Two-storey extensions in Dunstable
Need more room in Dunstable? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Dunstable at a glance
- Postcode districts
- LU5 and LU6
- Area
- Bedfordshire, England
- Price region
- East of England
- Nearest towns
- Luton (4.5 miles), Leighton Buzzard (6.2 miles), Flitwick (8.2 miles), Harpenden (8.5 miles)
- Distance to Luton
- about 4.5 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.
Around Dunstable we also work in Luton, Leighton Buzzard and Flitwick, and across the rest of Bedfordshire. Postcode districts in and near Dunstable: LU5 and LU6.
Extensions available in Dunstable
Two-storey rear extensions
Dunstable guide price from £57,500, Standard spec.
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Two-storey side extensions
Guide from £88,500 in Dunstable, including VAT.
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Two-storey wraparound extensions
Our East of England guide starts at £124,000 for this type.
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Part single, part two-storey extensions
Design, approvals and build for Dunstable homes. Guide from £74,000.
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Extensions over a garage
Design, approvals and build for Dunstable homes. Guide from £32,500.
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First-floor extensions
Design, approvals and build for Dunstable homes. Guide from £26,000.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Dunstable homes. Guide from £57,500.
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Two-storey extensions for detached houses
Guide from £88,500 in Dunstable, including VAT.
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Kitchen extensions with bedrooms above
Design, approvals and build for Dunstable homes. Guide from £57,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Design, approvals and build for Dunstable homes. Guide from £57,500 (plus en-suite).
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 Dunstable we measure distances to every boundary before suggesting a type.
Also available in Bedfordshire
- 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 Dunstable
Dunstable 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 Dunstable
Do you cover Dunstable?
Yes. We cover Dunstable (LU5 and LU6) and the surrounding area, including Luton and Leighton Buzzard. The first site visit is free.
What does a two-storey extension cost in Dunstable?
Using our East of 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 Dunstable do you cover?
Everywhere around it, including Luton (4.5 miles), Leighton Buzzard (6.2 miles) and Flitwick (8.2 miles), and the rest of Bedfordshire.