Two-storey extensions in Croydon
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Croydon.
Croydon at a glance
- Postcode districts
- CR0 and CR9
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Thornton Heath (1.1 miles), South Croydon (1.5 miles), South Norwood (1.6 miles), Shirley (Greater London) (2.2 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.
We cover postcode districts CR0 and CR9 in and around Croydon, along with neighbouring Thornton Heath, South Croydon and South Norwood.
Extensions available in Croydon
Two-storey rear extensions
For homes in Croydon: typical guide from £67,000.
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Two-storey side extensions
Guide from £103,500 in Croydon, including VAT.
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Two-storey wraparound extensions
Croydon guide price from £144,500, Standard spec.
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Part single, part two-storey extensions
Design, approvals and build for Croydon homes. 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
Design, approvals and build for Croydon homes. Guide from £30,000.
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Two-storey extensions for semi-detached houses
Guide from £67,000 in Croydon, including VAT.
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Two-storey extensions for detached houses
For homes in Croydon: typical guide from £103,500.
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Kitchen extensions with bedrooms above
Guide from £67,000 (before kitchen units) in Croydon, including VAT.
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Extra bedroom and en-suite extensions
For homes in Croydon: typical guide from £67,000 (plus en-suite).
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
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 Croydon
Croydon 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 Croydon
Do you cover Croydon?
Yes. We cover Croydon (CR0 and CR9) and the surrounding area, including Thornton Heath and South Croydon. The first site visit is free.
What does a two-storey extension cost in Croydon?
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 Croydon do you cover?
Everywhere around it, including Thornton Heath (1.1 miles), South Croydon (1.5 miles) and South Norwood (1.6 miles), and the rest of Greater London.