Two-storey extensions in Halstead
Need more room in Halstead? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Halstead at a glance
- Postcode districts
- CO9
- Area
- Essex, England
- Price region
- East of England
- Nearest towns
- Braintree (5.9 miles), Sudbury (Suffolk) (7.6 miles), Witham (10 miles), Colchester (11.9 miles)
- Distance to Southend-on-Sea
- about 28.3 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.
Halstead sits about 28.3 miles from Southend-on-Sea. Closer to home, Braintree is 5.9 miles away and Sudbury (Suffolk) 7.6 miles.
Extensions available in Halstead

Two-storey rear extensions
For homes in Halstead: typical guide from £57,500.
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Two-storey side extensions
Halstead guide price from £88,500, Standard spec.
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Two-storey wraparound extensions
For homes in Halstead: typical guide from £124,000.
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Part single, part two-storey extensions
Guide from £74,000 in Halstead, including VAT.
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Extensions over a garage
Guide from £32,500 in Halstead, including VAT.
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First-floor extensions
Halstead guide price from £26,000, Standard spec.
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Two-storey extensions for semi-detached houses
From £57,500 in Halstead. Free visit to firm it up.
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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
From £57,500 (before kitchen units) in Halstead. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Halstead guide price from £57,500 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
The boundaries usually decide it. Two-storey work close to a neighbour needs careful design for light and privacy, so at the visit in Halstead we measure distances to every boundary before suggesting a type.
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 Halstead
Halstead 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 Halstead
Do you cover Halstead?
Yes. We cover Halstead (CO9) and the surrounding area, including Braintree and Sudbury (Suffolk). The first site visit is free.
What does a two-storey extension cost in Halstead?
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 Halstead do you cover?
Everywhere around it, including Braintree (5.9 miles), Sudbury (Suffolk) (7.6 miles) and Witham (10 miles), and the rest of Essex.