
Extensions in Earl’s Court.
Chelsea · SW3 · Chelsea terraced houseCompleted work, photograph
Earl’s Court is tall terraces and mansion blocks, mostly flats. We extend garden flats and whole houses, and watch the fronts.
Garden flats and big terraces.
- Philbeach
- Article 4 even for painting a front
- HO1
- The borough’s rule on merging homes
- SW5
- Stucco terraces and red brick mansion blocks
NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle house and kitchen extensions in Earl’s Court SW5, under one contract. A rear kitchen extension typically runs £160k to £250k. A side return extension typically runs £140k to £220k. Call 020 7731 6841, and a budget estimate typically follows within seven days.
Earl’s Court rises in tall stucco terraces and red brick mansion blocks. Most houses hold several flats.
The usual brief is a lower ground garden flat. Its kitchen pushes out under a glass roof, toward the garden.
A few owners want to reunite flats as houses. Policy HO1 resists merging self-contained homes, so feasibility starts there.
Big terraced houses that stayed whole can take a full width rear room. CD13 keeps it below the eaves.
Fronts are protected too. In Philbeach, even repainting a front needs planning.
What the council allows in Earl’s Court.
- Council
- Royal Borough of Kensington and Chelsea, under its 2024 Local Plan.
- Conservation areas
- Philbeach and Earl’s Court Village among others.
- Article 4
- In Philbeach, painting a house front needs planning permission.
- Merging flats
- Policy HO1 does not allow existing self-contained homes to be merged into one.
- Rear additions
- Policy CD13 keeps them to the neighbours’ rear line, below the eaves.
- Mansion blocks
- Flats there carry no householder rights to extend.
Source: Kensington and Chelsea’s Article 4 directions in conservation areas, and its Local Plan 2024. Read on 25 October 2026. Policies change, so we read them again for your address.
Houses we have finished nearby.

Chelsea·Terraced house
Chelsea terraced house
A four floor house renovation close by in Chelsea, in the same borough.
See the project
Fulham·House
Fulham house, refurbished throughout
A Fulham house nearby, with a steel-framed kitchen opening onto the garden.
See the projectCompleted work, photographs
What a house extension costs in Earl’s Court.
A garden flat extension is priced with the freeholder’s licence in view.
Fees, party wall costs, contingency and VAT sit outside the build.
What Earl’s Court owners ask about extensions.
In Earl’s Court
- Every service in Earl’s Court
- Loft conversion in Earl’s Court
- Party wall surveying in Earl’s Court
- Planning consultants in Earl’s Court
- Architectural design in Earl’s Court
Extensions nearby
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- Kensington
- Chelsea
- Fulham
- South Kensington
Further reading, from the blog
Can I extend a garden flat in Earl’s Court?
Often, with planning and the freeholder’s licence.
CD13 measures it against the neighbours’ rear additions.
A glass roof keeps the room behind it bright.
Will Policy HO1 stop me enlarging my Earl’s Court flat?
Not if the flat simply grows into its own garden.
HO1 bites when self-contained homes are merged into one.
Does the Philbeach Article 4 affect an Earl’s Court extension?
It controls fronts, even painting them.
A rear extension is judged under the borough’s usual tests.
Any front change made alongside needs planning too.
Can a mansion block flat in Earl’s Court be extended?
Rarely outward. Flats have no permitted development rights.
Gains usually come from a reworked plan inside.
The lease and managing agent set what is possible.
Tell us about your home in Earl’s Court.
Your name and one way to reply are enough. It goes straight to the studio.
- Already have an architect or designer? We build to their design. Working with your designer
- An NDA on request, and your home is never published without your consent. How we work in confidence