Prestwich house extensions
Every type of house extension in Prestwich, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsM7, M8, M25, M45
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Where we work near Prestwich
Site visits are available across Prestwich (M7, M8, M25, M45). Nearby, we also take on projects in Whitefield (1 mile), Radcliffe (3 miles), Salford (3 miles), Swinton (4 miles), Middleton (4 miles). Rawtenstall, in Lancashire, is roughly 12 miles from Prestwich and also on our list.
What extensions cost in Prestwich
Every figure below is a guide for Prestwich, adjusted for North West England build costs (×0.95) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Single-storey rear extensions | 20 m² | £38,500 – £49,500 |
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
Planning and building control in Prestwich
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).
Choosing the right extension in Prestwich
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, side return extensions and single-storey rear extensions: between them they cover most of the layouts we see requested for houses like these.
All extension types we build in Prestwich
- Kitchen extensions · from £25,500
- Planning permission for extensions · from £300
- Side extensions · from £20,500
- Side return extensions · from £17,000
- Extension plans and drawings · from £1,100
- Timber frame extensions · from £19,500
- Bedroom extensions · from £24,500
- Glass box extensions · from £28,500
- Conservatory replacement extensions · from £19,000
- Building regulations for extensions · from £850
- Bungalow extensions · from £24,500
- Utility and boot room extensions · from £13,000
- Single-storey rear extensions · from £19,500
- Pitched roof extensions · from £21,000
- Extensions over a garage · from £22,500
- Porch extensions · from £3,800
- Annexe extensions · from £52,000
- Flat roof extensions · from £19,500
- Wraparound extensions · from £34,000
- Orangery extensions · from £28,500
- Double-storey extensions · from £36,000
- Home office extensions · from £15,000
Free site visit
We visit your Prestwich home, measure up, talk through what you want and check the planning position.
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
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 Prestwich
How much does an extension cost in Prestwich?
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 Prestwich, and the guide-price tool gives a range for your own size and finish in about a minute.
Do I need planning permission for an extension in Prestwich?
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 Prestwich?
Yes, including the surrounding parts of Greater Manchester. Site visits are free and there is no obligation.
Book a free site visit in Prestwich
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.