ExtensionsFulham SW6
House extensions in Fulham.
Rear, side return and wraparound extensions for Fulham terraces. Drawn, priced and built from our studio on Fulham High Street.
What a Fulham terrace can take.
NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle house and kitchen extensions in Fulham SW6, under one contract. A rear extension runs £280 to £320 a sq ft, construction only. A side return runs £310 to £340 a sq ft. Call 020 7731 6841, and a budget estimate typically follows within seven days.
Most Fulham houses are Victorian terraces. Behind each one runs a narrow back addition, with a passage beside it.
That passage is the side return. Filling it widens the kitchen across the whole house.
A rear extension pushes the back wall into the garden instead. A wraparound does both, in one L-shaped room.
The garden decides how far to go. We measure it first, then draw what it can give up.
What the council allows.
- Council
- London Borough of Hammersmith and Fulham. Kensington and Chelsea’s CL7 does not apply here.
- Permitted development
- Some single-storey rear extensions can go ahead without planning. Side and wraparound extensions in a conservation area need it.
- Conservation areas
- Parsons Green and the Peterborough Estate are among Fulham’s conservation areas. Materials and roof lines are judged closely there.
- Party walls
- A side return or rear extension usually builds on or near the shared wall. Notices go to the neighbours first, under the Party Wall Act.
- Flood risk
- Over 60% of the borough is in flood zones 2 and 3. An extension there carries a flood risk assessment.
Source: Hammersmith and Fulham’s Local Plan 2018, Policy DC11. Read on 2 October 2026. Policies change, so we read them again for your address.
Kitchens we have built nearby.
Fulham·New build
Fulham new-build houses
Four new houses in Fulham. The kitchens are lit from above by a rooflight.
See the project
Chelsea·Townhouse
Chelsea basement and extension
A kitchen extension and a new basement, close by in Chelsea.
See the projectCompleted work, photographs
What it costs.
£280 to £320a sq ft, construction only. Our rear extension band.
£310 to £340a sq ft, construction only. Our side return band.
£140k to £220kA side return extension. A project total, from our 2026 cost guide.
£200k to £320kA wraparound extension. A project total, from our 2026 cost guide.
The bands are rates per square foot, construction only.
The cost guide figures are whole project totals, from our 2026 guide.
Fees, party wall costs, contingency and VAT sit outside both.
Extensions in Fulham, answered.
Do I need planning permission for a Fulham side return?
In a conservation area, yes. Side extensions are not permitted development there.
Outside one, a small side return may not need it.
We check the house’s status before anything is drawn.
How big can a rear extension be in Fulham?
The garden and the neighbours set the limit more than any number.
We measure the plot and the light to the houses either side.
Then we draw the largest room the planners are likely to accept.
Will my neighbours need a party wall agreement for an extension?
Usually, since the extension builds on or near the shared wall.
Notices go out before work starts. Each neighbour can agree, or appoint a surveyor.
We run the process alongside the design.
What does a kitchen extension in Fulham cost?
Our 2026 cost guide puts a rear kitchen extension at £160k to £250k.
A side return runs £140k to £220k, and a wraparound £200k to £320k.
Built per square foot, a rear extension runs £280 to £320.
From the journal358 notes, free to read
Fulham, written up.
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3 min read
Planning permission for a London extension: timing and refusals
A decision date is not a start date. What sits either side of the council decision, plus pre-application advice and refusals.
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4 min read
Side return or rear extension? Cost and how to choose
Side return or rear extension for a London terrace? What each one is, what moves the cost of each, and how a design and build contractor chooses.
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3 min read
Rear extension cost in London, what the number covers
What a London rear extension costs per square foot. What the build rate covers, what moves it, and how it compares with a side return.
Extensions, Fulham
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