Atherton house extensions
Looking to extend your home in Atherton? Start here: extension types, guide prices for Atherton, the planning rules that apply and how a project runs.
- Postcode districtsBL5, M29, M46, WN7
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Areas we cover around Atherton
We cover Atherton and the postcode districts BL5, M29, M46, WN7. We also work in nearby Tyldesley (1 mile), Westhoughton (2 miles), Leigh (2 miles), Hindley (4 miles), Walkden (4 miles). Just over the Merseyside border, Golborne is about 5 miles away.
Which extension suits a Atherton home?
The North West has a high share of Victorian and Edwardian terraces with rear yards and outriggers, plus large areas of inter-war semis in the suburbs.
Start by comparing double-storey extensions, single-storey rear extensions and kitchen extensions: between them they cover most of the layouts we see requested for houses like these.
Approvals for an extension in Atherton
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.
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).
Popular extension prices in Atherton
Use these Atherton guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| 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 |
Every extension type in Atherton
- Wraparound extensions · from £34,000
- Double-storey extensions · from £36,000
- Annexe extensions · from £52,000
- Pitched roof extensions · from £21,000
- Porch extensions · from £3,800
- Bungalow extensions · from £24,500
- Planning permission for extensions · from £300
- Utility and boot room extensions · from £13,000
- Single-storey rear extensions · from £19,500
- Side extensions · from £20,500
- Glass box extensions · from £28,500
- Extensions over a garage · from £22,500
- Flat roof extensions · from £19,500
- Side return extensions · from £17,000
- Home office extensions · from £15,000
- Building regulations for extensions · from £850
- Timber frame extensions · from £19,500
- Conservatory replacement extensions · from £19,000
- Orangery extensions · from £28,500
- Extension plans and drawings · from £1,100
- Bedroom extensions · from £24,500
- Kitchen extensions · from £25,500
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Atherton
How much does an extension cost in Atherton?
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Do I need planning permission for an extension in Atherton?
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 Atherton?
Yes, including the surrounding parts of Greater Manchester. Site visits are free and there is no obligation.
Book a free site visit in Atherton
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.