Two-storey extensions in Westergate
Homeowners in Westergate can use us for the whole project or just the drawings and approvals. Start with a free visit.
Westergate at a glance
- Postcode districts
- PO22
- Area
- West Sussex, England
- Price region
- South East England
- Nearest towns
- Barnham (1.6 miles), Bognor Regis (4 miles), Chichester (4.8 miles), Littlehampton (6 miles)
- Distance to Crawley
- about 28.4 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 Westergate (PO22) and the places around it, including Barnham (1.6 miles), Bognor Regis (4.0 miles) and Chichester.
Extensions available in Westergate
Two-storey rear extensions
Design, approvals and build for Westergate homes. Guide from £61,500.
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Two-storey side extensions
From £94,500 in Westergate. Free visit to firm it up.
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Two-storey wraparound extensions
For homes in Westergate: typical guide from £132,500.
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Part single, part two-storey extensions
Guide from £79,000 in Westergate, including VAT.
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Extensions over a garage
Westergate guide price from £34,500, Standard spec.
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First-floor extensions
Guide from £27,500 in Westergate, including VAT.
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Two-storey extensions for semi-detached houses
For homes in Westergate: typical guide from £61,500.
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Two-storey extensions for detached houses
For homes in Westergate: typical guide from £94,500.
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Kitchen extensions with bedrooms above
Guide from £61,500 (before kitchen units) in Westergate, including VAT.
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Extra bedroom and en-suite extensions
Design, approvals and build for Westergate homes. Guide from £61,500 (plus en-suite).
Learn moreWhich type suits your house?
The boundaries usually decide it. Two-storey work close to a neighbour needs careful design for light and privacy, so at the visit in Westergate we measure distances to every boundary before suggesting a type.
Also available in West Sussex
- 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 Westergate
Westergate 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 Westergate
Do you cover Westergate?
Yes. We cover Westergate (PO22) and the surrounding area, including Barnham and Bognor Regis. The first site visit is free.
What does a two-storey extension cost in Westergate?
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 Westergate do you cover?
Everywhere around it, including Barnham (1.6 miles), Bognor Regis (4 miles) and Chichester (4.8 miles), and the rest of West Sussex.