Home extensions in Leamington Spa
From a small utility to a two-storey addition, we take on house extensions throughout Leamington Spa, starting with a free visit and a planning check.
- Postcode districtsCV31, CV32, CV33, CV34
- Price regionWest Midlands (×0.97)
- Planning rulesEngland
- Site visitFree, no obligation
What works best for Leamington Spa houses?
Across the West Midlands, brick-built semis with long gardens are common, so single-storey and two-storey rear extensions are popular choices.
Start by comparing single-storey rear extensions, double-storey extensions and extensions over a garage: between them they cover most of the layouts we see requested for houses like these.
Guide prices for Leamington Spa
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) |
|---|---|---|
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Double-storey extensions | 32 m² | £55,500 – £73,000 |
| Orangery extensions | 16 m² | £43,000 – £54,500 |
| Single-storey rear extensions | 20 m² | £39,500 – £50,500 |
| Kitchen extensions | 20 m² | £40,500 – £51,500 |
| Wraparound extensions | 25 m² | £55,500 – £70,500 |
| Conservatory replacement extensions | 14 m² | £29,000 – £37,500 |
Areas we cover around Leamington Spa
Our survey diary covers Leamington Spa, including CV31, CV32, CV33, CV34. Nearby, we also take on projects in Warwick (3 miles), Kenilworth (5 miles), Stratford-upon-Avon (10 miles), Rugby (12 miles), Bedworth (14 miles). Just over the West Midlands border, Coventry is about 8 miles away.
Planning rules in Leamington Spa
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).
Every extension type in Leamington Spa
- Extension plans and drawings · from £1,150
- Porch extensions · from £3,850
- Bungalow extensions · from £25,000
- Double-storey extensions · from £36,500
- Kitchen extensions · from £26,000
- Pitched roof extensions · from £21,500
- Bedroom extensions · from £25,000
- Single-storey rear extensions · from £20,000
- Side return extensions · from £17,000
- Orangery extensions · from £29,000
- Flat roof extensions · from £20,000
- Utility and boot room extensions · from £13,500
- Extensions over a garage · from £23,000
- Conservatory replacement extensions · from £19,000
- Building regulations for extensions · from £850
- Timber frame extensions · from £20,000
- Glass box extensions · from £29,000
- Side extensions · from £21,000
- Planning permission for extensions · from £300
- Wraparound extensions · from £34,500
- Home office extensions · from £15,500
- Annexe extensions · from £53,000
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
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 Leamington Spa
How much does an extension cost in Leamington Spa?
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.
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 I need planning permission for an extension in Leamington Spa?
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.
Do you cover all of Leamington Spa?
Yes, including the surrounding parts of Warwickshire. Site visits are free and there is no obligation.
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 Leamington Spa
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.