Home extensions in Widnes
Looking to extend your home in Widnes? Start here: extension types, guide prices for Widnes, the planning rules that apply and how a project runs.
- Postcode districtsWA7, WA8
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Guide prices for Widnes
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 |
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| 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 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
Approvals for an extension in Widnes
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.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
Choosing the right extension in Widnes
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, kitchen extensions and double-storey extensions are often the strongest options, with side return extensions worth considering where there is room.
Areas we cover around Widnes
Our survey diary covers Widnes, including WA7, WA8. Neighbouring towns we cover include Runcorn (1 mile), Warrington (7 miles), Ellesmere Port (9 miles), Northwich (11 miles), Chester (14 miles). Halewood, in Merseyside, is roughly 4 miles from Widnes and also on our list.
Every extension type in Widnes
- Extensions over a garage · from £22,500
- Orangery extensions · from £28,500
- Bungalow extensions · from £24,500
- Porch extensions · from £3,800
- Planning permission for extensions · from £300
- Pitched roof extensions · from £21,000
- Wraparound extensions · from £34,000
- Double-storey extensions · from £36,000
- Bedroom extensions · from £24,500
- Timber frame extensions · from £19,500
- Conservatory replacement extensions · from £19,000
- Kitchen extensions · from £25,500
- Utility and boot room extensions · from £13,000
- Side extensions · from £20,500
- Single-storey rear extensions · from £19,500
- Glass box extensions · from £28,500
- Side return extensions · from £17,000
- Flat roof extensions · from £19,500
- Annexe extensions · from £52,000
- Extension plans and drawings · from £1,100
- Home office extensions · from £15,000
- Building regulations for extensions · from £850
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
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
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 Widnes
How much does an extension cost in Widnes?
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.
Do you cover all of Widnes?
Yes, including the surrounding parts of Cheshire. Site visits are free and there is no obligation.
How long does an extension take in Widnes?
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.
Book a free site visit in Widnes
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.