Roehampton house extensions
More space without moving: we plan and build extensions across Roehampton, with one team for the drawings, the council and the build.
- Postcode districtsSW13, SW14, SW15
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Which extension suits a Roehampton 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, kitchen extensions, wraparound extensions or glass box extensions gives the most useful space for the budget.
Planning and building control in Roehampton
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).
Popular extension prices in Roehampton
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) |
|---|---|---|
| Double-storey extensions | 32 m² | £74,500 – £98,000 |
| Side return extensions | 11 m² | £34,000 – £43,000 |
| Extensions over a garage | 12 m² | £32,500 – £42,500 |
| Kitchen extensions | 20 m² | £54,500 – £69,000 |
| Conservatory replacement extensions | 14 m² | £39,000 – £50,500 |
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
| Orangery extensions | 16 m² | £58,000 – £73,000 |
Roehampton and surrounding towns
Across SW13, SW14, SW15, we can visit, measure and advise. We also work in nearby Putney (1 mile), Barnes (2 miles), Wimbledon (3 miles), Earlsfield (3 miles), Fulham (3 miles). Just over the Surrey border, East Molesey is about 6 miles away.
All extension types we build in Roehampton
- Utility and boot room extensions · from £18,000
- Porch extensions · from £5,200
- Orangery extensions · from £39,000
- Pitched roof extensions · from £28,500
- Kitchen extensions · from £35,000
- Side return extensions · from £23,000
- Glass box extensions · from £39,000
- Bungalow extensions · from £34,000
- Extensions over a garage · from £31,000
- Side extensions · from £28,500
- Flat roof extensions · from £27,000
- Bedroom extensions · from £33,500
- Wraparound extensions · from £46,500
- Annexe extensions · from £71,500
- Double-storey extensions · from £49,000
- Extension plans and drawings · from £1,550
- Conservatory replacement extensions · from £26,000
- Building regulations for extensions · from £1,150
- Timber frame extensions · from £27,000
- Single-storey rear extensions · from £27,000
- Planning permission for extensions · from £450
- Home office extensions · from £20,500
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
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 Roehampton
How much does an extension cost in Roehampton?
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 Roehampton?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Roehampton, 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 you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Roehampton
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.