Two-storey extensions in Bolton
Need more room in Bolton? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Bolton at a glance
- Postcode districts
- BL1, BL2, BL3 and BL7
- Area
- Greater Manchester, England
- Price region
- North West England
- Nearest towns
- Little Lever (2.7 miles), Farnworth (2.7 miles), Little Hulton (3.5 miles), Kearsley (4 miles)
- Distance to Manchester
- about 10.7 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.
Around Bolton we also work in Little Lever, Farnworth and Little Hulton, and across the rest of Greater Manchester. Postcode districts in and near Bolton: BL1, BL2, BL3 and BL7.
Extensions available in Bolton
Two-storey rear extensions
Our North West England guide starts at £53,000 for this type.
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Two-storey side extensions
For homes in Bolton: typical guide from £82,000.
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Two-storey wraparound extensions
Bolton guide price from £114,500, Standard spec.
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Part single, part two-storey extensions
Guide from £68,500 in Bolton, including VAT.
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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
Our North West England guide starts at £24,000 for this type.
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Two-storey extensions for semi-detached houses
Our North West England guide starts at £53,000 for this type.
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Two-storey extensions for detached houses
Guide from £82,000 in Bolton, including VAT.
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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
Bolton guide price from £53,000 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
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 Bolton
Bolton 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 Bolton
Do you cover Bolton?
Yes. We cover Bolton (BL1, BL2, BL3 and BL7) and the surrounding area, including Little Lever and Farnworth. The first site visit is free.
What does a two-storey extension cost in Bolton?
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 Bolton do you cover?
Everywhere around it, including Little Lever (2.7 miles), Farnworth (2.7 miles) and Little Hulton (3.5 miles), and the rest of Greater Manchester.