Two-storey extensions in West Molesey
Need more room in West Molesey? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
West Molesey at a glance
- Postcode districts
- KT8
- Area
- Surrey, England
- Price region
- South East England
- Nearest towns
- Hampton (1.1 miles), East Molesey (1.3 miles), Sunbury-on-Thames (1.7 miles), Walton-on-Thames (1.7 miles)
- Distance to Woking
- about 9.5 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 KT8 in and around West Molesey, along with neighbouring Hampton, East Molesey and Sunbury-on-Thames.
Extensions available in West Molesey

Two-storey rear extensions
From £61,500 in West Molesey. Free visit to firm it up.
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Two-storey side extensions
Design, approvals and build for West Molesey homes. Guide from £94,500.
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Two-storey wraparound extensions
From £132,500 in West Molesey. Free visit to firm it up.
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Part single, part two-storey extensions
For homes in West Molesey: typical guide from £79,000.
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Extensions over a garage
West Molesey guide price from £34,500, Standard spec.
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First-floor extensions
Design, approvals and build for West Molesey homes. Guide from £27,500.
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Two-storey extensions for semi-detached houses
Design, approvals and build for West Molesey homes. Guide from £61,500.
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Two-storey extensions for detached houses
From £94,500 in West Molesey. Free visit to firm it up.
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Kitchen extensions with bedrooms above
From £61,500 (before kitchen units) in West Molesey. Free visit to firm it up.
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Extra bedroom and en-suite extensions
For homes in West Molesey: typical guide from £61,500 (plus en-suite).
Learn moreWhich type suits your house?
Which type suits your house in West Molesey 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 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 West Molesey
West Molesey 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 Molesey
Do you cover West Molesey?
Yes. We cover West Molesey (KT8) and the surrounding area, including Hampton and East Molesey. The first site visit is free.
What does a two-storey extension cost in West Molesey?
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 West Molesey do you cover?
Everywhere around it, including Hampton (1.1 miles), East Molesey (1.3 miles) and Sunbury-on-Thames (1.7 miles), and the rest of Surrey.