Two-storey extensions in Henlow
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Henlow.
Henlow at a glance
- Postcode districts
- SG15, SG16 and SG17
- Area
- Bedfordshire, England
- Price region
- East of England
- Nearest towns
- Biggleswade (4 miles), Letchworth Garden City (4.3 miles), Baldock (5.1 miles), Hitchin (5.6 miles)
- Distance to Luton
- about 11.8 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.
Henlow sits about 11.8 miles from Luton. Closer to home, Biggleswade is 4.0 miles away and Letchworth Garden City 4.3 miles.
Extensions available in Henlow
Two-storey rear extensions
From £57,500 in Henlow. Free visit to firm it up.
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Two-storey side extensions
From £88,500 in Henlow. Free visit to firm it up.
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Two-storey wraparound extensions
Design, approvals and build for Henlow homes. Guide from £124,000.
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Part single, part two-storey extensions
Guide from £74,000 in Henlow, including VAT.
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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
Henlow guide price from £26,000, Standard spec.
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Two-storey extensions for semi-detached houses
Guide from £57,500 in Henlow, including VAT.
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Two-storey extensions for detached houses
Design, approvals and build for Henlow homes. Guide from £88,500.
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Kitchen extensions with bedrooms above
Guide from £57,500 (before kitchen units) in Henlow, including VAT.
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Extra bedroom and en-suite extensions
Design, approvals and build for Henlow homes. Guide from £57,500 (plus en-suite).
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 Henlow, 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 Henlow
Henlow 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 Henlow
Do you cover Henlow?
Yes. We cover Henlow (SG15, SG16 and SG17) and the surrounding area, including Biggleswade and Letchworth Garden City. The first site visit is free.
What does a two-storey extension cost in Henlow?
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 Henlow do you cover?
Everywhere around it, including Biggleswade (4 miles), Letchworth Garden City (4.3 miles) and Baldock (5.1 miles), and the rest of Bedfordshire.