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Northwich, Cheshire

Side return extension in Northwich

Infilling the narrow passage beside a Victorian or Edwardian back addition. We design, get the approvals for and build side return extensions in Northwich and the surrounding area, with one contract from the first survey to building control sign-off.

Northwich sits in Cheshire, with postcode districts including CW9. Side return projects in Northwich usually start with a drainage survey of the side passage.

Book a free site visit

Tell us about the house and we'll call to arrange a free, no-obligation visit.

How much does a side return extension cost in Northwich?

A side return extension in Northwich is priced at £2,160–£3,570 per square metre including VAT as a guide, before kitchen fit-out and fees. North West prices sit below our West Midlands baseline; access on terraced streets is the main variable.

Side return extension prices in Northwich
SizeGuide price inc VAT
2 m wide × 6 m deep (12 m²)£26,000–£43,000
2.5 m wide × 7 m deep (17.5 m²)£38,000–£62,500

Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.

Do you need planning permission for a side return extension in Northwich?

Here is how the rules in England apply to a side return extension in Northwich.

In England the side part of a side return or wraparound must meet the side-extension rules (one storey, under 4 metres high, no more than half the width of the original house), and those rights do not apply on designated land. Because a wraparound combines a side and a rear extension, many need householder planning permission.

Because rear extensions often sit on or near the boundary, the Party Wall etc. Act 1996 usually applies in England. Notices go out one or two months before work depending on the type of work, and a surveyor's award is only needed if a neighbour does not consent.

Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.

What are homes in Northwich like to extend?

Stone and brick terraces are common around Northwich. Where houses back onto a ginnel or alley, deliveries can come in from the rear, which makes the build tidier.

How a side return extension in Northwich comes together

  1. Free site visit

    We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.

  2. Drawings and budget

    Floor plans and elevations for the options, each with a guide price.

  3. Paperwork handled

    Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.

  4. Fixed price and build

    A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.

Side return extensions near Northwich

We also build side return extensions in nearby Winsford (4.7 miles) and Middlewich (5.5 miles).

Other work in Northwich:

All rear extensions in Northwich

FAQ

Side return extension questions in Northwich

Is the site visit in Northwich free?

Yes. We visit, measure up and talk through the options with no cost and no obligation.

Will I need a structural engineer?

Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.

Glass roof or solid roof with rooflights?

A glass roof gives the most light; a solid roof with long rooflights is warmer and quieter in rain. Both work.

How much does a side return extension cost in Northwich?

As a guide, £2,160–£3,570 per square metre including VAT for a standard specification. For example, 2 m wide × 6 m deep (12 m²): about £26,000–£43,000 at that rate. Your written price follows the survey.

Do I need a party wall agreement?

In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.

Who will build my extension?

Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.

Next step

See what your rear extension would cost

Get a guide price online in a couple of minutes, or book a free site visit and we'll measure up and talk you through the planning route.

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