Worcestershire
Rear extensions for detached houses in Worcestershire
Wider, deeper rear extensions with room for vaulted roofs and big glazing. Across Worcestershire we handle the whole rear extension: survey, drawings, the planning route, building control and the build. Towns we cover here include Worcester, Redditch and Kidderminster.
Detached houses in Worcestershire often have room for a deeper rear extension under England's prior approval route or a full-width design. Worcestershire has a lot of post-war semis and estate houses with long gardens and side access, which makes rear extensions quicker to build.
How much does a detached house rear extension cost in Worcestershire?
A detached house rear extension in Worcestershire is priced at £1,950–£3,200 per square metre including VAT as a guide, before kitchen fit-out and fees. The West Midlands is the baseline for our guide prices.
| Size | Guide price inc VAT |
|---|---|
| 4 m wide × 6 m deep (24 m²) | £47,000–£77,000 |
| 5 m wide × 8 m deep (40 m²) | £78,000–£128,000 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission in Worcestershire?
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.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent.
Where in Worcestershire do we work?
FAQ
Questions people ask
How deep can I extend a detached house?
4 metres under permitted development in England, or 8 metres with prior approval, outside designated land.
Can I have a vaulted ceiling?
Yes, with a pitched roof and exposed or boxed rafters, subject to the height limits.
Is an oak frame worth it?
It is a premium finish with a long life; it costs more than blockwork with a plain roof.
Do you cover all of Worcestershire?
We cover 8 towns and districts in Worcestershire, including Worcester, Redditch and Kidderminster.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.