House extensions in Saddleworth
Every type of house extension in Saddleworth, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsOL3
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation

Planning and building control in Saddleworth
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 extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
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.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
Guide prices for Saddleworth
We publish guide prices so you can budget before anyone visits. For Saddleworth they are adjusted by ×0.95, the factor we use across North West England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,500 |
Choosing the right extension in Saddleworth
Across the North West, terraced houses with small rear yards suit compact rear and side return extensions, while suburban semis have room for more.
Start by comparing side return extensions, single-storey rear extensions and kitchen extensions: between them they cover most of the layouts we see requested for houses like these.
Covering Saddleworth and nearby
We cover Saddleworth and the postcode districts OL3. The same team covers Oldham (5 miles), Stalybridge (5 miles), Royton (5 miles), Chadderton (6 miles), Ashton-under-Lyne (6 miles), all within easy reach. Huddersfield, in West Yorkshire, is roughly 11 miles from Saddleworth and also on our list.
Extension types and starting prices
- Planning permission for extensions · from £300
- Home office extensions · from £15,000
- Timber frame extensions · from £19,500
- Building regulations for extensions · from £850
- Conservatory replacement extensions · from £19,000
- Side extensions · from £20,500
- Orangery extensions · from £28,500
- Single-storey rear extensions · from £19,500
- Flat roof extensions · from £19,500
- Utility and boot room extensions · from £13,000
- Pitched roof extensions · from £21,000
- Kitchen extensions · from £25,500
- Annexe extensions · from £52,000
- Bedroom extensions · from £24,500
- Side return extensions · from £17,000
- Glass box extensions · from £28,500
- Bungalow extensions · from £24,500
- Wraparound extensions · from £34,000
- Double-storey extensions · from £36,000
- Extensions over a garage · from £22,500
- Porch extensions · from £3,800
- Extension plans and drawings · from £1,100
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Saddleworth
How much does an extension cost in Saddleworth?
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.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Do I need planning permission for an extension in Saddleworth?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
Do you cover all of Saddleworth?
Yes, including the surrounding parts of Greater Manchester. Site visits are free and there is no obligation.
Book a free site visit in Saddleworth
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.