Two-storey extensions in Chessington
We design, get approval for and build two-storey extensions in Chessington and the surrounding area. Choose the type of extension below or book a free site visit.
Chessington at a glance
- Postcode districts
- KT9
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Hook (0.4 miles), Tolworth (1.6 miles), Surbiton (2 miles), Ewell (2.5 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 Chessington, along with neighbouring Hook, Tolworth and Surbiton.
Extensions available in Chessington
Two-storey rear extensions
For homes in Chessington: typical guide from £67,000.
Learn more
Two-storey side extensions
Chessington guide price from £103,500, Standard spec.
Learn more
Two-storey wraparound extensions
Our London guide starts at £144,500 for this type.
Learn more
Part single, part two-storey extensions
For homes in Chessington: typical guide from £86,500.
Learn more
Extensions over a garage
Chessington guide price from £38,000, Standard spec.
Learn more
First-floor extensions
From £30,000 in Chessington. Free visit to firm it up.
Learn more
Two-storey extensions for semi-detached houses
For homes in Chessington: typical guide from £67,000.
Learn more
Two-storey extensions for detached houses
Guide from £103,500 in Chessington, including VAT.
Learn more
Kitchen extensions with bedrooms above
Design, approvals and build for Chessington homes. Guide from £67,000 (before kitchen units).
Learn more
Extra bedroom and en-suite extensions
From £67,000 (plus en-suite) in Chessington. Free visit to firm it up.
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 Chessington, 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 Chessington
Chessington 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 Chessington
Do you cover Chessington?
Yes. We cover Chessington (KT9) and the surrounding area, including Hook and Tolworth. The first site visit is free.
What does a two-storey extension cost in Chessington?
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 Chessington do you cover?
Everywhere around it, including Hook (0.4 miles), Tolworth (1.6 miles) and Surbiton (2 miles), and the rest of Greater London.