Dronfield, Derbyshire
Single-storey rear extension in Dronfield
Ground-floor space across the back of the house, usually for a kitchen, dining or family room. If you live in Dronfield and want to know what a single-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Dronfield sits in Derbyshire, with postcode districts including S18. On inter-war semis and bungalows like those around Dronfield, a single-storey rear extension is usually the simplest way to fix a small back kitchen without touching the bedrooms.
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 single-storey rear extension cost in Dronfield?
A single-storey rear extension in Dronfield is priced at £1,840–£3,010 per square metre including VAT as a guide, before kitchen fit-out and fees. East Midlands prices sit a little below our West Midlands baseline.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £22,000–£36,000 |
| 4 m wide × 5 m deep (20 m²) | £37,000–£60,000 |
| 4 m wide × 6 m deep (24 m²) | £44,000–£72,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a single-storey rear extension in Dronfield?
Here is how the rules in England apply to a single-storey rear extension in Dronfield.
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.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Dronfield like to extend?
Dronfield has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both.
How a single-storey rear extension in Dronfield comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
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.
Single-storey rear extensions near Dronfield
From Dronfield, the nearest places we also cover are Nether Edge (4.0 miles) and Chesterfield (4.3 miles).
- Single-storey rear extension in Nether Edge
- Single-storey rear extension in Chesterfield
- Single-storey rear extension in Fulwood
- Single-storey rear extension in Sheffield
- Single-storey rear extension in Staveley
Other work in Dronfield:
FAQ
Single-storey rear extension questions in Dronfield
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.
Can you match the brick or stone on my Dronfield house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Is a flat roof or a pitched roof better?
A warm flat roof keeps the extension low under first-floor windows and suits a roof lantern; a pitched or lean-to roof gives a vaulted ceiling. Both last for decades when built properly.
What postcode areas do you cover around Dronfield?
Including S18, and the surrounding Derbyshire area.
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.
Is the site visit in Dronfield free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.