Streetly, West Midlands
Two-storey rear extension in Streetly
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We design, get the approvals for and build two-storey rear extensions in Streetly and the surrounding area, with one contract from the first survey to building control sign-off.
Streetly sits in the West Midlands, with postcode districts including B44, B73 and B74. Two-storey rear extensions suit semi-detached houses in Streetly best, where the extra bedroom matters as much as the bigger kitchen.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a two-storey rear extension cost in Streetly?
For Streetly we work from the West Midlands rate: £1,800–£2,700 per square metre of new floor, including VAT, standard specification. The West Midlands is the baseline for our guide prices.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £54,000–£81,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £86,500–£129,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a two-storey rear extension in Streetly?
Here is how the rules in England apply to a two-storey rear extension in Streetly.
A two-storey rear extension can be permitted development in England only if it projects no more than 3 metres, stays at least 7 metres from the rear boundary, matches the existing roof pitch and has obscure-glazed upper side windows. In practice most double-storey rear extensions go through a householder planning application.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Streetly like to extend?
Red-brick terraces and 1930s semis make up much of Streetly. Many already have a small kitchen lean-to at the back, which a new rear extension usually replaces rather than adds to.
How a two-storey rear extension in Streetly comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Two-storey rear extensions near Streetly
Neighbouring places we cover include Aldridge (2.1 miles) and Sutton Coldfield (3.0 miles).
- Two-storey rear extension in Aldridge
- Two-storey rear extension in Sutton Coldfield
- Two-storey rear extension in Brownhills
- Two-storey rear extension in Walsall
- Two-storey rear extension in Pelsall
Other work in Streetly:
FAQ
Two-storey rear extension questions in Streetly
Do you handle building control in Streetly?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Does a two-storey rear extension need planning permission?
Almost always. England and Northern Ireland allow 3 metres without an application only if at least 7 metres remains to the rear boundary; Wales and Scotland are similar or stricter.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.