Two-storey extensions in Kingston upon Thames
Everything for a two-storey extension in Kingston upon Thames, in one place: types, guide prices for London, the approval rules in England and how to get started.
Kingston upon Thames at a glance
- Postcode districts
- KT1
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Norbiton (0.6 miles), Hampton Wick (0.9 miles), Surbiton (1.5 miles), Teddington (1.6 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.
Around Kingston upon Thames we also work in Norbiton, Hampton Wick and Surbiton, and across the rest of Greater London. Postcode district in and near Kingston upon Thames: KT1.
Extensions available in Kingston upon Thames
Two-storey rear extensions
From £67,000 in Kingston upon Thames. Free visit to firm it up.
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Two-storey side extensions
For homes in Kingston upon Thames: typical guide from £103,500.
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Two-storey wraparound extensions
Design, approvals and build for Kingston upon Thames homes. Guide from £144,500.
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Part single, part two-storey extensions
Guide from £86,500 in Kingston upon Thames, including VAT.
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Extensions over a garage
From £38,000 in Kingston upon Thames. Free visit to firm it up.
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First-floor extensions
Design, approvals and build for Kingston upon Thames homes. Guide from £30,000.
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Two-storey extensions for semi-detached houses
From £67,000 in Kingston upon Thames. Free visit to firm it up.
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Two-storey extensions for detached houses
From £103,500 in Kingston upon Thames. Free visit to firm it up.
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Kitchen extensions with bedrooms above
Design, approvals and build for Kingston upon Thames homes. Guide from £67,000 (before kitchen units).
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Extra bedroom and en-suite extensions
Design, approvals and build for Kingston upon Thames homes. Guide from £67,000 (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 Kingston upon Thames, with a rough idea of the approval route and cost for each.
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 Kingston upon Thames
Kingston upon Thames 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 Kingston upon Thames
Do you cover Kingston upon Thames?
Yes. We cover Kingston upon Thames (KT1) and the surrounding area, including Norbiton and Hampton Wick. The first site visit is free.
What does a two-storey extension cost in Kingston upon Thames?
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 Kingston upon Thames do you cover?
Everywhere around it, including Norbiton (0.6 miles), Hampton Wick (0.9 miles) and Surbiton (1.5 miles), and the rest of Greater London.