Two-storey extensions in Chadwell Heath
Everything for a two-storey extension in Chadwell Heath, in one place: types, guide prices for London, the approval rules in England and how to get started.
Chadwell Heath at a glance
- Postcode districts
- RM6
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Goodmayes (1.1 miles), Becontree (1.3 miles), Dagenham (2.1 miles), Romford (2.3 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 district RM6 in and around Chadwell Heath, along with neighbouring Goodmayes, Becontree and Dagenham.
Extensions available in Chadwell Heath
Two-storey rear extensions
Design, approvals and build for Chadwell Heath homes. 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
From £144,500 in Chadwell Heath. Free visit to firm it up.
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Part single, part two-storey extensions
For homes in Chadwell Heath: typical guide from £86,500.
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Extensions over a garage
From £38,000 in Chadwell Heath. Free visit to firm it up.
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First-floor extensions
Guide from £30,000 in Chadwell Heath, including VAT.
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Two-storey extensions for semi-detached houses
For homes in Chadwell Heath: typical guide from £67,000.
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Two-storey extensions for detached houses
Chadwell Heath guide price from £103,500, Standard spec.
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Kitchen extensions with bedrooms above
For homes in Chadwell Heath: typical guide from £67,000 (before kitchen units).
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Extra bedroom and en-suite extensions
From £67,000 (plus en-suite) in Chadwell Heath. Free visit to firm it up.
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
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 Chadwell Heath
Chadwell Heath 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 Chadwell Heath
Do you cover Chadwell Heath?
Yes. We cover Chadwell Heath (RM6) and the surrounding area, including Goodmayes and Becontree. The first site visit is free.
What does a two-storey extension cost in Chadwell Heath?
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 Chadwell Heath do you cover?
Everywhere around it, including Goodmayes (1.1 miles), Becontree (1.3 miles) and Dagenham (2.1 miles), and the rest of Greater London.