Two-storey extensions in Eastleigh
We design, get approval for and build two-storey extensions in Eastleigh and the surrounding area. Choose the type of extension below or book a free site visit.
Eastleigh at a glance
- Postcode districts
- SO50 and SO53
- Area
- Hampshire, England
- Price region
- South East England
- Nearest towns
- Bishopstoke (0.9 miles), Fair Oak (2.3 miles), Portswood (3.2 miles), Hedge End (4.3 miles)
- Distance to Southampton
- about 4.9 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 Eastleigh (SO50 and SO53) and the places around it, including Bishopstoke (0.9 miles), Fair Oak (2.3 miles) and Portswood.
Extensions available in Eastleigh
Two-storey rear extensions
Eastleigh guide price from £61,500, Standard spec.
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Two-storey side extensions
Eastleigh guide price from £94,500, Standard spec.
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Two-storey wraparound extensions
Guide from £132,500 in Eastleigh, including VAT.
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Part single, part two-storey extensions
Eastleigh guide price from £79,000, Standard spec.
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Extensions over a garage
From £34,500 in Eastleigh. Free visit to firm it up.
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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
Guide from £61,500 in Eastleigh, including VAT.
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Two-storey extensions for detached houses
Eastleigh guide price from £94,500, Standard spec.
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Kitchen extensions with bedrooms above
Eastleigh 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 Eastleigh. Free visit to firm it up.
Learn moreWhich type suits your house?
Which type suits your house in Eastleigh 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 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 Eastleigh
Eastleigh 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 Eastleigh
Do you cover Eastleigh?
Yes. We cover Eastleigh (SO50 and SO53) and the surrounding area, including Bishopstoke and Fair Oak. The first site visit is free.
What does a two-storey extension cost in Eastleigh?
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 Eastleigh do you cover?
Everywhere around it, including Bishopstoke (0.9 miles), Fair Oak (2.3 miles) and Portswood (3.2 miles), and the rest of Hampshire.