Two-storey extensions in Guildford
Need more room in Guildford? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Guildford at a glance
- Postcode districts
- GU1, GU2, GU3, GU4 and GU5
- Area
- Surrey, England
- Price region
- South East England
- Nearest towns
- Godalming (3.8 miles), Woking (5.8 miles), Cranleigh (7.5 miles), Aldershot (8.3 miles)
- Distance to Woking
- about 5.8 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.
We cover postcode districts GU1, GU2, GU3, GU4 and GU5 in and around Guildford, along with neighbouring Godalming, Woking and Cranleigh.
Extensions available in Guildford
Two-storey rear extensions
From £61,500 in Guildford. Free visit to firm it up.
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Two-storey side extensions
Design, approvals and build for Guildford homes. Guide from £94,500.
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Two-storey wraparound extensions
For homes in Guildford: typical guide from £132,500.
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Part single, part two-storey extensions
Guildford guide price from £79,000, Standard spec.
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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
From £27,500 in Guildford. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
From £61,500 in Guildford. Free visit to firm it up.
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Two-storey extensions for detached houses
Design, approvals and build for Guildford homes. Guide from £94,500.
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Kitchen extensions with bedrooms above
Guildford guide price from £61,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
From £61,500 (plus en-suite) in Guildford. Free visit to firm it up.
Learn moreWhich type suits your house?
Which type suits your house in Guildford 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 Guildford
Guildford 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 Guildford
Do you cover Guildford?
Yes. We cover Guildford (GU1, GU2, GU3, GU4 and GU5) and the surrounding area, including Godalming and Woking. The first site visit is free.
What does a two-storey extension cost in Guildford?
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 Guildford do you cover?
Everywhere around it, including Godalming (3.8 miles), Woking (5.8 miles) and Cranleigh (7.5 miles), and the rest of Surrey.