Extensions in Weybridge: design, planning and build
From a small utility to a two-storey addition, we take on house extensions throughout Weybridge, starting with a free visit and a planning check.
- Postcode districtsKT13, KT15, TW17
- Price regionSouth East England (×1.12)
- Planning rulesEngland
- Site visitFree, no obligation
Choosing the right extension in Weybridge
In the South East, plenty of houses have already been extended once, which makes checking the remaining permitted development allowance an important early step.
The types we would usually look at first for a home in Weybridge are double-storey extensions, wraparound extensions and single-storey rear extensions, depending on the garden and how the house is laid out.
Guide prices for Weybridge
We publish guide prices so you can budget before anyone visits. For Weybridge they are adjusted by ×1.12, the factor we use across South East England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Kitchen extensions | 20 m² | £47,000 – £59,500 |
| Wraparound extensions | 25 m² | £64,000 – £81,500 |
| Conservatory replacement extensions | 14 m² | £33,500 – £43,500 |
| Orangery extensions | 16 m² | £50,000 – £63,000 |
| Double-storey extensions | 32 m² | £64,500 – £84,500 |
| Side return extensions | 11 m² | £29,500 – £37,000 |
| Single-storey rear extensions | 20 m² | £45,500 – £58,500 |
Planning rules in Weybridge
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).
Areas we cover around Weybridge
Postcode districts we cover around Weybridge include KT13, KT15, TW17. Neighbouring towns we cover include Walton-on-Thames (2 miles), Sunbury-on-Thames (3 miles), West Molesey (4 miles), Esher (4 miles), Ashford, Surrey (4 miles). Hampton, in Greater London, is roughly 5 miles from Weybridge and also on our list.
All extension types we build in Weybridge
- Conservatory replacement extensions · from £22,000
- Orangery extensions · from £33,500
- Single-storey rear extensions · from £23,500
- Annexe extensions · from £61,500
- Extension plans and drawings · from £1,300
- Bedroom extensions · from £29,000
- Bungalow extensions · from £29,000
- Double-storey extensions · from £42,500
- Glass box extensions · from £33,500
- Kitchen extensions · from £30,000
- Side return extensions · from £20,000
- Pitched roof extensions · from £24,500
- Utility and boot room extensions · from £15,500
- Wraparound extensions · from £40,000
- Flat roof extensions · from £23,500
- Planning permission for extensions · from £350
- Building regulations for extensions · from £1,000
- Timber frame extensions · from £23,500
- Porch extensions · from £4,450
- Side extensions · from £24,500
- Home office extensions · from £17,500
- Extensions over a garage · from £26,500
Free site visit
We visit your Weybridge 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 Weybridge
How much does an extension cost in Weybridge?
Using our South East England factor (×1.12), a standard-spec single-storey extension of 20 m² is a guide £45,500 to £58,500 including VAT, and a 32 m² two-storey extension £64,500 to £84,500. Your written price follows the survey.
How long does an extension take in Weybridge?
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 cover all of Weybridge?
Yes, including the surrounding parts of Surrey. Site visits are free and there is no obligation.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Weybridge, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Weybridge
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.