Two-storey extensions in Stanwell
Everything for a two-storey extension in Stanwell, in one place: types, guide prices for South East England, the approval rules in England and how to get started.
Stanwell at a glance
- Postcode districts
- TW19
- Area
- Surrey, England
- Price region
- South East England
- Nearest towns
- Ashford (Surrey) (1.8 miles), Staines (2 miles), Feltham (2.8 miles), Cranford (3.2 miles)
- Distance to Woking
- about 10 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 Stanwell we also work in Ashford (Surrey), Staines and Feltham, and across the rest of Surrey. Postcode district in and near Stanwell: TW19.
Extensions available in Stanwell
Two-storey rear extensions
For homes in Stanwell: typical guide from £61,500.
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Two-storey side extensions
Our South East England guide starts at £94,500 for this type.
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Two-storey wraparound extensions
Guide from £132,500 in Stanwell, including VAT.
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Part single, part two-storey extensions
Our South East England guide starts at £79,000 for this type.
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Extensions over a garage
From £34,500 in Stanwell. Free visit to firm it up.
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First-floor extensions
Our South East England guide starts at £27,500 for this type.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Stanwell homes. Guide from £61,500.
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Two-storey extensions for detached houses
Stanwell guide price from £94,500, Standard spec.
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Kitchen extensions with bedrooms above
Design, approvals and build for Stanwell homes. Guide from £61,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Our South East England guide starts at £61,500 (plus en-suite) for this type.
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Surrey, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
Also available in Surrey
- 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 Stanwell
Stanwell 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 Stanwell
Do you cover Stanwell?
Yes. We cover Stanwell (TW19) and the surrounding area, including Ashford (Surrey) and Staines. The first site visit is free.
What does a two-storey extension cost in Stanwell?
Using our South East England 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 £61,500–£83,000 including VAT. An extension over a garage is about £34,500–£50,500.
Which other places near Stanwell do you cover?
Everywhere around it, including Ashford (Surrey) (1.8 miles), Staines (2 miles) and Feltham (2.8 miles), and the rest of Surrey.