Two-storey extensions in Farnworth
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Farnworth.
Farnworth at a glance
- Postcode districts
- BL4
- Area
- Greater Manchester, England
- Price region
- North West England
- Nearest towns
- Little Lever (1.3 miles), Kearsley (1.3 miles), Little Hulton (1.3 miles), Walkden (2.3 miles)
- Distance to Manchester
- about 8.2 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.
Farnworth sits about 8.2 miles from Manchester. Closer to home, Little Lever is 1.3 miles away and Kearsley 1.3 miles.
Extensions available in Farnworth
Two-storey rear extensions
For homes in Farnworth: typical guide from £53,000.
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Two-storey side extensions
For homes in Farnworth: typical guide from £82,000.
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Two-storey wraparound extensions
Our North West England guide starts at £114,500 for this type.
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Part single, part two-storey extensions
Guide from £68,500 in Farnworth, including VAT.
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Extensions over a garage
For homes in Farnworth: 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
Design, approvals and build for Farnworth homes. Guide from £53,000.
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Two-storey extensions for detached houses
Farnworth guide price from £82,000, Standard spec.
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Kitchen extensions with bedrooms above
Guide from £53,000 (before kitchen units) in Farnworth, including VAT.
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Extra bedroom and en-suite extensions
From £53,000 (plus en-suite) in Farnworth. Free visit to firm it up.
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 Farnworth, with a rough idea of the approval route and cost for each.
Also available in Greater Manchester
- 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 Farnworth
Farnworth 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 Farnworth
Do you cover Farnworth?
Yes. We cover Farnworth (BL4) and the surrounding area, including Little Lever and Kearsley. The first site visit is free.
What does a two-storey extension cost in Farnworth?
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 Farnworth do you cover?
Everywhere around it, including Little Lever (1.3 miles), Kearsley (1.3 miles) and Little Hulton (1.3 miles), and the rest of Greater Manchester.