Two-storey extensions in Sittingbourne
Need more room in Sittingbourne? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Sittingbourne at a glance
- Postcode districts
- ME9 and ME10
- Area
- Kent, England
- Price region
- South East England
- Nearest towns
- Faversham (7 miles), Sheerness (7 miles), Gillingham (8.6 miles), Chatham (9.2 miles)
- Distance to Maidstone
- about 10.7 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 ME9 and ME10 in and around Sittingbourne, along with neighbouring Faversham, Sheerness and Gillingham.
Extensions available in Sittingbourne
Two-storey rear extensions
Guide from £61,500 in Sittingbourne, including VAT.
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Two-storey side extensions
Guide from £94,500 in Sittingbourne, including VAT.
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Two-storey wraparound extensions
Design, approvals and build for Sittingbourne homes. Guide from £132,500.
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Part single, part two-storey extensions
Sittingbourne guide price from £79,000, Standard spec.
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Extensions over a garage
Guide from £34,500 in Sittingbourne, including VAT.
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First-floor extensions
Guide from £27,500 in Sittingbourne, including VAT.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Sittingbourne homes. Guide from £61,500.
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Two-storey extensions for detached houses
Design, approvals and build for Sittingbourne homes. Guide from £94,500.
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Kitchen extensions with bedrooms above
Design, approvals and build for Sittingbourne 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 Sittingbourne, including VAT.
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Sittingbourne, with a rough idea of the approval route and cost for each.
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 Sittingbourne
Sittingbourne 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 Sittingbourne
Do you cover Sittingbourne?
Yes. We cover Sittingbourne (ME9 and ME10) and the surrounding area, including Faversham and Sheerness. The first site visit is free.
What does a two-storey extension cost in Sittingbourne?
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 Sittingbourne do you cover?
Everywhere around it, including Faversham (7 miles), Sheerness (7 miles) and Gillingham (8.6 miles), and the rest of Kent.