Two-storey extensions in Sherborne
Homeowners in Sherborne can use us for the whole project or just the drawings and approvals. Start with a free visit.
Sherborne at a glance
- Postcode districts
- DT9 and DT10
- Area
- Dorset, England
- Price region
- South West England
- Nearest towns
- Yeovil (5 miles), Street (15.7 miles), Dorchester (16.3 miles), Blandford Forum (16.6 miles)
- Distance to Bournemouth
- about 31.9 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.
Sherborne sits about 31.9 miles from Bournemouth. Closer to home, Yeovil is 5.0 miles away and Street 15.7 miles.
Extensions available in Sherborne
Two-storey rear extensions
Our South West England guide starts at £57,500 for this type.
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Two-storey side extensions
Sherborne guide price from £88,500, Standard spec.
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Two-storey wraparound extensions
Design, approvals and build for Sherborne homes. Guide from £124,000.
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Part single, part two-storey extensions
For homes in Sherborne: typical guide from £74,000.
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Extensions over a garage
Our South West England guide starts at £32,500 for this type.
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First-floor extensions
From £26,000 in Sherborne. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
From £57,500 in Sherborne. Free visit to firm it up.
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Two-storey extensions for detached houses
Our South West England guide starts at £88,500 for this type.
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Kitchen extensions with bedrooms above
For homes in Sherborne: typical guide from £57,500 (before kitchen units).
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Extra bedroom and en-suite extensions
From £57,500 (plus en-suite) in Sherborne. Free visit to firm it up.
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
Also available in Dorset
- 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 Sherborne
Sherborne 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 Sherborne
Do you cover Sherborne?
Yes. We cover Sherborne (DT9 and DT10) and the surrounding area, including Yeovil and Street. The first site visit is free.
What does a two-storey extension cost in Sherborne?
Using our South West England 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 £57,500–£78,000 including VAT. An extension over a garage is about £32,500–£47,500.
Which other places near Sherborne do you cover?
Everywhere around it, including Yeovil (5 miles), Street (15.7 miles) and Dorchester (16.3 miles), and the rest of Dorset.