Two-storey extensions in Horwich
Everything for a two-storey extension in Horwich, in one place: types, guide prices for North West England, the approval rules in England and how to get started.
Horwich at a glance
- Postcode districts
- BL6
- Area
- Greater Manchester, England
- Price region
- North West England
- Nearest towns
- Westhoughton (3.8 miles), Chorley (4.3 miles), Hindley (4.9 miles), Bolton (4.9 miles)
- Distance to Manchester
- about 15.3 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.
We cover Horwich (BL6) and the places around it, including Westhoughton (3.8 miles), Chorley (4.3 miles) and Hindley.
Extensions available in Horwich
Two-storey rear extensions
Our North West England guide starts at £53,000 for this type.
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Two-storey side extensions
Guide from £82,000 in Horwich, including VAT.
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Two-storey wraparound extensions
Guide from £114,500 in Horwich, including VAT.
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Part single, part two-storey extensions
Guide from £68,500 in Horwich, including VAT.
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Extensions over a garage
Design, approvals and build for Horwich homes. Guide from £30,000.
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First-floor extensions
Horwich guide price from £24,000, Standard spec.
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Two-storey extensions for semi-detached houses
From £53,000 in Horwich. Free visit to firm it up.
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Two-storey extensions for detached houses
From £82,000 in Horwich. Free visit to firm it up.
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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
Guide from £53,000 (plus en-suite) in Horwich, including VAT.
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Greater Manchester, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
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 Horwich
Horwich 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 Horwich
Do you cover Horwich?
Yes. We cover Horwich (BL6) and the surrounding area, including Westhoughton and Chorley. The first site visit is free.
What does a two-storey extension cost in Horwich?
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 Horwich do you cover?
Everywhere around it, including Westhoughton (3.8 miles), Chorley (4.3 miles) and Hindley (4.9 miles), and the rest of Greater Manchester.