Extensions in Hindley: design, planning and build
Looking to extend your home in Hindley? Start here: extension types, guide prices for Hindley, the planning rules that apply and how a project runs.
- Postcode districtsWN2
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Where we work near Hindley
We cover Hindley and the postcode districts WN2. We also work in nearby Wigan (2 miles), Westhoughton (3 miles), Leigh (4 miles), Atherton (4 miles), Ashton-in-Makerfield (4 miles). Just over the Merseyside border, Golborne is about 4 miles away.
Which extension suits a Hindley 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.
Depending on the plot, single-storey rear extensions and double-storey extensions are often the strongest options, with kitchen extensions worth considering where there is room.
Approvals for an extension in Hindley
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 two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
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 Hindley
Prices on this page use our North West England factor of ×0.95, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Side return extensions | 11 m² | £25,000 – £31,500 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,500 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
Extension types and starting prices
- Planning permission for extensions · from £300
- Side extensions · from £20,500
- Bungalow extensions · from £24,500
- Annexe extensions · from £52,000
- Extensions over a garage · from £22,500
- Porch extensions · from £3,800
- Double-storey extensions · from £36,000
- Kitchen extensions · from £25,500
- Utility and boot room extensions · from £13,000
- Building regulations for extensions · from £850
- Orangery extensions · from £28,500
- Conservatory replacement extensions · from £19,000
- Bedroom extensions · from £24,500
- Flat roof extensions · from £19,500
- Pitched roof extensions · from £21,000
- Timber frame extensions · from £19,500
- Extension plans and drawings · from £1,100
- Glass box extensions · from £28,500
- Wraparound extensions · from £34,000
- Single-storey rear extensions · from £19,500
- Home office extensions · from £15,000
- Side return extensions · from £17,000
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
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
With the design and specification agreed, you get a fixed written price and a start date.
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 Hindley
How much does an extension cost in Hindley?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Hindley, and the guide-price tool gives a range for your own size and finish in about a minute.
How long does an extension take in Hindley?
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.
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 Hindley?
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.
Book a free site visit in Hindley
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.