Two-storey extensions in Irlam
We design, get approval for and build two-storey extensions in Irlam and the surrounding area. Choose the type of extension below or book a free site visit.
Irlam at a glance
- Postcode districts
- M31 and M44
- Area
- Greater Manchester, England
- Price region
- North West England
- Nearest towns
- Urmston (2.9 miles), Sale (4.2 miles), Stretford (4.4 miles), Eccles (4.6 miles)
- Distance to Manchester
- about 8.1 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.
Irlam sits about 8.1 miles from Manchester. Closer to home, Urmston is 2.9 miles away and Sale 4.2 miles.
Extensions available in Irlam

Two-storey rear extensions
From £53,000 in Irlam. Free visit to firm it up.
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Two-storey side extensions
From £82,000 in Irlam. Free visit to firm it up.
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Two-storey wraparound extensions
Design, approvals and build for Irlam homes. Guide from £114,500.
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Part single, part two-storey extensions
Irlam guide price from £68,500, Standard spec.
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Extensions over a garage
Guide from £30,000 in Irlam, including VAT.
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First-floor extensions
Design, approvals and build for Irlam homes. Guide from £24,000.
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Two-storey extensions for semi-detached houses
Guide from £53,000 in Irlam, including VAT.
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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
From £53,000 (before kitchen units) in Irlam. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Our North West England guide starts at £53,000 (plus en-suite) for this type.
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 Irlam we measure distances to every boundary before suggesting a type.
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 Irlam
Irlam 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 Irlam
Do you cover Irlam?
Yes. We cover Irlam (M31 and M44) and the surrounding area, including Urmston and Sale. The first site visit is free.
What does a two-storey extension cost in Irlam?
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 Irlam do you cover?
Everywhere around it, including Urmston (2.9 miles), Sale (4.2 miles) and Stretford (4.4 miles), and the rest of Greater Manchester.