Two-storey extensions in Farnborough (Greater London)
Need more room in Farnborough (Greater London)? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Farnborough (Greater London) at a glance
- Postcode districts
- BR6
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Orpington (1.6 miles), Chelsfield (2.5 miles), Bickley (3.1 miles), Biggin Hill (3.5 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 Farnborough (Greater London) we also work in Orpington, Chelsfield and Bickley, and across the rest of Greater London. Postcode district in and near Farnborough (Greater London): BR6.
Extensions available in Farnborough (Greater London)
Two-storey rear extensions
For homes in Farnborough (Greater London): typical guide from £67,000.
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Two-storey side extensions
Farnborough (Greater London) guide price from £103,500, Standard spec.
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Two-storey wraparound extensions
Design, approvals and build for Farnborough (Greater London) homes. Guide from £144,500.
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Part single, part two-storey extensions
Guide from £86,500 in Farnborough (Greater London), including VAT.
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Extensions over a garage
Farnborough (Greater London) guide price from £38,000, Standard spec.
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First-floor extensions
From £30,000 in Farnborough (Greater London). Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Our London guide starts at £67,000 for this type.
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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
Our London guide starts at £67,000 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
For homes in Farnborough (Greater London): typical guide from £67,000 (plus en-suite).
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Farnborough (Greater London), with a rough idea of the approval route and cost for each.
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 Farnborough (Greater London)
Farnborough (Greater London) 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 Farnborough (Greater London)
Do you cover Farnborough (Greater London)?
Yes. We cover Farnborough (Greater London) (BR6) and the surrounding area, including Orpington and Chelsfield. The first site visit is free.
What does a two-storey extension cost in Farnborough (Greater London)?
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 Farnborough (Greater London) do you cover?
Everywhere around it, including Orpington (1.6 miles), Chelsfield (2.5 miles) and Bickley (3.1 miles), and the rest of Greater London.