Two-storey extensions in Barnstaple
Everything for a two-storey extension in Barnstaple, in one place: types, guide prices for South West England, the approval rules in England and how to get started.
Barnstaple at a glance
- Postcode districts
- EX31, EX32 and EX37
- Area
- Devon, England
- Price region
- South West England
- Nearest towns
- Braunton (4.9 miles), Bideford (7.9 miles), Ilfracombe (9.2 miles), Minehead (26.4 miles)
- Distance to Plymouth
- about 49.1 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.
Barnstaple sits about 49.1 miles from Plymouth. Closer to home, Braunton is 4.9 miles away and Bideford 7.9 miles.
Extensions available in Barnstaple
Two-storey rear extensions
Barnstaple guide price from £57,500, Standard spec.
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Two-storey side extensions
Guide from £88,500 in Barnstaple, including VAT.
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Two-storey wraparound extensions
Guide from £124,000 in Barnstaple, including VAT.
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Part single, part two-storey extensions
Design, approvals and build for Barnstaple homes. Guide from £74,000.
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Extensions over a garage
Barnstaple guide price from £32,500, Standard spec.
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First-floor extensions
Design, approvals and build for Barnstaple homes. Guide from £26,000.
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Two-storey extensions for semi-detached houses
Guide from £57,500 in Barnstaple, including VAT.
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Two-storey extensions for detached houses
From £88,500 in Barnstaple. Free visit to firm it up.
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Kitchen extensions with bedrooms above
From £57,500 (before kitchen units) in Barnstaple. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Barnstaple guide price from £57,500 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
The boundaries usually decide it. Two-storey work close to a neighbour needs careful design for light and privacy, so at the visit in Barnstaple we measure distances to every boundary before suggesting a type.
Also available in Devon
- 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 Barnstaple
Barnstaple 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 Barnstaple
Do you cover Barnstaple?
Yes. We cover Barnstaple (EX31, EX32 and EX37) and the surrounding area, including Braunton and Bideford. The first site visit is free.
What does a two-storey extension cost in Barnstaple?
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 Barnstaple do you cover?
Everywhere around it, including Braunton (4.9 miles), Bideford (7.9 miles) and Ilfracombe (9.2 miles), and the rest of Devon.