Question 1

What does a full house renovation typically cost on a Chelsea townhouse (SW3 or SW10)?

Accepted Answer

Whole-house programmes on SW3 townhouses — commonly four or five floors across 200–350 m² — usually land between £450,000 and well over £900,000 once basement works, premium materials and period restoration are built in. Properties in the SW10 stretch toward World's End sit at the lower end of that band. Conservation obligations push both material and trade costs above comparable schemes elsewhere in London, and listed status adds design and consent time before a single tool is lifted. Every option is costed line by line and returned to you the same day as the site survey.

Question 2

Do I need planning consent to extend a Victorian terrace in a Chelsea conservation area (SW3)?

Accepted Answer

In most of Chelsea's conservation areas, Article 4 directions have stripped away the permitted development rights that would otherwise allow a modest rear extension without a planning application. That means a rear addition to an SW3 Victorian terrace will almost certainly need a full planning application to the Royal Borough of Kensington and Chelsea — not a prior-approval notification — with controls on materials, roof form and the depth of the projection. Neighbour consultation is standard and timescales reflect that. We verify the exact designation for your street at the initial visit and give you a frank view of approval prospects before any fees are incurred.

Question 3

What consents are required for a basement dig under a Chelsea townhouse (SW3, SW10)?

Accepted Answer

Basement extensions in Chelsea sit outside the scope of permitted development regardless of conservation-area status. A full planning application is required, supported by a structural engineer's scheme, a drainage strategy and waterproofing design, and party-wall agreements with every adjoining owner affected by the excavation. For listed buildings the works also need listed building consent. We sequence the consents in the correct order, manage the professional appointments, and include each stage as a separate costed line so you can see the full programme before committing to the build.

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Services we deliver in Chelsea

Nearby areas we also cover

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Commonquestions, Chelsea.

Let's talk through what you're planning.