Two-storey extensions in Crystal Palace
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Crystal Palace.
Crystal Palace at a glance
- Postcode districts
- SE19, SE20 and SE26
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Upper Norwood (0.7 miles), Gipsy Hill (0.8 miles), South Norwood (1.4 miles), Norbury (1.7 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 Crystal Palace we also work in Upper Norwood, Gipsy Hill and South Norwood, and across the rest of Greater London. Postcode districts in and near Crystal Palace: SE19, SE20 and SE26.
Extensions available in Crystal Palace
Two-storey rear extensions
Guide from £67,000 in Crystal Palace, including VAT.
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Two-storey side extensions
Guide from £103,500 in Crystal Palace, including VAT.
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Two-storey wraparound extensions
For homes in Crystal Palace: typical guide from £144,500.
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Part single, part two-storey extensions
Our London guide starts at £86,500 for this type.
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Extensions over a garage
Design, approvals and build for Crystal Palace homes. Guide from £38,000.
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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
Design, approvals and build for Crystal Palace homes. 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
Design, approvals and build for Crystal Palace homes. Guide from £67,000 (before kitchen units).
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Extra bedroom and en-suite extensions
Crystal Palace guide price from £67,000 (plus en-suite), Standard spec.
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 Crystal Palace 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 Crystal Palace
Crystal Palace 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 Crystal Palace
Do you cover Crystal Palace?
Yes. We cover Crystal Palace (SE19, SE20 and SE26) and the surrounding area, including Upper Norwood and Gipsy Hill. The first site visit is free.
What does a two-storey extension cost in Crystal Palace?
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 Crystal Palace do you cover?
Everywhere around it, including Upper Norwood (0.7 miles), Gipsy Hill (0.8 miles) and South Norwood (1.4 miles), and the rest of Greater London.