Two-storey extensions in Dronfield
We design, get approval for and build two-storey extensions in Dronfield and the surrounding area. Choose the type of extension below or book a free site visit.
Dronfield at a glance
- Postcode districts
- S18
- Area
- Derbyshire, England
- Price region
- East Midlands
- Nearest towns
- Nether Edge (4 miles), Chesterfield (4.3 miles), Fulwood (4.5 miles), Sheffield (5.6 miles)
- Distance to Derby
- about 26.2 miles
- Approvals
- Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission.
Around Dronfield we also work in Nether Edge, Chesterfield and Fulwood, and across the rest of Derbyshire. Postcode district in and near Dronfield: S18.
Extensions available in Dronfield

Two-storey rear extensions
Design, approvals and build for Dronfield homes. Guide from £55,000.
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Two-storey side extensions
Our East Midlands guide starts at £84,500 for this type.
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Two-storey wraparound extensions
Guide from £118,000 in Dronfield, including VAT.
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Part single, part two-storey extensions
Guide from £70,500 in Dronfield, including VAT.
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Extensions over a garage
For homes in Dronfield: typical guide from £31,000.
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First-floor extensions
Design, approvals and build for Dronfield homes. Guide from £24,500.
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Two-storey extensions for semi-detached houses
Dronfield guide price from £55,000, Standard spec.
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Two-storey extensions for detached houses
For homes in Dronfield: typical guide from £84,500.
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Kitchen extensions with bedrooms above
From £55,000 (before kitchen units) in Dronfield. Free visit to firm it up.
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Extra bedroom and en-suite extensions
For homes in Dronfield: typical guide from £55,000 (plus en-suite).
Learn moreWhich type suits your house?
Which type suits your house in Dronfield depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
Also available in Derbyshire
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Party wall notices for extensions
- Design and build two-storey extensions
Rules for Dronfield
Dronfield is in England. Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission. Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
The full England rules explained
Questions about extensions in Dronfield
Do you cover Dronfield?
Yes. We cover Dronfield (S18) and the surrounding area, including Nether Edge and Chesterfield. The first site visit is free.
What does a two-storey extension cost in Dronfield?
Using our East Midlands guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £55,000–£74,000 including VAT. An extension over a garage is about £31,000–£45,000.
Which other places near Dronfield do you cover?
Everywhere around it, including Nether Edge (4 miles), Chesterfield (4.3 miles) and Fulwood (4.5 miles), and the rest of Derbyshire.