Two-storey extensions in Doncaster
Planning a bigger home in Doncaster? Compare extension types and guide prices below, then book a free site visit.
Doncaster at a glance
- Postcode districts
- DN1, DN2, DN4 and DN11
- Area
- South Yorkshire, England
- Price region
- Yorkshire and the Humber
- Nearest towns
- Bentley (1.1 miles), Armthorpe (3.3 miles), Kirk Sandall (3.7 miles), Adwick le Street (4 miles)
- Distance to Sheffield
- about 16.8 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 Doncaster (DN1, DN2, DN4 and DN11) and the places around it, including Bentley (1.1 miles), Armthorpe (3.3 miles) and Kirk Sandall.
Extensions available in Doncaster
Two-storey rear extensions
From £51,500 in Doncaster. Free visit to firm it up.
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Two-storey side extensions
Our Yorkshire and the Humber guide starts at £79,000 for this type.
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Two-storey wraparound extensions
Design, approvals and build for Doncaster homes. Guide from £111,000.
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Part single, part two-storey extensions
Our Yorkshire and the Humber guide starts at £66,000 for this type.
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Extensions over a garage
Design, approvals and build for Doncaster homes. Guide from £29,000.
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First-floor extensions
Doncaster guide price from £23,000, Standard spec.
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Two-storey extensions for semi-detached houses
Guide from £51,500 in Doncaster, including VAT.
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Two-storey extensions for detached houses
Our Yorkshire and the Humber guide starts at £79,000 for this type.
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Kitchen extensions with bedrooms above
From £51,500 (before kitchen units) in Doncaster. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Design, approvals and build for Doncaster homes. Guide from £51,500 (plus en-suite).
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in South Yorkshire, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
Also available in South Yorkshire
- 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 Doncaster
Doncaster 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 Doncaster
Do you cover Doncaster?
Yes. We cover Doncaster (DN1, DN2, DN4 and DN11) and the surrounding area, including Bentley and Armthorpe. The first site visit is free.
What does a two-storey extension cost in Doncaster?
Using our Yorkshire and the Humber 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 £51,500–£69,500 including VAT. An extension over a garage is about £29,000–£42,000.
Which other places near Doncaster do you cover?
Everywhere around it, including Bentley (1.1 miles), Armthorpe (3.3 miles) and Kirk Sandall (3.7 miles), and the rest of South Yorkshire.