Two-storey extensions in Hornchurch
Planning a bigger home in Hornchurch? Compare extension types and guide prices below, then book a free site visit.
Hornchurch at a glance
- Postcode districts
- RM12
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Elm Park (1.3 miles), Emerson Park (1.4 miles), Upminster (1.7 miles), Romford (1.8 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 Hornchurch (RM12) and the places around it, including Elm Park (1.3 miles), Emerson Park (1.4 miles) and Upminster.
Extensions available in Hornchurch
Two-storey rear extensions
Our London guide starts at £67,000 for this type.
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Two-storey side extensions
Hornchurch guide price from £103,500, Standard spec.
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Two-storey wraparound extensions
From £144,500 in Hornchurch. Free visit to firm it up.
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Part single, part two-storey extensions
Design, approvals and build for Hornchurch homes. Guide from £86,500.
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Extensions over a garage
Hornchurch guide price from £38,000, Standard spec.
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First-floor extensions
Design, approvals and build for Hornchurch homes. Guide from £30,000.
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Two-storey extensions for semi-detached houses
Our London guide starts at £67,000 for this type.
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Two-storey extensions for detached houses
For homes in Hornchurch: typical 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
Hornchurch guide price from £67,000 (plus en-suite), Standard spec.
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 Hornchurch
Hornchurch 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 Hornchurch
Do you cover Hornchurch?
Yes. We cover Hornchurch (RM12) and the surrounding area, including Elm Park and Emerson Park. The first site visit is free.
What does a two-storey extension cost in Hornchurch?
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 Hornchurch do you cover?
Everywhere around it, including Elm Park (1.3 miles), Emerson Park (1.4 miles) and Upminster (1.7 miles), and the rest of Greater London.