Two-storey extensions in Staines
Everything for a two-storey extension in Staines, in one place: types, guide prices for South East England, the approval rules in England and how to get started.
Staines at a glance
- Postcode districts
- TW18
- Area
- Surrey, England
- Price region
- South East England
- Nearest towns
- Egham (2 miles), Stanwell (2 miles), Ashford (Surrey) (2.1 miles), Chertsey (3 miles)
- Distance to Woking
- about 8.1 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.
Staines sits about 8.1 miles from Woking. Closer to home, Egham is 2.0 miles away and Stanwell 2.0 miles.
Extensions available in Staines
Two-storey rear extensions
Staines guide price from £61,500, Standard spec.
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Two-storey side extensions
For homes in Staines: typical guide from £94,500.
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Two-storey wraparound extensions
For homes in Staines: typical guide from £132,500.
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Part single, part two-storey extensions
From £79,000 in Staines. Free visit to firm it up.
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Extensions over a garage
Our South East England guide starts at £34,500 for this type.
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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
From £61,500 in Staines. Free visit to firm it up.
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Two-storey extensions for detached houses
For homes in Staines: typical guide from £94,500.
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Kitchen extensions with bedrooms above
Guide from £61,500 (before kitchen units) in Staines, including VAT.
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Extra bedroom and en-suite extensions
From £61,500 (plus en-suite) in Staines. Free visit to firm it up.
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Staines, with a rough idea of the approval route and cost for each.
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 Staines
Staines 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 Staines
Do you cover Staines?
Yes. We cover Staines (TW18) and the surrounding area, including Egham and Stanwell. The first site visit is free.
What does a two-storey extension cost in Staines?
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 Staines do you cover?
Everywhere around it, including Egham (2 miles), Stanwell (2 miles) and Ashford (Surrey) (2.1 miles), and the rest of Surrey.