Two-storey extensions in Rochford
Everything for a two-storey extension in Rochford, in one place: types, guide prices for the East of England, the approval rules in England and how to get started.
Rochford at a glance
- Postcode districts
- CM0 and SS4
- Area
- Essex, England
- Price region
- East of England
- Nearest towns
- Southend-on-Sea (3.1 miles), Rayleigh (4.4 miles), Hadleigh (4.6 miles), South Benfleet (6.6 miles)
- Distance to Southend-on-Sea
- about 3.1 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.
Around Rochford we also work in Southend-on-Sea, Rayleigh and Hadleigh, and across the rest of Essex. Postcode districts in and near Rochford: CM0 and SS4.
Extensions available in Rochford
Two-storey rear extensions
For homes in Rochford: typical guide from £57,500.
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Two-storey side extensions
Rochford guide price from £88,500, Standard spec.
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Two-storey wraparound extensions
For homes in Rochford: typical guide from £124,000.
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Part single, part two-storey extensions
Design, approvals and build for Rochford homes. Guide from £74,000.
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Extensions over a garage
Design, approvals and build for Rochford homes. Guide from £32,500.
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First-floor extensions
Rochford guide price from £26,000, Standard spec.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Rochford homes. Guide from £57,500.
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Two-storey extensions for detached houses
Our East of England guide starts at £88,500 for this type.
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Kitchen extensions with bedrooms above
Rochford guide price from £57,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
Rochford guide price from £57,500 (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 Essex
- 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 Rochford
Rochford 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 Rochford
Do you cover Rochford?
Yes. We cover Rochford (CM0 and SS4) and the surrounding area, including Southend-on-Sea and Rayleigh. The first site visit is free.
What does a two-storey extension cost in Rochford?
Using our East of England 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 £57,500–£78,000 including VAT. An extension over a garage is about £32,500–£47,500.
Which other places near Rochford do you cover?
Everywhere around it, including Southend-on-Sea (3.1 miles), Rayleigh (4.4 miles) and Hadleigh (4.6 miles), and the rest of Essex.