Chelsea · SW3 · SW10
House extensions in Chelsea.
Additions that read as if they were always there.
Why Ushii in Chelsea
Ushii delivers extension work across Chelsea (SW3 · SW10) with directly employed trades. Not a broker, not a list of numbers passed to whoever is free that week. The carpenters, roofers, electricians and gas engineers on your Chelsea site are on our payroll, which is why programmes hold and standards stay consistent from strip out to snagging.
Chelsea projects run in tight streets with tighter neighbours. Delivering on a Cheyne Walk crescent or a Cadogan Gardens mansion block means small skips, quiet unloads, protected communal parts and an office happy to answer the freeholder's managing agent by return. Our directly employed teams work here often enough that most of the porters know us by name.
Prime central planning departments expect measured drawings, heritage statements and a considerate constructors approach to hours, deliveries and noise. We prepare all of it before a single tool arrives on site.
The best extensions do not announce themselves. Brick coursing lines up. Ridge heights sit down. New glazing frames the garden without stealing focus from the original house. We build extensions the way conservation officers wish everyone did.
What the work covers
House Extensions for Chelsea properties.
Feasibility
Planning constraints reviewed alongside your brief before drawings begin.
Coordination
Party wall, structural engineer and building control managed on your behalf.
Craft
Traditional trades and modern envelope detailing working together.
Common questions
House extensions in Chelsea, answered.
How much does a extension cost in Chelsea?
Cost follows scope, access and the condition of the building rather than the postcode. After a survey in Chelsea we issue a fixed, itemised price so you can see exactly what each element of the extension carries. There are no provisional sums hidden in the back pages.
Do you work on georgian and victorian terraces in Chelsea?
Regularly. Georgian and Victorian terraces, Cheyne Walk and riverside houses, Mansion blocks off Sloane Square all feature in our Chelsea workload, and each one is surveyed on its own terms before we price anything.
Which areas near Chelsea do you cover?
We work across Kensington, Knightsbridge, Belgravia, Fulham, Pimlico and the wider London area, with a directly employed team rather than local trades brought in for the day.
Do we need planning permission?
Many rear extensions fall under permitted development. Anything on a listed building, in a conservation area or beyond PD limits will need consent. We assess this at feasibility.
How do you match old brickwork?
We take physical samples to a handmade brick supplier and dry-lay panels for you to approve before ordering.