Wraparound extensions for homes in Northwich
Northwich homeowners can use us for the whole wraparound extension project: survey, design, planning or permitted development checks, building regulations and the build itself.
- Guide price in NorthwichFrom £34,000 inc VAT
- PlanningUsually a householder application
- Build time14–20 weeks on site
- Postcode districtsCW8, CW9
Planning rules that apply in Northwich
In England a wraparound extension is assessed as both a side and a rear extension, and the combination usually falls outside permitted development, so most need a householder planning application (£548 from 1 April 2026).
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
Building over or within 3 m of a public sewer needs the water company's consent, usually through a build-over agreement, before the foundations go in.
Applications are decided by the local planning authority (your district, borough or unitary council).
What we take care of
- Full internal finish or kitchen-ready shell
- Foundations, drainage and any manhole relocation
- Survey, design and 3D layout options
- Householder planning application
- Roof with glazing along the side return
Wraparound extension prices in Northwich
These guide figures apply our North West England adjustment (×0.95) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
Typical rates in Northwich: £1,900 to £3,520 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| Compact L-shape 18 m² | £34,000 – £41,500 | £39,000 – £50,000 | £49,500 – £63,500 |
| Medium L-shape 25 m² | £47,500 – £57,000 | £54,500 – £69,000 | £68,500 – £88,000 |
| Large L-shape 32 m² | £60,500 – £73,000 | £69,500 – £88,500 | £88,000 – £112,500 |
Try the guide-price tool to see a range for your own size and finish.
Local to Northwich
Site visits are available across Northwich (CW8, CW9). We also work in nearby Winsford (5 miles), Warrington (10 miles), Runcorn (10 miles), Widnes (11 miles).
Across the North West, terraced houses with small rear yards suit compact rear and side return extensions, while suburban semis have room for more.
What happens next
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
We visit your Northwich home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Common questions in Northwich
Will my neighbours in Northwich be involved?
If a planning application or prior approval is needed, the council notifies neighbours. If the work is on or near a shared boundary, party wall notices may also be needed.
Do you cover all of Northwich?
Yes. We cover Northwich and the surrounding parts of Cheshire. Site visits are free and there is no obligation.
Who do I contract with for a wraparound extension in Northwich?
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.
How much does a wraparound extension cost?
Our guide range is about £1,900 to £3,520 per m² including VAT. A 25 m² standard-spec wraparound typically lands around £54,500 to £69,000 in Northwich before design and council fees.
Do wraparound extensions need planning permission?
Usually, yes. In England the side element counts as a side extension and the rear element as a rear extension, and the combination normally falls outside permitted development. A householder application costs £548 in England from 1 April 2026.
Book a free site visit in Northwich
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.