Tooting house extensions
Looking to extend your home in Tooting? Start here: extension types, guide prices for Tooting, the planning rules that apply and how a project runs.
- Postcode districtsCR4, SW12, SW16, SW17, SW19
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Covering Tooting and nearby
Site visits are available across Tooting (CR4, SW12, SW16, SW17, SW19). Nearby, we also take on projects in Streatham (1 mile), Mitcham (2 miles), Earlsfield (2 miles), Wimbledon (2 miles), Norbury (2 miles). Ewell, in Surrey, is roughly 6 miles from Tooting and also on our list.
Which extension suits a Tooting home?
Across London, terraced houses with narrow side returns and tight access are the norm, which shapes everything from party wall notices to how materials reach the back garden.
The types we would usually look at first for a home in Tooting are glass box extensions, kitchen extensions and wraparound extensions, depending on the garden and how the house is laid out.
Tooting extension prices at a glance
Use these Tooting 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) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £39,000 – £50,500 |
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
| Extensions over a garage | 12 m² | £32,500 – £42,500 |
| Side return extensions | 11 m² | £34,000 – £43,000 |
| Kitchen extensions | 20 m² | £54,500 – £69,000 |
| Orangery extensions | 16 m² | £58,000 – £73,000 |
Approvals for an extension in Tooting
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.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
Every extension type in Tooting
- Building regulations for extensions · from £1,150
- Wraparound extensions · from £46,500
- Timber frame extensions · from £27,000
- Pitched roof extensions · from £28,500
- Bungalow extensions · from £34,000
- Double-storey extensions · from £49,000
- Extension plans and drawings · from £1,550
- Utility and boot room extensions · from £18,000
- Single-storey rear extensions · from £27,000
- Planning permission for extensions · from £450
- Home office extensions · from £20,500
- Annexe extensions · from £71,500
- Porch extensions · from £5,200
- Conservatory replacement extensions · from £26,000
- Side extensions · from £28,500
- Orangery extensions · from £39,000
- Bedroom extensions · from £33,500
- Flat roof extensions · from £27,000
- Glass box extensions · from £39,000
- Extensions over a garage · from £31,000
- Kitchen extensions · from £35,000
- Side return extensions · from £23,000
Free site visit
We visit your Tooting home, measure up, talk through what you want and check the planning position.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
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 Tooting
How much does an extension cost in Tooting?
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.
How long does an extension take in Tooting?
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Do I need planning permission for an extension in Tooting?
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.
Book a free site visit in Tooting
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.