Two-storey extensions in Chafford Hundred
Homeowners in Chafford Hundred can use us for the whole project or just the drawings and approvals. Start with a free visit.
Chafford Hundred at a glance
- Postcode districts
- RM19 and RM20
- Area
- Essex, England
- Price region
- East of England
- Nearest towns
- South Ockendon (1.4 miles), Grays (1.6 miles), Swanscombe (3 miles), Chadwell St Mary (3 miles)
- Distance to Southend-on-Sea
- about 18.4 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 Chafford Hundred (RM19 and RM20) and the places around it, including South Ockendon (1.4 miles), Grays (1.6 miles) and Swanscombe.
Extensions available in Chafford Hundred
Two-storey rear extensions
Chafford Hundred guide price from £57,500, Standard spec.
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Two-storey side extensions
Chafford Hundred guide price from £88,500, Standard spec.
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Two-storey wraparound extensions
Chafford Hundred guide price from £124,000, Standard spec.
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Part single, part two-storey extensions
Design, approvals and build for Chafford Hundred homes. Guide from £74,000.
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Extensions over a garage
Chafford Hundred guide price from £32,500, Standard spec.
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First-floor extensions
Guide from £26,000 in Chafford Hundred, including VAT.
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Two-storey extensions for semi-detached houses
For homes in Chafford Hundred: typical guide from £57,500.
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Two-storey extensions for detached houses
Chafford Hundred guide price from £88,500, Standard spec.
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Kitchen extensions with bedrooms above
For homes in Chafford Hundred: typical guide from £57,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Chafford Hundred guide price from £57,500 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Chafford Hundred, with a rough idea of the approval route and cost for each.
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 Chafford Hundred
Chafford Hundred 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 Chafford Hundred
Do you cover Chafford Hundred?
Yes. We cover Chafford Hundred (RM19 and RM20) and the surrounding area, including South Ockendon and Grays. The first site visit is free.
What does a two-storey extension cost in Chafford Hundred?
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 Chafford Hundred do you cover?
Everywhere around it, including South Ockendon (1.4 miles), Grays (1.6 miles) and Swanscombe (3 miles), and the rest of Essex.