England
Rear extensions in the West Midlands
Across the West Midlands we handle the whole rear extension: survey, drawings, the planning route, building control and the build. Towns we cover here include Birmingham, Coventry and Wolverhampton.
What are homes in the West Midlands like to extend?
Red-brick terraces and 1930s semis make up much of the West Midlands. Many already have a small kitchen lean-to at the back, which a new rear extension usually replaces rather than adds to.
Rear extension prices in the West Midlands
The West Midlands is the baseline for our guide prices. Per square metre including VAT, standard specification:
| Extension | Per m² |
|---|---|
| Single-storey rear extension | £1,900–£3,100 |
| Two-storey (per m² across both floors) | £1,800–£2,700 |
| Side return | £2,300–£3,800 |
| Wraparound | £2,200–£3,600 |
| Glass-led | £2,800–£4,800 |
Planning and building rules in the West Midlands
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is within 2 metres of a boundary.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
Planning and Building Regulations are separate in England: even a permitted development extension is inspected for foundations, drainage, structure, insulation, fire safety and ventilation, through the council or a registered building control approver, ending with a completion certificate.
Because rear extensions often sit on or near the boundary, the Party Wall etc. Act 1996 usually applies in England. Notices go out one or two months before work depending on the type of work, and a surveyor's award is only needed if a neighbour does not consent.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent.
Rear extensions we build in the West Midlands
- Building Regulations for rear extensions
- Single-storey rear extensions
- Two-storey rear extensions
- Kitchen-diner rear extensions
- Side return extensions
- Wraparound extensions
- Glazed and glass-box rear extensions
- Rear extensions for terraced houses
- Rear extensions for semi-detached houses
- Rear extensions for detached houses
- Rear extensions for bungalows
- Flat-roof rear extensions
- Pitched and lean-to roof rear extensions
- Knocking through to a rear extension
- Roof lanterns and rooflights for rear extensions
- Permitted development rear extensions
- Larger home extension prior approval (England)
- Rear extension plans and planning applications
Towns and districts in the West Midlands
The main places we cover in the West Midlands include Birmingham, Coventry and Wolverhampton, across postcode areas B, CV, DY, WS and WV.
| Town | Postcode districts | Nearest town we also cover |
|---|---|---|
| Birmingham | B6, B8, B19 | Aston (1.5 miles) |
| Coventry | CV2, CV3, CV4 | Kenilworth (4.9 miles) |
| Wolverhampton | WV2, WV3, WV4 | Wednesfield (1.8 miles) |
| Dudley | DY1, DY2, DY3 | Brierley Hill (2.0 miles) |
| Walsall | WS1, WS2, WS3 | Bloxwich (2.4 miles) |
| Solihull | B26, B27, B28 | Shirley (1.6 miles) |
| Sutton Coldfield | B72, B73, B75 | Streetly (3.0 miles) |
| West Bromwich | B66, B67, B69 | Oldbury (1.6 miles) |
| Halesowen | B62, B63, DY9 | Bartley Green (2.4 miles) |
| Stourbridge | DY5, DY8, DY9 | Brierley Hill (2.0 miles) |
- Birmingham
- Coventry
- Wolverhampton
- Dudley
- Walsall
- Solihull
- Sutton Coldfield
- West Bromwich
- Halesowen
- Stourbridge
- Smethwick
- Willenhall
- Tipton
- Bloxwich
- Wednesfield
- Washwood Heath
- Aston
- Shirley
- Brierley Hill
- Aldridge
- Acocks Green
- Bartley Green
- Wednesbury
- Kingswinford
- Hockley
- Wombourne
- Brownhills
- Chelmsley Wood
- Streetly
- Pelsall
- Oldbury
- Knowle
- Castle Vale
Areas near West Midlands
FAQ
Questions people ask
How much does a rear extension cost in the West Midlands?
As a guide, £1,900–£3,100 per square metre including VAT for a standard single-storey extension at West Midlands rates.
Do I need planning permission in the West Midlands?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Which towns in the West Midlands do you cover?
33 towns and districts, including Birmingham, Coventry and Wolverhampton.
Do you handle building control?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.