rebuild behind a retained façade. We manage the design, consents and construction as one project.
SERVICE 01 House extensions in Chelsea
A house extension is the biggest investment you can make in your home — it should transform how your family lives, not just add square metres. We design every extension around how you actually use your space, with a fixed, itemised price and stage-based payments so you stay in control from first sketch to handover.
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SERVICE 02 Loft conversions in Chelsea
A loft conversion adds an entire floor without losing any garden. We design lofts as proper rooms — full-height ceilings, generous windows, en-suite bathrooms — not afterthoughts squeezed into the rafters.
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SERVICE 03 New builds in Chelsea
New build is the most ambitious thing you can do — a chance to design exactly the home you want from the ground up. We have delivered single houses on infill plots, full plot developments, and demolition + rebuild projects. We work with leading architects or your own.
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Common Chelsea questions.
Things you might need to know about building in Chelsea.
Do I need planning permission for an extension in Chelsea?
Many extensions in Chelsea fall under permitted development. We assess your property type, council restrictions and any conservation status on the first visit.
How long does a project in Chelsea 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 Chelsea?
Possibly — many Kensington and Chelsea streets are within conservation areas which restrict materials and detailing. We have approved schemes in conservation areas across the borough.
What is a typical extension cost in Chelsea?
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.
Ready to start your Chelsea project?
Free quote in 2 minutes — no callbacks, no commitment. Or talk to a real human on 0800 0432 333.