Two-storey extensions in Rainham
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Rainham.
Rainham at a glance
- Postcode districts
- RM13
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Elm Park (1.8 miles), Erith (2.5 miles), Belvedere (2.6 miles), Dagenham (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.
We cover Rainham (RM13) and the places around it, including Elm Park (1.8 miles), Erith (2.5 miles) and Belvedere.
Extensions available in Rainham
Two-storey rear extensions
Rainham guide price from £67,000, Standard spec.
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Two-storey side extensions
Design, approvals and build for Rainham homes. Guide from £103,500.
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Two-storey wraparound extensions
Guide from £144,500 in Rainham, including VAT.
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Part single, part two-storey extensions
Rainham guide price from £86,500, Standard spec.
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Extensions over a garage
Rainham guide price from £38,000, Standard spec.
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First-floor extensions
Design, approvals and build for Rainham homes. Guide from £30,000.
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Two-storey extensions for semi-detached houses
For homes in Rainham: typical guide from £67,000.
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Two-storey extensions for detached houses
Design, approvals and build for Rainham homes. Guide from £103,500.
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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
Guide from £67,000 (plus en-suite) in Rainham, including VAT.
Learn moreWhich type suits your house?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in Rainham we also design annexes, home offices and bedrooms over garages.
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 Rainham
Rainham 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 Rainham
Do you cover Rainham?
Yes. We cover Rainham (RM13) and the surrounding area, including Elm Park and Erith. The first site visit is free.
What does a two-storey extension cost in Rainham?
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 Rainham do you cover?
Everywhere around it, including Elm Park (1.8 miles), Erith (2.5 miles) and Belvedere (2.6 miles), and the rest of Greater London.