Dewsbury, West Yorkshire
Single-storey rear extension in Dewsbury
Single-storey rear extension in Dewsbury: ground-floor space across the back of the house, usually for a kitchen, dining or family room. We measure the house, show you what the rules allow, price it in writing and build it.
Dewsbury is covered from our West Yorkshire round, including BD19, WF12, WF13 and WF15. A depth of 3 to 4 metres keeps many single-storey rear extensions in Dewsbury within permitted development, subject to the house's planning history.
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 single-storey rear extension cost in Dewsbury?
Guide prices for a single-storey rear extension in Dewsbury start from our Yorkshire and the Humber rate of £1,770–£2,880 per square metre, including VAT. Yorkshire prices sit below our West Midlands baseline; matching natural stone is the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £21,000–£34,500 |
| 4 m wide × 5 m deep (20 m²) | £35,500–£57,500 |
| 4 m wide × 6 m deep (24 m²) | £42,500–£69,000 |
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 single-storey rear extension in Dewsbury?
Whether your single-storey rear extension in Dewsbury needs a planning application depends on its size, your house and any local restrictions.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part is within 2 metres of a boundary.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
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 Dewsbury like to extend?
Stone terraces and brick semis are typical of Dewsbury. Matching sandstone or gritstone on a terrace is one of the biggest cost variables, and reclaimed stone is often the best match.
How a single-storey rear extension in Dewsbury 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
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.
Single-storey rear extensions near Dewsbury
We also build single-storey rear extensions in nearby Batley (0.9 miles) and Ossett (2.1 miles).
- Single-storey rear extension in Batley
- Single-storey rear extension in Ossett
- Single-storey rear extension in Heckmondwike
- Single-storey rear extension in Liversedge
- Single-storey rear extension in Mirfield
Other work in Dewsbury:
FAQ
Single-storey rear extension questions in Dewsbury
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.
What postcode areas do you cover around Dewsbury?
Including BD19, WF12, WF13, WF15, WF16 and WF17, and the surrounding West Yorkshire area.
Is a flat roof or a pitched roof better?
A warm flat roof keeps the extension low under first-floor windows and suits a roof lantern; a pitched or lean-to roof gives a vaulted ceiling. Both last for decades when built properly.
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.
Is the site visit in Dewsbury free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Dewsbury?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.