Extending your home in Fulham
Every type of house extension in Fulham, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsSW5, SW6, SW10, W6, W8, W14
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Planning and building control in Fulham
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a single-storey side extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
Popular extension prices in Fulham
Use these Fulham guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £74,500 – £98,000 |
| Wraparound extensions | 25 m² | £74,500 – £94,500 |
| Kitchen extensions | 20 m² | £54,500 – £69,000 |
| Conservatory replacement extensions | 14 m² | £39,000 – £50,500 |
| Side return extensions | 11 m² | £34,000 – £43,000 |
| Orangery extensions | 16 m² | £58,000 – £73,000 |
Covering Fulham and nearby
Site visits are available across Fulham (SW5, SW6, SW10, W6, W8, W14). Neighbouring towns we cover include Chelsea (1 mile), Putney (2 miles), Battersea (2 miles), Shepherds Bush (2 miles), Barnes (2 miles). Just over the Surrey border, East Molesey is about 9 miles away.
What works best for Fulham houses?
In London, space is at a premium and gardens are often short, so side returns, wraparounds and carefully planned rear extensions tend to make the most of every metre.
The types we would usually look at first for a home in Fulham are kitchen extensions, side return extensions and glass box extensions, depending on the garden and how the house is laid out.
Extension types and starting prices
- Wraparound extensions · from £46,500
- Extension plans and drawings · from £1,550
- Utility and boot room extensions · from £18,000
- Annexe extensions · from £71,500
- Double-storey extensions · from £49,000
- Pitched roof extensions · from £28,500
- Building regulations for extensions · from £1,150
- Orangery extensions · from £39,000
- Flat roof extensions · from £27,000
- Extensions over a garage · from £31,000
- Side return extensions · from £23,000
- Bungalow extensions · from £34,000
- Glass box extensions · from £39,000
- Single-storey rear extensions · from £27,000
- Bedroom extensions · from £33,500
- Conservatory replacement extensions · from £26,000
- Planning permission for extensions · from £450
- Timber frame extensions · from £27,000
- Side extensions · from £28,500
- Home office extensions · from £20,500
- Kitchen extensions · from £35,000
- Porch extensions · from £5,200
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions about extensions in Fulham
How much does an extension cost in Fulham?
Using our London factor (×1.3), a standard-spec single-storey extension of 20 m² is a guide £53,000 to £68,000 including VAT, and a 32 m² two-storey extension £74,500 to £98,000. Your written price follows the survey.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Fulham, and the guide-price tool gives a range for your own size and finish in about a minute.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Do I need planning permission for an extension in Fulham?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
How long does an extension take in Fulham?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Book a free site visit in Fulham
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.