Two-storey extensions in Andover
Planning a bigger home in Andover? Compare extension types and guide prices below, then book a free site visit.
Andover at a glance
- Postcode districts
- RG28, SO20, SP10 and SP11
- Area
- Hampshire, England
- Price region
- South East England
- Nearest towns
- Tidworth (7.5 miles), Bulford (11.6 miles), Winchester (12.6 miles), Amesbury (12.7 miles)
- Distance to Southampton
- about 21.6 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 Andover (RG28, SO20, SP10 and SP11) and the places around it, including Tidworth (7.5 miles), Bulford (11.6 miles) and Winchester.
Extensions available in Andover
Two-storey rear extensions
For homes in Andover: typical guide from £61,500.
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Two-storey side extensions
Guide from £94,500 in Andover, including VAT.
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Two-storey wraparound extensions
Design, approvals and build for Andover homes. Guide from £132,500.
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Part single, part two-storey extensions
Our South East England guide starts at £79,000 for this type.
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Extensions over a garage
From £34,500 in Andover. Free visit to firm it up.
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First-floor extensions
From £27,500 in Andover. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Guide from £61,500 in Andover, including VAT.
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Two-storey extensions for detached houses
From £94,500 in Andover. Free visit to firm it up.
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Kitchen extensions with bedrooms above
For homes in Andover: typical guide from £61,500 (before kitchen units).
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Extra bedroom and en-suite extensions
From £61,500 (plus en-suite) in Andover. Free visit to firm it up.
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
Also available in Hampshire
- 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 Andover
Andover 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 Andover
Do you cover Andover?
Yes. We cover Andover (RG28, SO20, SP10 and SP11) and the surrounding area, including Tidworth and Bulford. The first site visit is free.
What does a two-storey extension cost in Andover?
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 Andover do you cover?
Everywhere around it, including Tidworth (7.5 miles), Bulford (11.6 miles) and Winchester (12.6 miles), and the rest of Hampshire.