Two-storey extensions in New Milton
Everything for a two-storey extension in New Milton, in one place: types, guide prices for South East England, the approval rules in England and how to get started.
New Milton at a glance
- Postcode districts
- BH25
- Area
- Hampshire, England
- Price region
- South East England
- Nearest towns
- Christchurch (5.2 miles), Lymington (5.6 miles), Ringwood (8.2 miles), Bournemouth (9.7 miles)
- Distance to Southampton
- about 15.3 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.
New Milton sits about 15.3 miles from Southampton. Closer to home, Christchurch is 5.2 miles away and Lymington 5.6 miles.
Extensions available in New Milton
Two-storey rear extensions
From £61,500 in New Milton. Free visit to firm it up.
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Two-storey side extensions
Our South East England guide starts at £94,500 for this type.
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Two-storey wraparound extensions
Our South East England guide starts at £132,500 for this type.
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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
New Milton guide price from £34,500, Standard spec.
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First-floor extensions
Guide from £27,500 in New Milton, including VAT.
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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
Guide from £94,500 in New Milton, including VAT.
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Kitchen extensions with bedrooms above
From £61,500 (before kitchen units) in New Milton. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Guide from £61,500 (plus en-suite) in New Milton, including VAT.
Learn moreWhich type suits your house?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in New Milton we also design annexes, home offices and bedrooms over garages.
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 New Milton
New Milton 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 New Milton
Do you cover New Milton?
Yes. We cover New Milton (BH25) and the surrounding area, including Christchurch and Lymington. The first site visit is free.
What does a two-storey extension cost in New Milton?
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 New Milton do you cover?
Everywhere around it, including Christchurch (5.2 miles), Lymington (5.6 miles) and Ringwood (8.2 miles), and the rest of Hampshire.