Two-storey extensions in Havant
Homeowners in Havant can use us for the whole project or just the drawings and approvals. Start with a free visit.
Havant at a glance
- Postcode districts
- PO9
- Area
- Hampshire, England
- Price region
- South East England
- Nearest towns
- Emsworth (2.2 miles), Waterlooville (2.6 miles), Cosham (3.5 miles), South Hayling (4.8 miles)
- Distance to Southampton
- about 18.5 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 PO9 in and around Havant, along with neighbouring Emsworth, Waterlooville and Cosham.
Extensions available in Havant
Two-storey rear extensions
From £61,500 in Havant. Free visit to firm it up.
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Two-storey side extensions
Havant guide price from £94,500, Standard spec.
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Two-storey wraparound extensions
Design, approvals and build for Havant homes. Guide from £132,500.
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Part single, part two-storey extensions
For homes in Havant: typical guide from £79,000.
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Extensions over a garage
Design, approvals and build for Havant homes. Guide from £34,500.
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First-floor extensions
Havant guide price from £27,500, Standard spec.
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Two-storey extensions for semi-detached houses
Our South East England guide starts at £61,500 for this type.
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Two-storey extensions for detached houses
Havant guide price from £94,500, Standard spec.
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Kitchen extensions with bedrooms above
From £61,500 (before kitchen units) in Havant. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Guide from £61,500 (plus en-suite) in Havant, including VAT.
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Havant, with a rough idea of the approval route and cost for each.
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 Havant
Havant 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 Havant
Do you cover Havant?
Yes. We cover Havant (PO9) and the surrounding area, including Emsworth and Waterlooville. The first site visit is free.
What does a two-storey extension cost in Havant?
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 Havant do you cover?
Everywhere around it, including Emsworth (2.2 miles), Waterlooville (2.6 miles) and Cosham (3.5 miles), and the rest of Hampshire.