Chislehurst, Greater London
Wraparound extension in Chislehurst
For homes in Chislehurst, 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.
Chislehurst and its postcode districts BR7, DA14 and SE9 are part of our Greater London coverage. Wraparound projects around Chislehurst 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 Chislehurst?
Guide prices for a wraparound extension in Chislehurst start from our London rate of £2,860–£4,680 per square metre, including VAT. London prices sit at the top of our range because of labour rates, access through the house, parking suspensions and skip licences.
| Size | Guide price inc VAT |
|---|---|
| L-shaped, about 22 m² of new floor | £63,000–£103,000 |
| L-shaped, about 30 m² of new floor | £86,000–£140,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a wraparound extension in Chislehurst?
Planning for a wraparound extension in Chislehurst follows the English householder rules.
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 Chislehurst like to extend?
Much of Chislehurst is 1920s and 1930s semis and short terraces with longer gardens than inner London, which suit full-width single-storey rear extensions. Parking suspensions, skip licences and controlled hours on residential streets shape the programme more than the build itself.
How a wraparound extension in Chislehurst 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.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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.
Wraparound extensions near Chislehurst
We also build wraparound extensions in nearby Bickley (1.5 miles) and Sidcup (1.6 miles).
- Wraparound extension in Bickley
- Wraparound extension in Sidcup
- Wraparound extension in Eltham
- Wraparound extension in Orpington
- Wraparound extension in Welling
Other work in Chislehurst:
FAQ
Wraparound extension questions in Chislehurst
How much does a wraparound extension cost in Chislehurst?
As a guide, £2,860–£4,680 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £63,000–£103,000 at that rate. Your written price follows the survey.
How long does a rear extension take to build in Chislehurst?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Is it worth it over a side return alone?
If you want a dining table and a sofa as well as the kitchen, usually yes.
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.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.