Two-storey extensions in Egham
Homeowners in Egham can use us for the whole project or just the drawings and approvals. Start with a free visit.
Egham at a glance
- Postcode districts
- GU25 and TW20
- Area
- Surrey, England
- Price region
- South East England
- Nearest towns
- Staines (2 miles), Stanwell (3.6 miles), Chertsey (3.6 miles), Ashford (Surrey) (4.1 miles)
- Distance to Woking
- about 7.8 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 Egham we also work in Staines, Stanwell and Chertsey, and across the rest of Surrey. Postcode districts in and near Egham: GU25 and TW20.
Extensions available in Egham
Two-storey rear extensions
From £61,500 in Egham. Free visit to firm it up.
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Two-storey side extensions
Egham guide price from £94,500, Standard spec.
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Two-storey wraparound extensions
Egham guide price from £132,500, Standard spec.
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Part single, part two-storey extensions
Design, approvals and build for Egham homes. Guide from £79,000.
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Extensions over a garage
From £34,500 in Egham. Free visit to firm it up.
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First-floor extensions
Design, approvals and build for Egham homes. Guide from £27,500.
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Two-storey extensions for semi-detached houses
From £61,500 in Egham. Free visit to firm it up.
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Two-storey extensions for detached houses
From £94,500 in Egham. Free visit to firm it up.
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Kitchen extensions with bedrooms above
Our South East England guide starts at £61,500 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
Design, approvals and build for Egham homes. Guide from £61,500 (plus en-suite).
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 Egham
Egham 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 Egham
Do you cover Egham?
Yes. We cover Egham (GU25 and TW20) and the surrounding area, including Staines and Stanwell. The first site visit is free.
What does a two-storey extension cost in Egham?
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 Egham do you cover?
Everywhere around it, including Staines (2 miles), Stanwell (3.6 miles) and Chertsey (3.6 miles), and the rest of Surrey.