Two-storey extensions in West Drayton
Everything for a two-storey extension in West Drayton, in one place: types, guide prices for London, the approval rules in England and how to get started.
West Drayton at a glance
- Postcode districts
- UB7
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Hayes (2.2 miles), Hillingdon (2.3 miles), Cranford (2.8 miles), Stanwell (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 UB7 in and around West Drayton, along with neighbouring Hayes, Hillingdon and Cranford.
Extensions available in West Drayton
Two-storey rear extensions
Our London guide starts at £67,000 for this type.
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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
For homes in West Drayton: typical guide from £144,500.
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Part single, part two-storey extensions
Design, approvals and build for West Drayton homes. 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
For homes in West Drayton: typical guide from £30,000.
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Two-storey extensions for semi-detached houses
Design, approvals and build for West Drayton homes. Guide from £67,000.
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Two-storey extensions for detached houses
From £103,500 in West Drayton. Free visit to firm it up.
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Kitchen extensions with bedrooms above
From £67,000 (before kitchen units) in West Drayton. Free visit to firm it up.
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Extra bedroom and en-suite extensions
West Drayton guide price from £67,000 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
Which type suits your house in West Drayton 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 West Drayton
West Drayton 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 West Drayton
Do you cover West Drayton?
Yes. We cover West Drayton (UB7) and the surrounding area, including Hayes and Hillingdon. The first site visit is free.
What does a two-storey extension cost in West Drayton?
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 West Drayton do you cover?
Everywhere around it, including Hayes (2.2 miles), Hillingdon (2.3 miles) and Cranford (2.8 miles), and the rest of Greater London.