Two-storey extensions in Lewisham
Need more room in Lewisham? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Lewisham at a glance
- Postcode districts
- SE6
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Catford (0 miles), Ladywell (0.6 miles), Crofton Park (0.7 miles), Forest Hill (0.9 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 postcode district SE6 in and around Lewisham, along with neighbouring Catford, Ladywell and Crofton Park.
Extensions available in Lewisham
Two-storey rear extensions
For homes in Lewisham: typical guide from £67,000.
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Two-storey side extensions
For homes in Lewisham: typical guide from £103,500.
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Two-storey wraparound extensions
Guide from £144,500 in Lewisham, including VAT.
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Part single, part two-storey extensions
Design, approvals and build for Lewisham homes. Guide from £86,500.
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Extensions over a garage
Design, approvals and build for Lewisham homes. Guide from £38,000.
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First-floor extensions
Lewisham guide price from £30,000, Standard spec.
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Two-storey extensions for semi-detached houses
Guide from £67,000 in Lewisham, including VAT.
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Two-storey extensions for detached houses
Lewisham guide price from £103,500, Standard spec.
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Kitchen extensions with bedrooms above
For homes in Lewisham: typical guide from £67,000 (before kitchen units).
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Extra bedroom and en-suite extensions
Lewisham guide price from £67,000 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in Lewisham we also design annexes, home offices and bedrooms over garages.
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 Lewisham
Lewisham 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 Lewisham
Do you cover Lewisham?
Yes. We cover Lewisham (SE6) and the surrounding area, including Catford and Ladywell. The first site visit is free.
What does a two-storey extension cost in Lewisham?
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 Lewisham do you cover?
Everywhere around it, including Catford (0 miles), Ladywell (0.6 miles) and Crofton Park (0.7 miles), and the rest of Greater London.