Two-storey extensions in Chorley
Homeowners in Chorley can use us for the whole project or just the drawings and approvals. Start with a free visit.
Chorley at a glance
- Postcode districts
- PR6 and PR7
- Area
- Lancashire, England
- Price region
- North West England
- Nearest towns
- Clayton-le-Woods (3.9 miles), Horwich (4.3 miles), Leyland (4.4 miles), Darwen (7 miles)
- Distance to Preston
- about 8.6 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 districts PR6 and PR7 in and around Chorley, along with neighbouring Clayton-le-Woods, Horwich and Leyland.
Extensions available in Chorley
Two-storey rear extensions
From £53,000 in Chorley. Free visit to firm it up.
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Two-storey side extensions
For homes in Chorley: 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
For homes in Chorley: typical guide from £68,500.
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Extensions over a garage
Chorley guide price from £30,000, Standard spec.
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First-floor extensions
Design, approvals and build for Chorley homes. Guide from £24,000.
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Two-storey extensions for semi-detached houses
Chorley guide price from £53,000, Standard spec.
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Two-storey extensions for detached houses
Guide from £82,000 in Chorley, including VAT.
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Kitchen extensions with bedrooms above
From £53,000 (before kitchen units) in Chorley. Free visit to firm it up.
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Extra bedroom and en-suite extensions
For homes in Chorley: typical guide from £53,000 (plus en-suite).
Learn moreWhich type suits your house?
The boundaries usually decide it. Two-storey work close to a neighbour needs careful design for light and privacy, so at the visit in Chorley we measure distances to every boundary before suggesting a type.
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 Chorley
Chorley 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 Chorley
Do you cover Chorley?
Yes. We cover Chorley (PR6 and PR7) and the surrounding area, including Clayton-le-Woods and Horwich. The first site visit is free.
What does a two-storey extension cost in Chorley?
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 Chorley do you cover?
Everywhere around it, including Clayton-le-Woods (3.9 miles), Horwich (4.3 miles) and Leyland (4.4 miles), and the rest of Lancashire.