Amersham, Buckinghamshire
Wraparound extension in Amersham
For homes in Amersham, 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.
Amersham is covered from our Buckinghamshire round, including HP6 and HP7. Wraparound projects around Amersham 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 Amersham?
In Amersham, our guide for a wraparound extension is £2,460–£4,030 per square metre including VAT for a standard specification. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| L-shaped, about 22 m² of new floor | £54,000–£88,500 |
| L-shaped, about 30 m² of new floor | £74,000–£121,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a wraparound extension in Amersham?
Planning for a wraparound extension in Amersham 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. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Amersham like to extend?
Commuter semis and detached houses make up much of Amersham, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a wraparound extension in Amersham comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
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 Amersham
Neighbouring places we cover include Amersham on the Hill (0.7 miles) and Chesham (2.4 miles).
- Wraparound extension in Amersham on the Hill
- Wraparound extension in Chesham
- Wraparound extension in Beaconsfield
- Wraparound extension in Chorleywood
- Wraparound extension in Chalfont St Peter
Other work in Amersham:
FAQ
Wraparound extension questions in Amersham
Do you handle building control in Amersham?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Is the site visit in Amersham free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
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.
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.
Can you match the brick or stone on my Amersham house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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.