Two-storey extensions in Brierfield
We design, get approval for and build two-storey extensions in Brierfield and the surrounding area. Choose the type of extension below or book a free site visit.
Brierfield at a glance
- Postcode districts
- BB9
- Area
- Lancashire, England
- Price region
- North West England
- Nearest towns
- Nelson (Lancashire) (1.5 miles), Burnley (1.7 miles), Colne (3.5 miles), Padiham (3.7 miles)
- Distance to Preston
- about 19.7 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.
Brierfield sits about 19.7 miles from Preston. Closer to home, Nelson (Lancashire) is 1.5 miles away and Burnley 1.7 miles.
Extensions available in Brierfield
Two-storey rear extensions
Brierfield guide price from £53,000, Standard spec.
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Two-storey side extensions
Design, approvals and build for Brierfield homes. Guide from £82,000.
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Two-storey wraparound extensions
From £114,500 in Brierfield. Free visit to firm it up.
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Part single, part two-storey extensions
For homes in Brierfield: typical guide from £68,500.
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Extensions over a garage
Our North West England guide starts at £30,000 for this type.
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First-floor extensions
From £24,000 in Brierfield. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Brierfield guide price from £53,000, Standard spec.
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Two-storey extensions for detached houses
Design, approvals and build for Brierfield homes. Guide from £82,000.
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Kitchen extensions with bedrooms above
From £53,000 (before kitchen units) in Brierfield. Free visit to firm it up.
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Extra bedroom and en-suite extensions
For homes in Brierfield: typical guide from £53,000 (plus en-suite).
Learn moreWhich type suits your house?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in Brierfield we also design annexes, home offices and bedrooms over garages.
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 Brierfield
Brierfield 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 Brierfield
Do you cover Brierfield?
Yes. We cover Brierfield (BB9) and the surrounding area, including Nelson (Lancashire) and Burnley. The first site visit is free.
What does a two-storey extension cost in Brierfield?
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 Brierfield do you cover?
Everywhere around it, including Nelson (Lancashire) (1.5 miles), Burnley (1.7 miles) and Colne (3.5 miles), and the rest of Lancashire.