Two-storey extensions in Colne
Everything for a two-storey extension in Colne, in one place: types, guide prices for North West England, the approval rules in England and how to get started.
Colne at a glance
- Postcode districts
- BB8
- Area
- Lancashire, England
- Price region
- North West England
- Nearest towns
- Nelson (Lancashire) (2.1 miles), Brierfield (3.5 miles), Barnoldswick (4.2 miles), Burnley (4.8 miles)
- Distance to Preston
- about 22.8 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 postcode district BB8 in and around Colne, along with neighbouring Nelson (Lancashire), Brierfield and Barnoldswick.
Extensions available in Colne
Two-storey rear extensions
Colne guide price from £53,000, Standard spec.
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Two-storey side extensions
Guide from £82,000 in Colne, including VAT.
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Two-storey wraparound extensions
Guide from £114,500 in Colne, including VAT.
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Part single, part two-storey extensions
Colne guide price from £68,500, Standard spec.
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Extensions over a garage
For homes in Colne: typical guide from £30,000.
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First-floor extensions
Our North West England guide starts at £24,000 for this type.
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Two-storey extensions for semi-detached houses
For homes in Colne: typical guide from £53,000.
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Two-storey extensions for detached houses
Our North West England guide starts at £82,000 for this type.
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Kitchen extensions with bedrooms above
Our North West England guide starts at £53,000 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
Our North West England guide starts at £53,000 (plus en-suite) for this type.
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Lancashire, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
Also available in Lancashire
- 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 Colne
Colne 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 Colne
Do you cover Colne?
Yes. We cover Colne (BB8) and the surrounding area, including Nelson (Lancashire) and Brierfield. The first site visit is free.
What does a two-storey extension cost in Colne?
Using our North West 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 £53,000–£72,000 including VAT. An extension over a garage is about £30,000–£43,500.
Which other places near Colne do you cover?
Everywhere around it, including Nelson (Lancashire) (2.1 miles), Brierfield (3.5 miles) and Barnoldswick (4.2 miles), and the rest of Lancashire.