Melksham, Wiltshire
Two-storey rear extension in Melksham
Thinking about a two-storey rear extension in Melksham? A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
We cover Melksham (SN12) as part of our Wiltshire work. Two-storey rear extensions suit semi-detached houses in Melksham best, where the extra bedroom matters as much as the bigger kitchen.
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 two-storey rear extension cost in Melksham?
For Melksham we work from the South West England rate: £1,870–£2,810 per square metre of new floor, including VAT, 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 |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £56,000–£84,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £90,000–£135,000 |
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 for a two-storey rear extension in Melksham?
The planning route for a two-storey rear extension in Melksham is set by England's householder rules and your council.
England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.
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 Melksham like to extend?
Stone-built and rendered houses are common around Melksham, 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 two-storey rear extension in Melksham 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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.
Two-storey rear extensions near Melksham
Close by, we work in Neston, about 3.8 miles away, and Corsham, about 4.7 miles away.
- Two-storey rear extension in Neston
- Two-storey rear extension in Corsham
- Two-storey rear extension in Trowbridge
- Two-storey rear extension in Chippenham
- Two-storey rear extension in Devizes
Other work in Melksham:
FAQ
Two-storey rear extension questions in Melksham
How much does a two-storey rear extension cost in Melksham?
As a guide, £1,870–£2,810 per square metre including VAT for a standard specification. For example, 3 m × 5 m footprint, two floors (30 m²): about £56,000–£84,000 at that rate. Your written price follows the survey.
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.
Does a two-storey rear extension need planning permission?
Almost always. England and Northern Ireland allow 3 metres without an application only if at least 7 metres remains to the rear boundary; Wales and Scotland are similar or stricter.
Do I need planning permission for a rear extension in Melksham?
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.
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.
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.