Battersea house extensions
Looking to extend your home in Battersea? Start here: extension types, guide prices for Battersea, the planning rules that apply and how a project runs.
- Postcode districtsSW1W, SW3, SW4, SW8, SW10, SW11
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Battersea and surrounding towns
We cover Battersea and the postcode districts SW1W, SW3, SW4, SW8, SW10, SW11. Nearby, we also take on projects in Chelsea (1 mile), Fulham (2 miles), Brixton (2 miles), Earlsfield (2 miles), Putney (3 miles). For homes towards Surrey, Ewell is around 10 miles away.
Approvals for an extension in Battersea
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 two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
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 Battersea
Prices on this page use our London factor of ×1.3, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Kitchen extensions | 20 m² | £54,500 – £69,000 |
| Extensions over a garage | 12 m² | £32,500 – £42,500 |
| Wraparound extensions | 25 m² | £74,500 – £94,500 |
| Orangery extensions | 16 m² | £58,000 – £73,000 |
| Double-storey extensions | 32 m² | £74,500 – £98,000 |
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
Choosing the right extension in Battersea
London's housing is dominated by Victorian and Edwardian terraces, many with a rear outrigger and a side return, and 1930s semis in the outer boroughs. Conservation areas are common, so the planning check comes first.
Depending on the plot, side return extensions and glass box extensions are often the strongest options, with wraparound extensions worth considering where there is room.
Every extension type in Battersea
- Double-storey extensions · from £49,000
- Timber frame extensions · from £27,000
- Orangery extensions · from £39,000
- Side return extensions · from £23,000
- Utility and boot room extensions · from £18,000
- Kitchen extensions · from £35,000
- Pitched roof extensions · from £28,500
- Conservatory replacement extensions · from £26,000
- Planning permission for extensions · from £450
- Porch extensions · from £5,200
- Wraparound extensions · from £46,500
- Extensions over a garage · from £31,000
- Side extensions · from £28,500
- Extension plans and drawings · from £1,550
- Home office extensions · from £20,500
- Annexe extensions · from £71,500
- Flat roof extensions · from £27,000
- Bungalow extensions · from £34,000
- Single-storey rear extensions · from £27,000
- Bedroom extensions · from £33,500
- Glass box extensions · from £39,000
- Building regulations for extensions · from £1,150
Free site visit
We visit your Battersea home, measure up, talk through what you want and check the planning position.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Battersea
How much does an extension cost in Battersea?
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 Battersea, and the guide-price tool gives a range for your own size and finish in about a minute.
Do I need planning permission for an extension in Battersea?
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.
Do you cover all of Battersea?
Yes, including the surrounding parts of Greater London. Site visits are free and there is no obligation.
Book a free site visit in Battersea
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.