House-to-flat conversions in Chelsea

Covering Chelsea

Our coverage around Chelsea (SW3, SW10) also includes Battersea (1 miles to the south-east) and Fulham.

Homes in London

London projects often mean working on period terraces with neighbours on both sides, tight access through the house and conservation area controls, so careful planning and party wall work matter as much as the build.

What does a house-to-flat conversion involve?

We assess the house against the council’s policies on flat sizes, parking, bins and cycle storage before any design work, then design layouts to the space standards your council uses. On site the critical work is fire separation, sound insulation between floors, separate services and meters, and protected escape routes.

Separate electrics, heating and metering
Kitchens, bathrooms and finishes
Bin, cycle and amenity space works

How much does a house-to-flat conversion cost in Chelsea?

Guide prices for house-to-flat conversions, including VAT where it applies. Your fixed price is confirmed in writing after the survey.

Priced on survey.

What approvals does a house-to-flat conversion need in England?

Projects in England go through two separate checks. Planning (or confirmation that the work is permitted development) comes from the district, borough or unitary council, and building regulations approval comes from the council’s building control team or a registered building control approver. Where work touches a shared wall or digs near a neighbour’s foundations, the Party Wall etc. Act 1996 applies.

Dividing a house into flats always needs planning permission in England. Councils assess flat sizes (many use the nationally described space standard), parking, bins, cycle storage and the effect on family housing supply.

What can affect a house-to-flat conversion?

Sound insulation between flats is tested on completion.
Mortgage lenders and freehold arrangements need early legal advice.

What are the steps?

Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.

Your questions answered

How long does a conversion take?

Typically 16 to 30 weeks on site after approvals.

Can you help with the planning case?

Yes. We check the council’s policies first and only proceed with a design that has a realistic chance of approval.

Do you work in Chelsea?

Yes. Chelsea is within our coverage for house-to-flat conversions, along with nearby Battersea and Fulham.

Also covering

Learn more about house-to-flat conversions, or see every project we cover in Chelsea.