Two-storey extensions in Streatham
Planning a bigger home in Streatham? Compare extension types and guide prices below, then book a free site visit.
Streatham at a glance
- Postcode districts
- SW16
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Furzedown (0.7 miles), Norbury (1.1 miles), Tooting (1.4 miles), Brixton Hill (1.6 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 SW16 in and around Streatham, along with neighbouring Furzedown, Norbury and Tooting.
Extensions available in Streatham
Two-storey rear extensions
Design, approvals and build for Streatham homes. Guide from £67,000.
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Two-storey side extensions
Design, approvals and build for Streatham homes. Guide from £103,500.
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Two-storey wraparound extensions
Guide from £144,500 in Streatham, including VAT.
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Part single, part two-storey extensions
For homes in Streatham: 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
Design, approvals and build for Streatham homes. Guide from £30,000.
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Two-storey extensions for semi-detached houses
Streatham guide price from £67,000, Standard spec.
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Two-storey extensions for detached houses
For homes in Streatham: typical guide from £103,500.
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Kitchen extensions with bedrooms above
Guide from £67,000 (before kitchen units) in Streatham, including VAT.
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Extra bedroom and en-suite extensions
For homes in Streatham: typical guide from £67,000 (plus en-suite).
Learn moreWhich type suits your house?
Which type suits your house in Streatham depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
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 Streatham
Streatham 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 Streatham
Do you cover Streatham?
Yes. We cover Streatham (SW16) and the surrounding area, including Furzedown and Norbury. The first site visit is free.
What does a two-storey extension cost in Streatham?
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 Streatham do you cover?
Everywhere around it, including Furzedown (0.7 miles), Norbury (1.1 miles) and Tooting (1.4 miles), and the rest of Greater London.