Glazed rear extension opening onto a navy kitchen with a central island.

House extensions in South West London.

Fulham · SW6 · Fulham Victorian houseCase study

Glazed kitchens, infilled side passages and garden rooms for SW terraces. Our studio sits on Fulham High Street, close to every site.

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Wider kitchens, brighter backs.

Outriggers
The slim back wing on Victorian terraces
Three boroughs
Each with its own tests for additions
Steel and glass
Made to measured site drawings

NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle house and kitchen extensions in South West London SW, 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.

Behind most Victorian terraces between Belgravia and Parsons Green sits a slim outrigger. Beside it runs a dark, damp passage nobody uses. Infilling that strip gives a kitchen real width.

Glazing does the rest. A frameless rooflight along the old boundary pulls daylight deep into the plan. Sliding doors then open the dining space onto the garden.

Each borough draws its line differently. Kensington and Chelsea compares your proposal with neighbouring additions along the row. Hammersmith and Fulham allows some modest single storey schemes under permitted development.

Our engineers size the steels before the groundworkers arrive. Drainage is rerouted, footings poured and the shell made weathertight before joinery begins.

Where the line falls for SW additions.

Council
Royal Borough of Kensington and Chelsea for Chelsea and South Kensington. Hammersmith and Fulham for Fulham.
Garden level
Policy CD13 holds a rear addition to the line set by neighbouring extensions.
Rear additions
Policy CD13. Keep to the neighbours’ rear line, and stay below the eaves.
Merging flats
Policy HO1 does not allow existing self-contained homes to be merged into one.
Mansion blocks
Flats there carry no householder rights to extend.

Source: Kensington and Chelsea’s Local Plan 2024, Policies HO1 and CD4 to CD13. Read on 7 October 2026. Policies change, so we read them again for your address.

What a house extension costs in South West London.

£160k to £250kA rear kitchen extension. A project total, from our 2026 cost guide.

£200k to £320kA wraparound extension. A project total, from our 2026 cost guide.

SW extensions often wait on conservation consent before the build starts.

Both figures are project totals.

Fees, party wall costs, contingency and VAT sit outside them.

Open the calculatorThe 2026 cost guideCan I build it here?

Can a Fulham side passage be infilled without an application?

Some modest rear schemes qualify as permitted development.

Conservation areas such as Parsons Green narrow those rights considerably.

What sets the depth of an extension in Chelsea or Earl’s Court?

Neighbouring additions along the row usually do.

Policy CD13 holds yours to the line they establish.

Can a garden flat in a converted SW house be extended?

Possibly, though flats lack householder permitted development rights.

Full planning consent and the freeholder’s licence are both required.

Which neighbours receive notices before footings are dug?

Owners sharing the boundary wall, plus those near the excavation.

Notice periods run one or two months, so we serve early.

How much does a wraparound cost across the SW postcodes?

Our 2026 cost guide gives £200k to £320k as a project total.

Professional fees and VAT come on top.

Tell us about your home in South West London.

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