Two-storey extensions in Gosport
Homeowners in Gosport can use us for the whole project or just the drawings and approvals. Start with a free visit.
Gosport at a glance
- Postcode districts
- PO12 and PO13
- Area
- Hampshire, England
- Price region
- South East England
- Nearest towns
- Portsmouth (1.7 miles), Southsea (1.9 miles), Fareham (4.5 miles), Cosham (4.6 miles)
- Distance to Southampton
- about 14.2 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 PO12 and PO13 in and around Gosport, along with neighbouring Portsmouth, Southsea and Fareham.
Extensions available in Gosport
Two-storey rear extensions
Gosport guide price from £61,500, Standard spec.
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Two-storey side extensions
For homes in Gosport: typical guide from £94,500.
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Two-storey wraparound extensions
Design, approvals and build for Gosport 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
Gosport guide price from £34,500, Standard spec.
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First-floor extensions
Gosport guide price from £27,500, Standard spec.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Gosport homes. Guide from £61,500.
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Two-storey extensions for detached houses
Guide from £94,500 in Gosport, including VAT.
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Kitchen extensions with bedrooms above
From £61,500 (before kitchen units) in Gosport. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Gosport guide price from £61,500 (plus en-suite), Standard spec.
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 Gosport
Gosport 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 Gosport
Do you cover Gosport?
Yes. We cover Gosport (PO12 and PO13) and the surrounding area, including Portsmouth and Southsea. The first site visit is free.
What does a two-storey extension cost in Gosport?
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 Gosport do you cover?
Everywhere around it, including Portsmouth (1.7 miles), Southsea (1.9 miles) and Fareham (4.5 miles), and the rest of Hampshire.