Two-storey extensions in Cowpen
We design, get approval for and build two-storey extensions in Cowpen and the surrounding area. Choose the type of extension below or book a free site visit.
Cowpen at a glance
- Postcode districts
- NE24
- Area
- Northumberland, England
- Price region
- North East England
- Nearest towns
- Blyth (1.3 miles), Bedlington (2.1 miles), Stakeford (2.7 miles), Choppington (2.9 miles)
- Distance to Blyth
- about 1.3 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.
Around Cowpen we also work in Blyth, Bedlington and Stakeford, and across the rest of Northumberland. Postcode district in and near Cowpen: NE24.
Extensions available in Cowpen
Two-storey rear extensions
Guide from £50,500 in Cowpen, including VAT.
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Two-storey side extensions
Design, approvals and build for Cowpen homes. Guide from £77,500.
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Two-storey wraparound extensions
Cowpen guide price from £108,500, Standard spec.
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Part single, part two-storey extensions
Guide from £65,000 in Cowpen, including VAT.
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Extensions over a garage
For homes in Cowpen: typical guide from £28,500.
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First-floor extensions
From £22,500 in Cowpen. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Our North East England guide starts at £50,500 for this type.
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Two-storey extensions for detached houses
For homes in Cowpen: typical guide from £77,500.
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Kitchen extensions with bedrooms above
For homes in Cowpen: typical guide from £50,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Guide from £50,500 (plus en-suite) in Cowpen, including VAT.
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 Northumberland
- 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 Cowpen
Cowpen 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 Cowpen
Do you cover Cowpen?
Yes. We cover Cowpen (NE24) and the surrounding area, including Blyth and Bedlington. The first site visit is free.
What does a two-storey extension cost in Cowpen?
Using our North East 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 £50,500–£68,000 including VAT. An extension over a garage is about £28,500–£41,500.
Which other places near Cowpen do you cover?
Everywhere around it, including Blyth (1.3 miles), Bedlington (2.1 miles) and Stakeford (2.7 miles), and the rest of Northumberland.