Two-storey extensions in Swanscombe
Planning a bigger home in Swanscombe? Compare extension types and guide prices below, then book a free site visit.
Swanscombe at a glance
- Postcode districts
- DA9 and DA10
- Area
- Kent, England
- Price region
- South East England
- Nearest towns
- Grays (2.1 miles), Tilbury (2.3 miles), Gravesend (2.6 miles), Chafford Hundred (3 miles)
- Distance to Maidstone
- 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.
We cover Swanscombe (DA9 and DA10) and the places around it, including Grays (2.1 miles), Tilbury (2.3 miles) and Gravesend.
Extensions available in Swanscombe
Two-storey rear extensions
Our South East England guide starts at £61,500 for this type.
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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
For homes in Swanscombe: typical guide from £79,000.
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Extensions over a garage
Swanscombe guide price from £34,500, Standard spec.
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First-floor extensions
Design, approvals and build for Swanscombe homes. Guide from £27,500.
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Two-storey extensions for semi-detached houses
Swanscombe guide price from £61,500, Standard spec.
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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
Swanscombe guide price from £61,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
For homes in Swanscombe: typical guide from £61,500 (plus en-suite).
Learn moreWhich type suits your house?
Which type suits your house in Swanscombe 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 Kent
- 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 Swanscombe
Swanscombe 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 Swanscombe
Do you cover Swanscombe?
Yes. We cover Swanscombe (DA9 and DA10) and the surrounding area, including Grays and Tilbury. The first site visit is free.
What does a two-storey extension cost in Swanscombe?
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 Swanscombe do you cover?
Everywhere around it, including Grays (2.1 miles), Tilbury (2.3 miles) and Gravesend (2.6 miles), and the rest of Kent.