Two-storey extensions in Becontree
Homeowners in Becontree can use us for the whole project or just the drawings and approvals. Start with a free visit.
Becontree at a glance
- Postcode districts
- RM8 and RM9
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Goodmayes (1 mile), Chadwell Heath (1.3 miles), Dagenham (1.6 miles), Barking (2.4 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 Becontree (RM8 and RM9) and the places around it, including Goodmayes (1.0 miles), Chadwell Heath (1.3 miles) and Dagenham.
Extensions available in Becontree
Two-storey rear extensions
For homes in Becontree: typical guide from £67,000.
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Two-storey side extensions
Our London guide starts at £103,500 for this type.
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Two-storey wraparound extensions
Design, approvals and build for Becontree homes. Guide from £144,500.
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Part single, part two-storey extensions
From £86,500 in Becontree. Free visit to firm it up.
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Extensions over a garage
For homes in Becontree: typical guide from £38,000.
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First-floor extensions
Design, approvals and build for Becontree homes. Guide from £30,000.
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Two-storey extensions for semi-detached houses
Becontree guide price from £67,000, Standard spec.
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Two-storey extensions for detached houses
From £103,500 in Becontree. Free visit to firm it up.
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Kitchen extensions with bedrooms above
Guide from £67,000 (before kitchen units) in Becontree, including VAT.
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Extra bedroom and en-suite extensions
Design, approvals and build for Becontree 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 Becontree
Becontree 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 Becontree
Do you cover Becontree?
Yes. We cover Becontree (RM8 and RM9) and the surrounding area, including Goodmayes and Chadwell Heath. The first site visit is free.
What does a two-storey extension cost in Becontree?
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 Becontree do you cover?
Everywhere around it, including Goodmayes (1 mile), Chadwell Heath (1.3 miles) and Dagenham (1.6 miles), and the rest of Greater London.