Northamptonshire
Wraparound extensions in Northamptonshire
An L-shaped extension that fills the side return and runs across the back. Rear extensions in Northamptonshire: we cover 8 towns including Northampton, Corby and Kettering, with design, approvals and the build under one contract.
Wraparound projects around Northampton often involve two neighbours, so we start the party wall conversations early. Red-brick terraces and semis are typical of Northamptonshire. Coal-mining legacy areas in parts of the East Midlands can need a Coal Authority check before foundations are designed.
How much does a wraparound extension cost in Northamptonshire?
A wraparound extension in Northamptonshire is priced at £2,130–£3,490 per square metre including VAT as a guide, before kitchen fit-out and fees. East Midlands prices sit a little below our West Midlands baseline.
| Size | Guide price inc VAT |
|---|---|
| L-shaped, about 22 m² of new floor | £47,000–£77,000 |
| L-shaped, about 30 m² of new floor | £64,000–£105,000 |
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 in Northamptonshire?
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.
Where in Northamptonshire do we work?
FAQ
Questions people ask
Does a wraparound need planning permission?
Often yes, because the side and rear parts are judged together. Some fit within permitted development; we check before drawing.
How long does a wraparound take?
Usually 14 to 20 weeks on site, longer than a plain rear extension because of the steelwork.
Can the corner be all glass?
Yes, with a steel or aluminium post or a structural glass corner. It needs careful thermal detailing to meet Building Regulations.
Do you cover all of Northamptonshire?
We cover 8 towns and districts in Northamptonshire, including Northampton, Corby and Kettering.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.