Two-storey extensions in Sanderstead
Everything for a two-storey extension in Sanderstead, in one place: types, guide prices for London, the approval rules in England and how to get started.
Sanderstead at a glance
- Postcode districts
- CR2
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Kenley (1.2 miles), Purley (1.5 miles), South Croydon (1.9 miles), Coulsdon (2.9 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 Sanderstead (CR2) and the places around it, including Kenley (1.2 miles), Purley (1.5 miles) and South Croydon.
Extensions available in Sanderstead
Two-storey rear extensions
Design, approvals and build for Sanderstead homes. Guide from £67,000.
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Two-storey side extensions
Design, approvals and build for Sanderstead homes. Guide from £103,500.
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Two-storey wraparound extensions
Guide from £144,500 in Sanderstead, including VAT.
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Part single, part two-storey extensions
For homes in Sanderstead: typical guide from £86,500.
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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
For homes in Sanderstead: typical guide from £30,000.
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Two-storey extensions for semi-detached houses
For homes in Sanderstead: typical guide from £67,000.
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Two-storey extensions for detached houses
Our London guide starts at £103,500 for this type.
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Kitchen extensions with bedrooms above
Guide from £67,000 (before kitchen units) in Sanderstead, including VAT.
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Extra bedroom and en-suite extensions
For homes in Sanderstead: typical 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 Sanderstead, 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 Sanderstead
Sanderstead 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 Sanderstead
Do you cover Sanderstead?
Yes. We cover Sanderstead (CR2) and the surrounding area, including Kenley and Purley. The first site visit is free.
What does a two-storey extension cost in Sanderstead?
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 Sanderstead do you cover?
Everywhere around it, including Kenley (1.2 miles), Purley (1.5 miles) and South Croydon (1.9 miles), and the rest of Greater London.