Two-storey extensions in Lymington
Everything for a two-storey extension in Lymington, in one place: types, guide prices for South East England, the approval rules in England and how to get started.
Lymington at a glance
- Postcode districts
- SO41 and SO42
- Area
- Hampshire, England
- Price region
- South East England
- Nearest towns
- New Milton (5.6 miles), Hythe (Hampshire) (9.2 miles), Christchurch (10.7 miles), Totton (11.2 miles)
- Distance to Southampton
- about 11.6 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 postcode districts SO41 and SO42 in and around Lymington, along with neighbouring New Milton, Hythe (Hampshire) and Christchurch.
Extensions available in Lymington
Two-storey rear extensions
From £61,500 in Lymington. Free visit to firm it up.
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Two-storey side extensions
For homes in Lymington: typical guide from £94,500.
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Two-storey wraparound extensions
Lymington guide price from £132,500, Standard spec.
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Part single, part two-storey extensions
Lymington guide price from £79,000, Standard spec.
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Extensions over a garage
For homes in Lymington: typical guide from £34,500.
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First-floor extensions
Guide from £27,500 in Lymington, including VAT.
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Two-storey extensions for semi-detached houses
Guide from £61,500 in Lymington, including VAT.
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Two-storey extensions for detached houses
Our South East England guide starts at £94,500 for this type.
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Kitchen extensions with bedrooms above
Design, approvals and build for Lymington homes. Guide from £61,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Guide from £61,500 (plus en-suite) in Lymington, 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 Lymington 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 Lymington
Lymington 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 Lymington
Do you cover Lymington?
Yes. We cover Lymington (SO41 and SO42) and the surrounding area, including New Milton and Hythe (Hampshire). The first site visit is free.
What does a two-storey extension cost in Lymington?
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 Lymington do you cover?
Everywhere around it, including New Milton (5.6 miles), Hythe (Hampshire) (9.2 miles) and Christchurch (10.7 miles), and the rest of Hampshire.