Crumpsall, Greater Manchester
Single-storey rear extension in Crumpsall
Ground-floor space across the back of the house, usually for a kitchen, dining or family room. If you live in Crumpsall and want to know what a single-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Crumpsall is covered from our Greater Manchester round, including M4, M8 and M9. A depth of 3 to 4 metres keeps many single-storey rear extensions in Crumpsall within permitted development, subject to the house's planning history.
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 single-storey rear extension cost in Crumpsall?
A single-storey rear extension in Crumpsall is priced at £1,790–£2,910 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) | £21,500–£35,000 |
| 4 m wide × 5 m deep (20 m²) | £35,500–£58,500 |
| 4 m wide × 6 m deep (24 m²) | £43,000–£70,000 |
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 single-storey rear extension in Crumpsall?
Here is how the rules in England apply to a single-storey rear extension in Crumpsall.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres within 2 metres of a boundary.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
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 Crumpsall like to extend?
Stone and brick terraces are common around Crumpsall. Where houses back onto a ginnel or alley, deliveries can come in from the rear, which makes the build tidier.
How a single-storey rear extension in Crumpsall comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Single-storey rear extensions near Crumpsall
From Crumpsall, the nearest places we also cover are Blackley (1.2 miles) and Cheetham Hill (1.4 miles).
- Single-storey rear extension in Blackley
- Single-storey rear extension in Cheetham Hill
- Single-storey rear extension in Prestwich
- Single-storey rear extension in Manchester City Centre
- Single-storey rear extension in Manchester
Other work in Crumpsall:
FAQ
Single-storey rear extension questions in Crumpsall
Do I need planning permission for a rear extension in Crumpsall?
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.
Can you match the brick or stone on my Crumpsall house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Can I stay in the house during the build?
Usually yes. The noisiest, dustiest stage, removing the back wall, is kept to the final weeks and screened off. Most families set up a temporary kitchen elsewhere in the house.
How long does a rear extension take to build in Crumpsall?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
What postcode areas do you cover around Crumpsall?
Including M4, M8 and M9, and the surrounding Greater Manchester area.
Do you handle building control in Crumpsall?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.