House extensions in Ashton-under-Lyne
We design and build house extensions for homes in Ashton-under-Lyne and the surrounding Greater Manchester area, with guide prices adjusted for the region.
- Postcode districtsM34, M43, OL6, OL7, SK15, SK16
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
What works best for Ashton-under-Lyne houses?
Across the North West, terraced houses with small rear yards suit compact rear and side return extensions, while suburban semis have room for more.
Depending on the plot, kitchen extensions and double-storey extensions are often the strongest options, with single-storey rear extensions worth considering where there is room.
Areas we cover around Ashton-under-Lyne
Postcode districts we cover around Ashton-under-Lyne include M34, M43, OL6, OL7, SK15, SK16. The same team covers Dukinfield (1 mile), Stalybridge (2 miles), Droylsden (2 miles), Denton (2 miles), Hyde (3 miles), all within easy reach. Wilmslow, in Cheshire, is roughly 12 miles from Ashton-under-Lyne and also on our list.
Approvals for an extension in Ashton-under-Lyne
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a single-storey side return infill is often permitted development if it stays within the height limits and is no wider than half the width of the original house. Conservation areas, listed buildings and flats always need an application, and the boundary wall usually brings in the Party Wall Act.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
What extensions cost in Ashton-under-Lyne
We publish guide prices so you can budget before anyone visits. For Ashton-under-Lyne they are adjusted by ×0.95, the factor we use across North West England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
Choose an extension type
- Single-storey rear extensions · from £19,500
- Pitched roof extensions · from £21,000
- Annexe extensions · from £52,000
- Building regulations for extensions · from £850
- Glass box extensions · from £28,500
- Kitchen extensions · from £25,500
- Side return extensions · from £17,000
- Home office extensions · from £15,000
- Extension plans and drawings · from £1,100
- Bungalow extensions · from £24,500
- Conservatory replacement extensions · from £19,000
- Bedroom extensions · from £24,500
- Double-storey extensions · from £36,000
- Timber frame extensions · from £19,500
- Orangery extensions · from £28,500
- Side extensions · from £20,500
- Planning permission for extensions · from £300
- Flat roof extensions · from £19,500
- Wraparound extensions · from £34,000
- Extensions over a garage · from £22,500
- Utility and boot room extensions · from £13,000
- Porch extensions · from £3,800
Free site visit
We visit your Ashton-under-Lyne home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Ashton-under-Lyne
How much does an extension cost in Ashton-under-Lyne?
Using our North West England factor (×0.95), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,500 including VAT, and a 32 m² two-storey extension £54,500 to £71,500. Your written price follows the survey.
How long does an extension take in Ashton-under-Lyne?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Do you cover all of Ashton-under-Lyne?
Yes, including the surrounding parts of Greater Manchester. Site visits are free and there is no obligation.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Ashton-under-Lyne
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.