Two-storey extensions in Brent
Everything for a two-storey extension in Brent, in one place: types, guide prices for London, the approval rules in England and how to get started.
Brent at a glance
- Postcode districts
- HA0
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Wembley (0.2 miles), Sudbury (Greater London) (0.9 miles), Harrow on the Hill (1.9 miles), Harrow (2.2 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 Brent we also work in Wembley, Sudbury (Greater London) and Harrow on the Hill, and across the rest of Greater London. Postcode district in and near Brent: HA0.
Extensions available in Brent
Two-storey rear extensions
Brent guide price from £67,000, Standard spec.
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Two-storey side extensions
Our London guide starts at £103,500 for this type.
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Two-storey wraparound extensions
From £144,500 in Brent. Free visit to firm it up.
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Part single, part two-storey extensions
For homes in Brent: typical guide from £86,500.
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Extensions over a garage
Design, approvals and build for Brent homes. Guide from £38,000.
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First-floor extensions
From £30,000 in Brent. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Guide from £67,000 in Brent, including VAT.
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Two-storey extensions for detached houses
Guide from £103,500 in Brent, including VAT.
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Kitchen extensions with bedrooms above
Guide from £67,000 (before kitchen units) in Brent, including VAT.
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Extra bedroom and en-suite extensions
Guide from £67,000 (plus en-suite) in Brent, including VAT.
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 Brent 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 Brent
Brent 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 Brent
Do you cover Brent?
Yes. We cover Brent (HA0) and the surrounding area, including Wembley and Sudbury (Greater London). The first site visit is free.
What does a two-storey extension cost in Brent?
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 Brent do you cover?
Everywhere around it, including Wembley (0.2 miles), Sudbury (Greater London) (0.9 miles) and Harrow on the Hill (1.9 miles), and the rest of Greater London.