Two-storey extensions in Richmond
Everything for a two-storey extension in Richmond, in one place: types, guide prices for London, the approval rules in England and how to get started.
Richmond at a glance
- Postcode districts
- TW1, TW9 and TW10
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Kew (1.6 miles), East Sheen (1.6 miles), Brentford (1.7 miles), Mortlake (1.8 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.
Around Richmond we also work in Kew, East Sheen and Brentford, and across the rest of Greater London. Postcode districts in and near Richmond: TW1, TW9 and TW10.
Extensions available in Richmond
Two-storey rear extensions
For homes in Richmond: typical guide from £67,000.
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Two-storey side extensions
Design, approvals and build for Richmond homes. Guide from £103,500.
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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
Richmond guide price from £86,500, Standard spec.
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Extensions over a garage
Our London guide starts at £38,000 for this type.
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First-floor extensions
Our London guide starts at £30,000 for this type.
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Two-storey extensions for semi-detached houses
From £67,000 in Richmond. Free visit to firm it up.
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Two-storey extensions for detached houses
Design, approvals and build for Richmond homes. Guide from £103,500.
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Kitchen extensions with bedrooms above
For homes in Richmond: typical guide from £67,000 (before kitchen units).
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Extra bedroom and en-suite extensions
Our London guide starts at £67,000 (plus en-suite) for this type.
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 Richmond, 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 Richmond
Richmond 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 Richmond
Do you cover Richmond?
Yes. We cover Richmond (TW1, TW9 and TW10) and the surrounding area, including Kew and East Sheen. The first site visit is free.
What does a two-storey extension cost in Richmond?
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 Richmond do you cover?
Everywhere around it, including Kew (1.6 miles), East Sheen (1.6 miles) and Brentford (1.7 miles), and the rest of Greater London.