Two-storey extensions in Dover
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Dover.
Dover at a glance
- Postcode districts
- CT15, CT16 and CT17
- Area
- Kent, England
- Price region
- South East England
- Nearest towns
- Folkestone (7 miles), Deal (7.8 miles), Hythe (Kent) (10.6 miles), Canterbury (14.6 miles)
- Distance to Maidstone
- about 35.8 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.
Dover sits about 35.8 miles from Maidstone. Closer to home, Folkestone is 7.0 miles away and Deal 7.8 miles.
Extensions available in Dover
Two-storey rear extensions
Our South East England guide starts at £61,500 for this type.
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Two-storey side extensions
For homes in Dover: typical guide from £94,500.
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Two-storey wraparound extensions
Dover guide price from £132,500, Standard spec.
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Part single, part two-storey extensions
Dover guide price from £79,000, Standard spec.
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Extensions over a garage
For homes in Dover: typical guide from £34,500.
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First-floor extensions
From £27,500 in Dover. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Dover guide price from £61,500, Standard spec.
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Two-storey extensions for detached houses
Design, approvals and build for Dover homes. Guide from £94,500.
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Kitchen extensions with bedrooms above
For homes in Dover: typical guide from £61,500 (before kitchen units).
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Extra bedroom and en-suite extensions
From £61,500 (plus en-suite) in Dover. Free visit to firm it up.
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 Dover, 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 Dover
Dover 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 Dover
Do you cover Dover?
Yes. We cover Dover (CT15, CT16 and CT17) and the surrounding area, including Folkestone and Deal. The first site visit is free.
What does a two-storey extension cost in Dover?
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 Dover do you cover?
Everywhere around it, including Folkestone (7 miles), Deal (7.8 miles) and Hythe (Kent) (10.6 miles), and the rest of Kent.