Two-storey extensions in Hook
Homeowners in Hook can use us for the whole project or just the drawings and approvals. Start with a free visit.
Hook at a glance
- Postcode districts
- KT9
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Chessington (0.4 miles), Tolworth (1.4 miles), Surbiton (1.7 miles), Esher (2.6 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 postcode district KT9 in and around Hook, along with neighbouring Chessington, Tolworth and Surbiton.
Extensions available in Hook
Two-storey rear extensions
From £67,000 in Hook. Free visit to firm it up.
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Two-storey side extensions
From £103,500 in Hook. Free visit to firm it up.
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Two-storey wraparound extensions
Our London guide starts at £144,500 for this type.
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Part single, part two-storey extensions
Guide from £86,500 in Hook, including VAT.
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Extensions over a garage
From £38,000 in Hook. Free visit to firm it up.
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First-floor extensions
For homes in Hook: typical guide from £30,000.
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Two-storey extensions for semi-detached houses
Our London guide starts at £67,000 for this type.
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Two-storey extensions for detached houses
From £103,500 in Hook. Free visit to firm it up.
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Kitchen extensions with bedrooms above
From £67,000 (before kitchen units) in Hook. Free visit to firm it up.
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Extra bedroom and en-suite extensions
From £67,000 (plus en-suite) in Hook. Free visit to firm it up.
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Greater London, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
Also available in Greater London
- 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 Hook
Hook 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 Hook
Do you cover Hook?
Yes. We cover Hook (KT9) and the surrounding area, including Chessington and Tolworth. The first site visit is free.
What does a two-storey extension cost in Hook?
Using our London 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 £67,000–£90,500 including VAT. An extension over a garage is about £38,000–£55,000.
Which other places near Hook do you cover?
Everywhere around it, including Chessington (0.4 miles), Tolworth (1.4 miles) and Surbiton (1.7 miles), and the rest of Greater London.