Two-storey extensions in Mossley
Need more room in Mossley? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Mossley at a glance
- Postcode districts
- OL5
- Area
- Greater Manchester, England
- Price region
- North West England
- Nearest towns
- Lees (2.3 miles), Stalybridge (2.3 miles), Uppermill (2.6 miles), Saddleworth (2.7 miles)
- Distance to Manchester
- about 8.7 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.
We cover postcode district OL5 in and around Mossley, along with neighbouring Lees, Stalybridge and Uppermill.
Extensions available in Mossley

Two-storey rear extensions
Guide from £53,000 in Mossley, including VAT.
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Two-storey side extensions
Our North West England guide starts at £82,000 for this type.
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Two-storey wraparound extensions
Design, approvals and build for Mossley homes. Guide from £114,500.
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Part single, part two-storey extensions
Our North West England guide starts at £68,500 for this type.
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Extensions over a garage
Design, approvals and build for Mossley homes. Guide from £30,000.
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First-floor extensions
From £24,000 in Mossley. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Mossley homes. Guide from £53,000.
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Two-storey extensions for detached houses
Our North West England guide starts at £82,000 for this type.
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Kitchen extensions with bedrooms above
For homes in Mossley: typical guide from £53,000 (before kitchen units).
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Extra bedroom and en-suite extensions
From £53,000 (plus en-suite) in Mossley. Free visit to firm it up.
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 Mossley we also design annexes, home offices and bedrooms over garages.
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 Mossley
Mossley 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 Mossley
Do you cover Mossley?
Yes. We cover Mossley (OL5) and the surrounding area, including Lees and Stalybridge. The first site visit is free.
What does a two-storey extension cost in Mossley?
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 Mossley do you cover?
Everywhere around it, including Lees (2.3 miles), Stalybridge (2.3 miles) and Uppermill (2.6 miles), and the rest of Greater Manchester.