House extensions in Wimbledon
From a small utility to a two-storey addition, we take on house extensions throughout Wimbledon, starting with a free visit and a planning check.
- Postcode districtsCR4, SM4, SW17, SW18, SW19, SW20
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Planning and building control in Wimbledon
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.
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).
Wimbledon and surrounding towns
Our survey diary covers Wimbledon, including CR4, SM4, SW17, SW18, SW19, SW20. Neighbouring towns we cover include Morden (2 miles), Earlsfield (2 miles), Tooting (2 miles), Mitcham (2 miles), Roehampton (3 miles). For homes towards Surrey, Ewell is around 5 miles away.
Which extension suits a Wimbledon home?
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.
For many houses here, wraparound extensions, glass box extensions or kitchen extensions gives the most useful space for the budget.
Guide prices for Wimbledon
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) |
|---|---|---|
| Orangery extensions | 16 m² | £58,000 – £73,000 |
| Double-storey extensions | 32 m² | £74,500 – £98,000 |
| Kitchen extensions | 20 m² | £54,500 – £69,000 |
| Extensions over a garage | 12 m² | £32,500 – £42,500 |
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
All extension types we build in Wimbledon
- Annexe extensions · from £71,500
- Extensions over a garage · from £31,000
- Orangery extensions · from £39,000
- Building regulations for extensions · from £1,150
- Timber frame extensions · from £27,000
- Wraparound extensions · from £46,500
- Bungalow extensions · from £34,000
- Side extensions · from £28,500
- Single-storey rear extensions · from £27,000
- Utility and boot room extensions · from £18,000
- Planning permission for extensions · from £450
- Kitchen extensions · from £35,000
- Flat roof extensions · from £27,000
- Double-storey extensions · from £49,000
- Bedroom extensions · from £33,500
- Porch extensions · from £5,200
- Glass box extensions · from £39,000
- Extension plans and drawings · from £1,550
- Conservatory replacement extensions · from £26,000
- Pitched roof extensions · from £28,500
- Side return extensions · from £23,000
- Home office extensions · from £20,500
Free site visit
We visit your Wimbledon 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
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Wimbledon
How much does an extension cost in Wimbledon?
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.
Do you cover all of Wimbledon?
Yes, including the surrounding parts of Greater London. Site visits are free and there is no obligation.
Do I need planning permission for an extension in Wimbledon?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Wimbledon, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Wimbledon
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.