Home extensions in Stratford-upon-Avon
We design and build house extensions for homes in Stratford-upon-Avon and the surrounding Warwickshire area, with guide prices adjusted for the region.
- Postcode districtsCV37
- Price regionWest Midlands (×0.97)
- Planning rulesEngland
- Site visitFree, no obligation
Popular extension prices in Stratford-upon-Avon
Prices on this page use our West Midlands factor of ×0.97, 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 | £40,500 – £51,500 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Double-storey extensions | 32 m² | £55,500 – £73,000 |
| Extensions over a garage | 12 m² | £24,000 – £31,500 |
| Orangery extensions | 16 m² | £43,000 – £54,500 |
| Wraparound extensions | 25 m² | £55,500 – £70,500 |
| Conservatory replacement extensions | 14 m² | £29,000 – £37,500 |
Do extensions in Stratford-upon-Avon need planning permission?
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).
What works best for Stratford-upon-Avon houses?
Across the West Midlands, brick-built semis with long gardens are common, so single-storey and two-storey rear extensions are popular choices.
Depending on the plot, kitchen extensions and extensions over a garage are often the strongest options, with single-storey rear extensions worth considering where there is room.
Covering Stratford-upon-Avon and nearby
Our survey diary covers Stratford-upon-Avon, including CV37. The same team covers Warwick (8 miles), Leamington Spa (10 miles), Kenilworth (12 miles), Bedworth (22 miles), Rugby (22 miles), all within easy reach. Just over the Worcestershire border, Evesham is about 12 miles away.
Extension types and starting prices
- Pitched roof extensions · from £21,500
- Building regulations for extensions · from £850
- Porch extensions · from £3,850
- Wraparound extensions · from £34,500
- Extension plans and drawings · from £1,150
- Orangery extensions · from £29,000
- Bungalow extensions · from £25,000
- Home office extensions · from £15,500
- Utility and boot room extensions · from £13,500
- Glass box extensions · from £29,000
- Annexe extensions · from £53,000
- Single-storey rear extensions · from £20,000
- Bedroom extensions · from £25,000
- Kitchen extensions · from £26,000
- Double-storey extensions · from £36,500
- Timber frame extensions · from £20,000
- Flat roof extensions · from £20,000
- Side return extensions · from £17,000
- Extensions over a garage · from £23,000
- Conservatory replacement extensions · from £19,000
- Planning permission for extensions · from £300
- Side extensions · from £21,000
Free site visit
We visit your Stratford-upon-Avon 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
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Stratford-upon-Avon
How much does an extension cost in Stratford-upon-Avon?
Using our West Midlands factor (×0.97), a standard-spec single-storey extension of 20 m² is a guide £39,500 to £50,500 including VAT, and a 32 m² two-storey extension £55,500 to £73,000. Your written price follows the survey.
Do you cover all of Stratford-upon-Avon?
Yes, including the surrounding parts of Warwickshire. Site visits are free and there is no obligation.
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.
How long does an extension take in Stratford-upon-Avon?
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.
Book a free site visit in Stratford-upon-Avon
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.