Two-storey extensions in Farnham
Need more room in Farnham? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Farnham at a glance
- Postcode districts
- GU9 and GU10
- Area
- Surrey, England
- Price region
- South East England
- Nearest towns
- Hale (Surrey) (1.2 miles), Aldershot (2.8 miles), Fleet (5 miles), Farnborough (Hampshire) (5.8 miles)
- Distance to Woking
- about 12.7 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 districts GU9 and GU10 in and around Farnham, along with neighbouring Hale (Surrey), Aldershot and Fleet.
Extensions available in Farnham
Two-storey rear extensions
Our South East England guide starts at £61,500 for this type.
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Two-storey side extensions
Design, approvals and build for Farnham homes. Guide from £94,500.
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Two-storey wraparound extensions
Guide from £132,500 in Farnham, including VAT.
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Part single, part two-storey extensions
Guide from £79,000 in Farnham, including VAT.
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Extensions over a garage
Design, approvals and build for Farnham homes. Guide from £34,500.
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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
For homes in Farnham: typical guide from £61,500.
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Two-storey extensions for detached houses
For homes in Farnham: typical guide from £94,500.
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Kitchen extensions with bedrooms above
Design, approvals and build for Farnham homes. Guide from £61,500 (before kitchen units).
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Extra bedroom and en-suite extensions
For homes in Farnham: typical guide from £61,500 (plus en-suite).
Learn moreWhich type suits your house?
The boundaries usually decide it. Two-storey work close to a neighbour needs careful design for light and privacy, so at the visit in Farnham we measure distances to every boundary before suggesting a type.
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 Farnham
Farnham 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 Farnham
Do you cover Farnham?
Yes. We cover Farnham (GU9 and GU10) and the surrounding area, including Hale (Surrey) and Aldershot. The first site visit is free.
What does a two-storey extension cost in Farnham?
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 Farnham do you cover?
Everywhere around it, including Hale (Surrey) (1.2 miles), Aldershot (2.8 miles) and Fleet (5 miles), and the rest of Surrey.