Two-storey extensions in Cranford
Need more room in Cranford? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Cranford at a glance
- Postcode districts
- TW6
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Heston (1.7 miles), Feltham (2.1 miles), Hounslow (2.3 miles), Osterley (2.6 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 Cranford we also work in Heston, Feltham and Hounslow, and across the rest of Greater London. Postcode district in and near Cranford: TW6.
Extensions available in Cranford

Two-storey rear extensions
From £67,000 in Cranford. Free visit to firm it up.
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Two-storey side extensions
For homes in Cranford: typical guide from £103,500.
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Two-storey wraparound extensions
Cranford guide price from £144,500, Standard spec.
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Part single, part two-storey extensions
For homes in Cranford: typical guide from £86,500.
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Extensions over a garage
Guide from £38,000 in Cranford, including VAT.
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First-floor extensions
Guide from £30,000 in Cranford, including VAT.
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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
Guide from £67,000 (plus en-suite) in Cranford, including VAT.
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Greater London, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
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 Cranford
Cranford 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 Cranford
Do you cover Cranford?
Yes. We cover Cranford (TW6) and the surrounding area, including Heston and Feltham. The first site visit is free.
What does a two-storey extension cost in Cranford?
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 Cranford do you cover?
Everywhere around it, including Heston (1.7 miles), Feltham (2.1 miles) and Hounslow (2.3 miles), and the rest of Greater London.