Derbyshire
Rear extensions in Dronfield
From the first measured visit to building control sign-off, we handle rear extensions in Dronfield under one contract.
Dronfield is in Derbyshire, with postcode districts including S18. The nearest places we also cover are Nether Edge (4.0 miles) and Chesterfield (4.3 miles).
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
Rear extensions we build in Dronfield
- 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 bungalows
- Rear extension plans and planning applications
Also available across Derbyshire:
- Rear extensions for detached houses
- 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)
- Building Regulations for rear extensions
Rear extension prices in Dronfield
East Midlands prices sit a little below our West Midlands baseline.
| Example | Guide inc VAT |
|---|---|
| Single-storey, 3 m × 4 m (12 m²) | £22,000–£36,000 |
| Single-storey, 4 m × 6 m (24 m²) | £44,000–£72,000 |
| Two-storey, 3 m × 5 m footprint (30 m²) | £52,500–£78,500 |
| Side return, about 14 m² | £31,000–£51,500 |
| Wraparound, about 25 m² | £53,500–£87,500 |
What are homes in Dronfield like to extend?
Red-brick terraces and semis are typical of Dronfield. Coal-mining legacy areas in parts of the East Midlands can need a Coal Authority check before foundations are designed.
Planning rules for 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.
Every rear extension in England needs Building Regulations approval, whether or not planning is needed. You can use the council's building control service or a registered building control approver, by full plans (checked before work, usually within five weeks) or a building notice, and you get a completion certificate at the end.
Nearby towns
FAQ
Questions people ask
How much is a rear extension in Dronfield?
A 3 m × 4 m single-storey rear extension is about £22,000–£36,000 including VAT at our East Midlands guide rates; the written price follows a survey.
Do I need planning permission in Dronfield?
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.
Is the site visit in Dronfield free?
Yes, with no obligation.
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.