Two-storey extensions in Ashtead
We design, get approval for and build two-storey extensions in Ashtead and the surrounding area. Choose the type of extension below or book a free site visit.
Ashtead at a glance
- Postcode districts
- KT21
- Area
- Surrey, England
- Price region
- South East England
- Nearest towns
- Leatherhead (1.7 miles), Epsom (2 miles), Ewell (3.6 miles), Chessington (3.7 miles)
- Distance to Woking
- about 11.2 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.
Ashtead sits about 11.2 miles from Woking. Closer to home, Leatherhead is 1.7 miles away and Epsom 2.0 miles.
Extensions available in Ashtead
Two-storey rear extensions
Design, approvals and build for Ashtead homes. Guide from £61,500.
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Two-storey side extensions
For homes in Ashtead: typical guide from £94,500.
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Two-storey wraparound extensions
Ashtead guide price from £132,500, Standard spec.
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Part single, part two-storey extensions
Ashtead guide price from £79,000, Standard spec.
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Extensions over a garage
Design, approvals and build for Ashtead homes. Guide from £34,500.
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First-floor extensions
Ashtead guide price from £27,500, Standard spec.
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Two-storey extensions for semi-detached houses
Our South East England guide starts at £61,500 for this type.
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Two-storey extensions for detached houses
For homes in Ashtead: typical guide from £94,500.
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Kitchen extensions with bedrooms above
Design, approvals and build for Ashtead homes. Guide from £61,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Guide from £61,500 (plus en-suite) in Ashtead, including VAT.
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 Ashtead, with a rough idea of the approval route and cost for each.
Also available in Surrey
- 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 Ashtead
Ashtead 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 Ashtead
Do you cover Ashtead?
Yes. We cover Ashtead (KT21) and the surrounding area, including Leatherhead and Epsom. The first site visit is free.
What does a two-storey extension cost in Ashtead?
Using our South East 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 £61,500–£83,000 including VAT. An extension over a garage is about £34,500–£50,500.
Which other places near Ashtead do you cover?
Everywhere around it, including Leatherhead (1.7 miles), Epsom (2 miles) and Ewell (3.6 miles), and the rest of Surrey.