Two-storey extensions in Purley
Need more room in Purley? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Purley at a glance
- Postcode districts
- CR8
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Kenley (0.9 miles), Sanderstead (1.5 miles), Coulsdon (1.7 miles), South Croydon (1.9 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.
Around Purley we also work in Kenley, Sanderstead and Coulsdon, and across the rest of Greater London. Postcode district in and near Purley: CR8.
Extensions available in Purley
Two-storey rear extensions
Our London guide starts at £67,000 for this type.
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Two-storey side extensions
Purley guide price from £103,500, Standard spec.
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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
For homes in Purley: 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
Our London guide starts at £30,000 for this type.
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Two-storey extensions for semi-detached houses
For homes in Purley: typical guide from £67,000.
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Two-storey extensions for detached houses
Guide from £103,500 in Purley, including VAT.
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Kitchen extensions with bedrooms above
Guide from £67,000 (before kitchen units) in Purley, including VAT.
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Extra bedroom and en-suite extensions
For homes in Purley: typical guide from £67,000 (plus en-suite).
Learn moreWhich type suits your house?
The boundaries usually decide it. Two-storey work close to a neighbour needs careful design for light and privacy, so at the visit in Purley we measure distances to every boundary before suggesting a type.
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 Purley
Purley 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 Purley
Do you cover Purley?
Yes. We cover Purley (CR8) and the surrounding area, including Kenley and Sanderstead. The first site visit is free.
What does a two-storey extension cost in Purley?
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 Purley do you cover?
Everywhere around it, including Kenley (0.9 miles), Sanderstead (1.5 miles) and Coulsdon (1.7 miles), and the rest of Greater London.