Home extensions in Coventry
Planning an extension in Coventry? Compare extension types, see guide prices adjusted for Coventry and book a free site visit.
- Postcode districtsCV1, CV2, CV3, CV4, CV5, CV6
- Price regionWest Midlands (×0.97)
- Planning rulesEngland
- Site visitFree, no obligation
Approvals for an extension in Coventry
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).
What extensions cost in Coventry
Use these Coventry guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £29,000 – £37,500 |
| Double-storey extensions | 32 m² | £55,500 – £73,000 |
| Extensions over a garage | 12 m² | £24,000 – £31,500 |
| Kitchen extensions | 20 m² | £40,500 – £51,500 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Single-storey rear extensions | 20 m² | £39,500 – £50,500 |
| Orangery extensions | 16 m² | £43,000 – £54,500 |
What works best for Coventry 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 extensions over a garage, single-storey rear extensions and double-storey extensions: between them they cover most of the layouts we see requested for houses like these.
Coventry and surrounding towns
Site visits are available across Coventry (CV1, CV2, CV3, CV4, CV5, CV6). Nearby, we also take on projects in Solihull (11 miles), Shirley (13 miles), Sutton Coldfield (17 miles), Birmingham (17 miles), Smethwick (20 miles). Just over the Warwickshire border, Kenilworth is about 5 miles away.
All extension types we build in Coventry
- Timber frame extensions · from £20,000
- Bungalow extensions · from £25,000
- Extensions over a garage · from £23,000
- Utility and boot room extensions · from £13,500
- Bedroom extensions · from £25,000
- Flat roof extensions · from £20,000
- Building regulations for extensions · from £850
- Extension plans and drawings · from £1,150
- Single-storey rear extensions · from £20,000
- Side return extensions · from £17,000
- Home office extensions · from £15,500
- Kitchen extensions · from £26,000
- Orangery extensions · from £29,000
- Planning permission for extensions · from £300
- Side extensions · from £21,000
- Pitched roof extensions · from £21,500
- Annexe extensions · from £53,000
- Double-storey extensions · from £36,500
- Porch extensions · from £3,850
- Conservatory replacement extensions · from £19,000
- Glass box extensions · from £29,000
- Wraparound extensions · from £34,500
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
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 Coventry
How much does an extension cost in Coventry?
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 I need planning permission for an extension in Coventry?
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 Coventry?
Yes, including the surrounding parts of West Midlands. 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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Coventry, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Coventry
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.