Two-storey extensions in Bexley
Planning a bigger home in Bexley? Compare extension types and guide prices below, then book a free site visit.
Bexley at a glance
- Postcode districts
- DA5, DA6 and DA7
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Sidcup (2.2 miles), Welling (2.3 miles), Dartford (2.8 miles), Erith (3.1 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 Bexley (DA5, DA6 and DA7) and the places around it, including Sidcup (2.2 miles), Welling (2.3 miles) and Dartford.
Extensions available in Bexley
Two-storey rear extensions
From £67,000 in Bexley. Free visit to firm it up.
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Two-storey side extensions
Design, approvals and build for Bexley homes. Guide from £103,500.
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Two-storey wraparound extensions
Design, approvals and build for Bexley homes. Guide from £144,500.
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Part single, part two-storey extensions
Bexley guide price from £86,500, Standard spec.
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Extensions over a garage
Design, approvals and build for Bexley homes. Guide from £38,000.
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First-floor extensions
Design, approvals and build for Bexley homes. Guide from £30,000.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Bexley homes. Guide from £67,000.
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Two-storey extensions for detached houses
Bexley guide price from £103,500, Standard spec.
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Kitchen extensions with bedrooms above
Our London guide starts at £67,000 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
From £67,000 (plus en-suite) in Bexley. Free visit to firm it up.
Learn moreWhich type suits your house?
Which type suits your house in Bexley 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 Greater London
- 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 Bexley
Bexley 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 Bexley
Do you cover Bexley?
Yes. We cover Bexley (DA5, DA6 and DA7) and the surrounding area, including Sidcup and Welling. The first site visit is free.
What does a two-storey extension cost in Bexley?
Using our London 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 £67,000–£90,500 including VAT. An extension over a garage is about £38,000–£55,000.
Which other places near Bexley do you cover?
Everywhere around it, including Sidcup (2.2 miles), Welling (2.3 miles) and Dartford (2.8 miles), and the rest of Greater London.