Two-storey extensions in Shepton Mallet
Everything for a two-storey extension in Shepton Mallet, in one place: types, guide prices for South West England, the approval rules in England and how to get started.
Shepton Mallet at a glance
- Postcode districts
- BA4, BA7 and BA10
- Area
- Somerset, England
- Price region
- South West England
- Nearest towns
- Wells (4.6 miles), Midsomer Norton (7.1 miles), Street (9.5 miles), Frome (10.1 miles)
- Distance to Bath
- about 15.1 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.
Shepton Mallet sits about 15.1 miles from Bath. Closer to home, Wells is 4.6 miles away and Midsomer Norton 7.1 miles.
Extensions available in Shepton Mallet

Two-storey rear extensions
Guide from £57,500 in Shepton Mallet, including VAT.
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Two-storey side extensions
From £88,500 in Shepton Mallet. Free visit to firm it up.
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Two-storey wraparound extensions
From £124,000 in Shepton Mallet. Free visit to firm it up.
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Part single, part two-storey extensions
Our South West England guide starts at £74,000 for this type.
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Extensions over a garage
Shepton Mallet guide price from £32,500, Standard spec.
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First-floor extensions
For homes in Shepton Mallet: typical guide from £26,000.
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Two-storey extensions for semi-detached houses
From £57,500 in Shepton Mallet. Free visit to firm it up.
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Two-storey extensions for detached houses
For homes in Shepton Mallet: typical guide from £88,500.
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Kitchen extensions with bedrooms above
Design, approvals and build for Shepton Mallet homes. Guide from £57,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Design, approvals and build for Shepton Mallet homes. Guide from £57,500 (plus en-suite).
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 Somerset
- 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 Shepton Mallet
Shepton Mallet 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 Shepton Mallet
Do you cover Shepton Mallet?
Yes. We cover Shepton Mallet (BA4, BA7 and BA10) and the surrounding area, including Wells and Midsomer Norton. The first site visit is free.
What does a two-storey extension cost in Shepton Mallet?
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 Shepton Mallet do you cover?
Everywhere around it, including Wells (4.6 miles), Midsomer Norton (7.1 miles) and Street (9.5 miles), and the rest of Somerset.