Two-storey extensions in Belvedere
Need more room in Belvedere? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Belvedere at a glance
- Postcode districts
- DA17 and DA18
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Erith (1.1 miles), Thamesmead (1.6 miles), Abbey Wood (1.9 miles), Rainham (2.6 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.
Around Belvedere we also work in Erith, Thamesmead and Abbey Wood, and across the rest of Greater London. Postcode districts in and near Belvedere: DA17 and DA18.
Extensions available in Belvedere
Two-storey rear extensions
For homes in Belvedere: typical guide from £67,000.
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Two-storey side extensions
Belvedere guide price from £103,500, Standard spec.
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Two-storey wraparound extensions
Belvedere guide price from £144,500, Standard spec.
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Part single, part two-storey extensions
For homes in Belvedere: typical guide from £86,500.
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Extensions over a garage
For homes in Belvedere: typical guide from £38,000.
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First-floor extensions
For homes in Belvedere: typical guide from £30,000.
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Two-storey extensions for semi-detached houses
Belvedere guide price from £67,000, Standard spec.
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Two-storey extensions for detached houses
Our London guide starts at £103,500 for this type.
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Kitchen extensions with bedrooms above
For homes in Belvedere: typical guide from £67,000 (before kitchen units).
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Extra bedroom and en-suite extensions
Design, approvals and build for Belvedere homes. Guide from £67,000 (plus en-suite).
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Greater London, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
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 Belvedere
Belvedere 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 Belvedere
Do you cover Belvedere?
Yes. We cover Belvedere (DA17 and DA18) and the surrounding area, including Erith and Thamesmead. The first site visit is free.
What does a two-storey extension cost in Belvedere?
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 Belvedere do you cover?
Everywhere around it, including Erith (1.1 miles), Thamesmead (1.6 miles) and Abbey Wood (1.9 miles), and the rest of Greater London.