Two-storey extensions in Chesterfield
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Chesterfield.
Chesterfield at a glance
- Postcode districts
- S40, S41 and S42
- Area
- Derbyshire, England
- Price region
- East Midlands
- Nearest towns
- Staveley (3 miles), Dronfield (4.3 miles), Bolsover (5.4 miles), Killamarsh (6.6 miles)
- Distance to Derby
- about 22.7 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.
We cover postcode districts S40, S41 and S42 in and around Chesterfield, along with neighbouring Staveley, Dronfield and Bolsover.
Extensions available in Chesterfield

Two-storey rear extensions
Our East Midlands guide starts at £55,000 for this type.
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Two-storey side extensions
Guide from £84,500 in Chesterfield, including VAT.
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Two-storey wraparound extensions
Our East Midlands guide starts at £118,000 for this type.
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Part single, part two-storey extensions
From £70,500 in Chesterfield. Free visit to firm it up.
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Extensions over a garage
Guide from £31,000 in Chesterfield, including VAT.
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First-floor extensions
Our East Midlands guide starts at £24,500 for this type.
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Two-storey extensions for semi-detached houses
For homes in Chesterfield: typical guide from £55,000.
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Two-storey extensions for detached houses
Design, approvals and build for Chesterfield homes. Guide from £84,500.
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Kitchen extensions with bedrooms above
Our East Midlands guide starts at £55,000 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
Chesterfield guide price from £55,000 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Derbyshire, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
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 Chesterfield
Chesterfield 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 Chesterfield
Do you cover Chesterfield?
Yes. We cover Chesterfield (S40, S41 and S42) and the surrounding area, including Staveley and Dronfield. The first site visit is free.
What does a two-storey extension cost in Chesterfield?
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 Chesterfield do you cover?
Everywhere around it, including Staveley (3 miles), Dronfield (4.3 miles) and Bolsover (5.4 miles), and the rest of Derbyshire.