Two-storey extensions in Ashton-under-Lyne
We design, get approval for and build two-storey extensions in Ashton-under-Lyne and the surrounding area. Choose the type of extension below or book a free site visit.
Ashton-under-Lyne at a glance
- Postcode districts
- OL6 and OL7
- Area
- Greater Manchester, England
- Price region
- North West England
- Nearest towns
- Dukinfield (1 mile), Stalybridge (1.7 miles), Droylsden (2 miles), Denton (2.3 miles)
- Distance to Manchester
- about 5.7 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.
Ashton-under-Lyne sits about 5.7 miles from Manchester. Closer to home, Dukinfield is 1.0 miles away and Stalybridge 1.7 miles.
Extensions available in Ashton-under-Lyne
Two-storey rear extensions
Design, approvals and build for Ashton-under-Lyne homes. Guide from £53,000.
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Two-storey side extensions
Guide from £82,000 in Ashton-under-Lyne, including VAT.
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Two-storey wraparound extensions
From £114,500 in Ashton-under-Lyne. Free visit to firm it up.
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Part single, part two-storey extensions
Design, approvals and build for Ashton-under-Lyne homes. Guide from £68,500.
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Extensions over a garage
For homes in Ashton-under-Lyne: 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
Guide from £53,000 in Ashton-under-Lyne, including VAT.
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Two-storey extensions for detached houses
For homes in Ashton-under-Lyne: typical guide from £82,000.
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Kitchen extensions with bedrooms above
Guide from £53,000 (before kitchen units) in Ashton-under-Lyne, including VAT.
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Extra bedroom and en-suite extensions
From £53,000 (plus en-suite) in Ashton-under-Lyne. 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 Ashton-under-Lyne, 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 Ashton-under-Lyne
Ashton-under-Lyne 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 Ashton-under-Lyne
Do you cover Ashton-under-Lyne?
Yes. We cover Ashton-under-Lyne (OL6 and OL7) and the surrounding area, including Dukinfield and Stalybridge. The first site visit is free.
What does a two-storey extension cost in Ashton-under-Lyne?
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 Ashton-under-Lyne do you cover?
Everywhere around it, including Dukinfield (1 mile), Stalybridge (1.7 miles) and Droylsden (2 miles), and the rest of Greater Manchester.