Two-storey extensions in Biggleswade
Need more room in Biggleswade? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Biggleswade at a glance
- Postcode districts
- SG18
- Area
- Bedfordshire, England
- Price region
- East of England
- Nearest towns
- Sandy (3.1 miles), Henlow (4 miles), Baldock (7.6 miles), Letchworth Garden City (7.6 miles)
- Distance to Luton
- about 15.7 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 Biggleswade (SG18) and the places around it, including Sandy (3.1 miles), Henlow (4.0 miles) and Baldock.
Extensions available in Biggleswade
Two-storey rear extensions
Our East of England guide starts at £57,500 for this type.
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Two-storey side extensions
Biggleswade guide price from £88,500, Standard spec.
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Two-storey wraparound extensions
Design, approvals and build for Biggleswade homes. Guide from £124,000.
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Part single, part two-storey extensions
Design, approvals and build for Biggleswade homes. Guide from £74,000.
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Extensions over a garage
Our East of England guide starts at £32,500 for this type.
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First-floor extensions
Design, approvals and build for Biggleswade homes. Guide from £26,000.
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Two-storey extensions for semi-detached houses
Our East of England guide starts at £57,500 for this type.
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Two-storey extensions for detached houses
Our East of England guide starts at £88,500 for this type.
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Kitchen extensions with bedrooms above
Biggleswade guide price from £57,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
From £57,500 (plus en-suite) in Biggleswade. Free visit to firm it up.
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Biggleswade, with a rough idea of the approval route and cost for each.
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 Biggleswade
Biggleswade 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 Biggleswade
Do you cover Biggleswade?
Yes. We cover Biggleswade (SG18) and the surrounding area, including Sandy and Henlow. The first site visit is free.
What does a two-storey extension cost in Biggleswade?
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 Biggleswade do you cover?
Everywhere around it, including Sandy (3.1 miles), Henlow (4 miles) and Baldock (7.6 miles), and the rest of Bedfordshire.