Ashton-under-Lyne, Greater Manchester
Two-storey rear extension in Ashton-under-Lyne
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We design, get the approvals for and build two-storey rear extensions in Ashton-under-Lyne and the surrounding area, with one contract from the first survey to building control sign-off.
Ashton-under-Lyne is covered from our Greater Manchester round, including M34, M43, OL6 and OL7. In Ashton-under-Lyne, a two-storey rear extension is worth comparing with the cost of moving once stamp duty, agents' and legal fees are counted.
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 two-storey rear extension cost in Ashton-under-Lyne?
In Ashton-under-Lyne, our guide for a two-storey rear extension is £1,690–£2,540 per square metre including VAT for a standard specification. North West prices sit below our West Midlands baseline; access on terraced streets is the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £51,000–£76,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £81,000–£122,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a two-storey rear extension in Ashton-under-Lyne?
Here is how the rules in England apply to a two-storey rear extension in Ashton-under-Lyne.
A two-storey rear extension can be permitted development in England only if it projects no more than 3 metres, stays at least 7 metres from the rear boundary, matches the existing roof pitch and has obscure-glazed upper side windows. In practice most double-storey rear extensions go through a householder planning application.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Ashton-under-Lyne like to extend?
Ashton-under-Lyne has long runs of terraced houses with back yards and alleys, plus 1930s semis further out. Yard extensions on terraces are often single-storey and close to both boundaries.
How a two-storey rear extension in Ashton-under-Lyne comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
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.
Two-storey rear extensions near Ashton-under-Lyne
From Ashton-under-Lyne, the nearest places we also cover are Dukinfield (1.1 miles) and Stalybridge (1.7 miles).
- Two-storey rear extension in Dukinfield
- Two-storey rear extension in Stalybridge
- Two-storey rear extension in Droylsden
- Two-storey rear extension in Denton
- Two-storey rear extension in Hollinwood
Other work in Ashton-under-Lyne:
FAQ
Two-storey rear extension questions in Ashton-under-Lyne
What postcode areas do you cover around Ashton-under-Lyne?
Including M34, M43, OL6, OL7, SK14 and SK16, and the surrounding Greater Manchester area.
Do you handle building control in Ashton-under-Lyne?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Is two-storey cheaper per square metre than single-storey?
Usually yes, because the foundations and roof are shared across twice the floor area. The total cost is higher.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
How long does a rear extension take to build in Ashton-under-Lyne?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.