Derby, Derbyshire
Bungalow rear extension in Derby
For homes in Derby, a bungalow rear extension is often the simplest way to gain space without moving. Single-storey rear extensions that keep everything on one level. We take it from survey to completion certificate.
Derby is covered from our Derbyshire round, including DE1, DE3, DE21 and DE22. For Derby bungalows we design the roof first, because the low eaves decide the height of the new room.
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 bungalow rear extension cost in Derby?
Guide prices for a bungalow rear extension in Derby start from our East Midlands rate of £1,790–£2,910 per square metre, including VAT. East Midlands prices sit a little below our West Midlands baseline.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £21,500–£35,000 |
| 4 m wide × 6 m deep (24 m²) | £43,000–£70,000 |
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 bungalow rear extension in Derby?
Planning for a bungalow rear extension in Derby follows the English householder rules.
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.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Derby like to extend?
Derby has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both.
How a bungalow rear extension in Derby 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.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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.
Bungalow rear extensions near Derby
Close by, we work in Chaddesden, about 1.8 miles away, and Oakwood, about 2.4 miles away.
- Bungalow rear extension in Chaddesden
- Bungalow rear extension in Oakwood
- Bungalow rear extension in Sinfin
- Bungalow rear extension in Belper
- Bungalow rear extension in Ilkeston
Other work in Derby:
FAQ
Bungalow rear extension questions in Derby
What postcode areas do you cover around Derby?
Including DE1, DE3, DE21, DE22, DE23 and DE24, and the surrounding Derbyshire area.
How much does a bungalow rear extension cost in Derby?
As a guide, £1,790–£2,910 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £21,500–£35,000 at that rate. Your written price follows the survey.
Can I extend the loft as well?
Sometimes, but that is a different project; a rear extension keeps everything on one level.
Do you handle building control in Derby?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
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.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.