Salford house extensions
We design and build house extensions for homes in Salford and the surrounding Greater Manchester area, with guide prices adjusted for the region.
- Postcode districtsM2, M3, M5, M6, M7, M17
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation

Salford extension prices at a glance
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) |
|---|---|---|
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
Approvals for an extension in Salford
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).
Areas we cover around Salford
Postcode districts we cover around Salford include M2, M3, M5, M6, M7, M17. Nearby, we also take on projects in Eccles (2 miles), Manchester (2 miles), Swinton (3 miles), Stretford (3 miles), Prestwich (3 miles). Just over the Cheshire border, Wilmslow is about 11 miles away.
Which extension suits a Salford home?
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, side return extensions and single-storey rear extensions are often the strongest options, with double-storey extensions worth considering where there is room.
Choose an extension type
- Side return extensions · from £17,000
- Bedroom extensions · from £24,500
- Double-storey extensions · from £36,000
- Building regulations for extensions · from £850
- Side extensions · from £20,500
- Glass box extensions · from £28,500
- Timber frame extensions · from £19,500
- Conservatory replacement extensions · from £19,000
- Bungalow extensions · from £24,500
- Planning permission for extensions · from £300
- Home office extensions · from £15,000
- Porch extensions · from £3,800
- Kitchen extensions · from £25,500
- Utility and boot room extensions · from £13,000
- Flat roof extensions · from £19,500
- Wraparound extensions · from £34,000
- Pitched roof extensions · from £21,000
- Extension plans and drawings · from £1,100
- Annexe extensions · from £52,000
- Orangery extensions · from £28,500
- Extensions over a garage · from £22,500
- Single-storey rear extensions · from £19,500
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
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 Salford
How much does an extension cost in Salford?
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.
How long does an extension take in Salford?
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 handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Book a free site visit in Salford
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.