Tonypandy, South Wales Valleys
Single-storey rear extension in Tonypandy
Thinking about a single-storey rear extension in Tonypandy? Ground-floor space across the back of the house, usually for a kitchen, dining or family room. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
Tonypandy and its postcode districts CF40 are part of our South Wales Valleys coverage. On stone terraces and post-war semis like those around Tonypandy, a single-storey rear extension is usually the simplest way to fix a small back kitchen without touching the bedrooms.
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 Tonypandy?
For Tonypandy we work from the Wales rate: £1,770–£2,880 per square metre of new floor, including VAT, standard specification. Prices in Wales sit below our West Midlands baseline; sloping sites are 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 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a single-storey rear extension in Tonypandy?
The planning route for a single-storey rear extension in Tonypandy is set by Wales's householder rules and your council.
Welsh permitted development allows a single-storey rear extension of up to 4 metres in depth and 4 metres in height, subject to boundary and garden-coverage limits. There is no larger-extension prior approval scheme in Wales.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings 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 Tonypandy like to extend?
Stone terraces along the valley floors and post-war semis higher up are typical of Tonypandy. Sloping sites are common, so floor levels and retaining walls are designed at the start.
How a single-storey rear extension in Tonypandy 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check or householder planning application, then Building Regulations drawings to the Welsh Approved Documents and structural calculations, plus party wall notices where they apply.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Single-storey rear extensions near Tonypandy
From Tonypandy, the nearest places we also cover are Rhondda (2.6 miles) and Pontypridd (5.1 miles).
- Single-storey rear extension in Rhondda
- Single-storey rear extension in Pontypridd
- Single-storey rear extension in Mountain Ash
- Single-storey rear extension in Aberdare
- Single-storey rear extension in Llantrisant
Other work in Tonypandy:
FAQ
Single-storey rear extension questions in Tonypandy
Is the site visit in Tonypandy free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
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.
Will the extension make the room behind it dark?
Not if it is designed well. Rooflights or a lantern over the old back room, and a wide opening into it, keep daylight reaching the middle of the house.
How long does a rear extension take to build in Tonypandy?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Can you match the brick or stone on my Tonypandy house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
What postcode areas do you cover around Tonypandy?
Including CF40, and the surrounding South Wales Valleys area.