Two-storey extensions in Furzedown
We design, get approval for and build two-storey extensions in Furzedown and the surrounding area. Choose the type of extension below or book a free site visit.
Furzedown at a glance
- Postcode districts
- SW17
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Streatham (0.7 miles), Tooting (0.7 miles), Norbury (1.4 miles), Balham (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.
We cover postcode district SW17 in and around Furzedown, along with neighbouring Streatham, Tooting and Norbury.
Extensions available in Furzedown
Two-storey rear extensions
Our London guide starts at £67,000 for this type.
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Two-storey side extensions
Guide from £103,500 in Furzedown, including VAT.
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Two-storey wraparound extensions
Design, approvals and build for Furzedown homes. Guide from £144,500.
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Part single, part two-storey extensions
Guide from £86,500 in Furzedown, including VAT.
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Extensions over a garage
For homes in Furzedown: typical 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
From £67,000 in Furzedown. Free visit to firm it up.
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Two-storey extensions for detached houses
Furzedown guide price from £103,500, Standard spec.
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Kitchen extensions with bedrooms above
Design, approvals and build for Furzedown homes. Guide from £67,000 (before kitchen units).
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Extra bedroom and en-suite extensions
Design, approvals and build for Furzedown homes. Guide from £67,000 (plus en-suite).
Learn moreWhich type suits your house?
Which type suits your house in Furzedown 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 Furzedown
Furzedown 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 Furzedown
Do you cover Furzedown?
Yes. We cover Furzedown (SW17) and the surrounding area, including Streatham and Tooting. The first site visit is free.
What does a two-storey extension cost in Furzedown?
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 Furzedown do you cover?
Everywhere around it, including Streatham (0.7 miles), Tooting (0.7 miles) and Norbury (1.4 miles), and the rest of Greater London.