Two-storey extensions in Elm Park
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Elm Park.
Elm Park at a glance
- Postcode districts
- RM12
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Dagenham (1.3 miles), Hornchurch (1.3 miles), Rainham (1.8 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 Elm Park (RM12) and the places around it, including Dagenham (1.3 miles), Hornchurch (1.3 miles) and Rainham.
Extensions available in Elm Park
Two-storey rear extensions
Our London guide starts at £67,000 for this type.
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Two-storey side extensions
Guide from £103,500 in Elm Park, including VAT.
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Two-storey wraparound extensions
Design, approvals and build for Elm Park homes. Guide from £144,500.
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Part single, part two-storey extensions
For homes in Elm Park: typical guide from £86,500.
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Extensions over a garage
Elm Park guide price from £38,000, Standard spec.
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First-floor extensions
Design, approvals and build for Elm Park homes. Guide from £30,000.
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Two-storey extensions for semi-detached houses
Elm Park 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
Design, approvals and build for Elm Park homes. Guide from £67,000 (before kitchen units).
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Extra bedroom and en-suite extensions
Guide from £67,000 (plus en-suite) in Elm Park, including VAT.
Learn moreWhich type suits your house?
Which type suits your house in Elm Park 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 Elm Park
Elm Park 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 Elm Park
Do you cover Elm Park?
Yes. We cover Elm Park (RM12) and the surrounding area, including Dagenham and Hornchurch. The first site visit is free.
What does a two-storey extension cost in Elm Park?
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 Elm Park do you cover?
Everywhere around it, including Dagenham (1.3 miles), Hornchurch (1.3 miles) and Rainham (1.8 miles), and the rest of Greater London.