Extending your home in Crewe
From a small utility to a two-storey addition, we take on house extensions throughout Crewe, starting with a free visit and a planning check.
- Postcode districtsCW1, CW2
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Choosing the right extension in Crewe
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 kitchen extensions, side return extensions and double-storey extensions: between them they cover most of the layouts we see requested for houses like these.
Planning rules in Crewe
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).
What extensions cost in Crewe
We publish guide prices so you can budget before anyone visits. For Crewe they are adjusted by ×0.95, the factor we use across North West England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,500 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
Where we work near Crewe
We cover Crewe and the postcode districts CW1, CW2. Neighbouring towns we cover include Winsford (7 miles), Congleton (11 miles), Northwich (12 miles), Macclesfield (17 miles), Wilmslow (18 miles). Just over the Staffordshire border, Kidsgrove is about 8 miles away.
Extension types and starting prices
- Bungalow extensions · from £24,500
- Timber frame extensions · from £19,500
- Double-storey extensions · from £36,000
- Porch extensions · from £3,800
- Glass box extensions · from £28,500
- Flat roof extensions · from £19,500
- Pitched roof extensions · from £21,000
- Side extensions · from £20,500
- Utility and boot room extensions · from £13,000
- Side return extensions · from £17,000
- Planning permission for extensions · from £300
- Extension plans and drawings · from £1,100
- Extensions over a garage · from £22,500
- Bedroom extensions · from £24,500
- Building regulations for extensions · from £850
- Home office extensions · from £15,000
- Orangery extensions · from £28,500
- Single-storey rear extensions · from £19,500
- Annexe extensions · from £52,000
- Conservatory replacement extensions · from £19,000
- Kitchen extensions · from £25,500
- Wraparound extensions · from £34,000
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
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
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
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 Crewe
How much does an extension cost in Crewe?
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 Crewe, 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 Crewe?
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.
How long does an extension take in Crewe?
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.
Book a free site visit in Crewe
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.