Trowbridge, Wiltshire
Wraparound extension in Trowbridge
An L-shaped extension that fills the side return and runs across the back. If you live in Trowbridge and want to know what a wraparound extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Trowbridge and its postcode districts BA14 are part of our Wiltshire coverage. Wraparound projects around Trowbridge 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 Trowbridge?
In Trowbridge, our guide for a wraparound extension is £2,290–£3,740 per square metre including VAT for a standard specification. South West prices run slightly above our West Midlands baseline; natural stone to match the house is the main variable.
| Size | Guide price inc VAT |
|---|---|
| L-shaped, about 22 m² of new floor | £50,500–£82,500 |
| L-shaped, about 30 m² of new floor | £68,500–£112,500 |
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 wraparound extension in Trowbridge?
Here is how the rules in England apply to a wraparound extension in Trowbridge.
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 Trowbridge like to extend?
Stone-built and rendered houses are common around Trowbridge, so matching the walling is a design decision in its own right: natural stone, reconstituted stone or a render finish across old and new.
How a wraparound extension in Trowbridge comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
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 Trowbridge
Close by, we work in Westbury, about 4.2 miles away, and Melksham, about 4.8 miles away.
- Wraparound extension in Westbury
- Wraparound extension in Melksham
- Wraparound extension in Neston
- Wraparound extension in Bath
- Wraparound extension in Frome
Other work in Trowbridge:
FAQ
Wraparound extension questions in Trowbridge
Do I need planning permission for a rear extension in Trowbridge?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
How long does a rear extension take to build in Trowbridge?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Will it take a lot of garden?
Less than a deep rear extension of the same area, because part of the space comes from the side passage.
What postcode areas do you cover around Trowbridge?
Including BA14, and the surrounding Wiltshire area.
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.
Is the site visit in Trowbridge free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.