Grantham, Lincolnshire
Wraparound extension in Grantham
For homes in Grantham, a wraparound extension is often the simplest way to gain space without moving. An L-shaped extension that fills the side return and runs across the back. We take it from survey to completion certificate.
We cover Grantham (NG31) as part of our Lincolnshire work. Wraparound projects around Grantham often involve two neighbours, so we start the party wall conversations early.
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 wraparound extension cost in Grantham?
For Grantham we work from the East Midlands rate: £2,130–£3,490 per square metre of new floor, including VAT, standard specification. 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 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a wraparound extension in Grantham?
The planning route for a wraparound extension in Grantham is set by England's householder rules and your council.
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. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Grantham like to extend?
Red-brick terraces and semis are typical of Grantham. Coal-mining legacy areas in parts of the East Midlands can need a Coal Authority check before foundations are designed.
How a wraparound extension in Grantham comes together
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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Wraparound extensions near Grantham
Close by, we work in Sleaford, about 11.4 miles away, and Newark on Trent, about 13.0 miles away.
- Wraparound extension in Sleaford
- Wraparound extension in Newark on Trent
- Wraparound extension in Melton Mowbray
- Wraparound extension in Bourne
- Wraparound extension in Oakham
Other work in Grantham:
FAQ
Wraparound extension questions in Grantham
Is the site visit in Grantham free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How much does a wraparound extension cost in Grantham?
As a guide, £2,130–£3,490 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £47,000–£77,000 at that rate. Your written price follows the survey.
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 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.
What postcode areas do you cover around Grantham?
Including NG31, and the surrounding Lincolnshire area.
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.