Two-storey extensions in Uxbridge
Need more room in Uxbridge? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Uxbridge at a glance
- Postcode districts
- UB8
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Hillingdon (1.7 miles), Ickenham (2 miles), Ruislip (3 miles), South Ruislip (3.2 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.
We cover postcode district UB8 in and around Uxbridge, along with neighbouring Hillingdon, Ickenham and Ruislip.
Extensions available in Uxbridge
Two-storey rear extensions
For homes in Uxbridge: typical guide from £67,000.
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Two-storey side extensions
Design, approvals and build for Uxbridge homes. Guide from £103,500.
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Two-storey wraparound extensions
For homes in Uxbridge: typical guide from £144,500.
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Part single, part two-storey extensions
Design, approvals and build for Uxbridge homes. Guide from £86,500.
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Extensions over a garage
Uxbridge guide price from £38,000, Standard spec.
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First-floor extensions
For homes in Uxbridge: typical guide from £30,000.
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Two-storey extensions for semi-detached houses
For homes in Uxbridge: typical guide from £67,000.
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Two-storey extensions for detached houses
Uxbridge guide price from £103,500, Standard spec.
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Kitchen extensions with bedrooms above
From £67,000 (before kitchen units) in Uxbridge. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Our London guide starts at £67,000 (plus en-suite) for this type.
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 Uxbridge 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 Uxbridge
Uxbridge 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 Uxbridge
Do you cover Uxbridge?
Yes. We cover Uxbridge (UB8) and the surrounding area, including Hillingdon and Ickenham. The first site visit is free.
What does a two-storey extension cost in Uxbridge?
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 Uxbridge do you cover?
Everywhere around it, including Hillingdon (1.7 miles), Ickenham (2 miles) and Ruislip (3 miles), and the rest of Greater London.