Irlam, Greater Manchester
Glazed rear extension in Irlam
Full-height glass, slim frames and big rooflights for the most open rear room. If you live in Irlam and want to know what a glazed rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
We cover Irlam (M44) as part of our Greater Manchester work. A wide sliding door with one long rooflight, rather than a fully glazed roof, keeps a glass-led extension usable in summer.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a glazed rear extension cost in Irlam?
A glazed rear extension in Irlam is priced at £2,630–£4,510 per square metre including VAT as a guide, before kitchen fit-out and fees. North West prices sit below our West Midlands baseline; access on terraced streets is the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £31,500–£54,000 |
| 4 m wide × 6 m deep (24 m²) | £63,000–£108,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a glazed rear extension in Irlam?
Planning for a glazed rear extension in Irlam follows the English householder rules.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is within 2 metres of a boundary.
New fabric must meet Approved Document L (2021 edition incorporating 2023 amendments): walls 0.18, roof 0.15 and floor 0.18 W/m²K, windows 1.4 W/m²K or Band B. Under the simple route, new windows, doors and rooflights should not exceed 25% of the extension floor area plus any openings removed; more glass is possible with a whole-house calculation.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Irlam like to extend?
Stone and brick terraces are common around Irlam. Where houses back onto a ginnel or alley, deliveries can come in from the rear, which makes the build tidier.
How a glazed rear extension in Irlam comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Glazed rear extensions near Irlam
Neighbouring places we cover include Urmston (2.9 miles) and Sale (4.2 miles).
- Glazed rear extension in Urmston
- Glazed rear extension in Sale
- Glazed rear extension in Stretford
- Glazed rear extension in Eccles
- Glazed rear extension in Timperley
Other work in Irlam:
FAQ
Glazed rear extension questions in Irlam
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Do I need planning permission for a rear extension in Irlam?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Is there a limit on how much glass I can have?
In England the simple rule is 25% of the floor area plus openings removed; more is allowed with a calculation showing the house still meets Part L.
Do you handle building control in Irlam?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
What postcode areas do you cover around Irlam?
Including M44, and the surrounding Greater Manchester area.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.