Tonypandy, South Wales Valleys
Side return extension in Tonypandy
We plan and build side return extensions for homeowners in Tonypandy. Infilling the narrow passage beside a Victorian or Edwardian back addition. Start with a free site visit, then a written price once the design is agreed.
Tonypandy and its postcode districts CF40 are part of our South Wales Valleys coverage. Side returns suit the Victorian and Edwardian terraces found across parts of the South Wales Valleys, where the kitchen sits in a narrow back addition.
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 side return extension cost in Tonypandy?
Guide prices for a side return extension in Tonypandy start from our Wales rate of £2,140–£3,530 per square metre, including VAT. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 2 m wide × 6 m deep (12 m²) | £25,500–£42,500 |
| 2.5 m wide × 7 m deep (17.5 m²) | £37,500–£62,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a side return extension in Tonypandy?
The planning route for a side return extension in Tonypandy is set by Wales's householder rules and your council.
In Wales a single-storey side extension can be permitted development if it is no more than 4 metres high and the house ends up no more than 50% wider than the original. Many side return infills on terraced streets, and most wraparounds, go through a householder application.
The Party Wall etc. Act 1996 also applies in Wales: two months' notice for work to a shared wall and one month for foundations dug close to a neighbour's building.
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 side return 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.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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.
Side return extensions near Tonypandy
From Tonypandy, the nearest places we also cover are Rhondda (2.6 miles) and Pontypridd (5.1 miles).
- Side return extension in Rhondda
- Side return extension in Pontypridd
- Side return extension in Mountain Ash
- Side return extension in Aberdare
- Side return extension in Llantrisant
Other work in Tonypandy:
FAQ
Side return extension questions in Tonypandy
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 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.
Do I need my neighbour's permission?
Not their permission, but in England and Wales you must serve party wall notices, and a neighbour can consent in writing or ask for a surveyor's award.
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.
Is the site visit in Tonypandy free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Tonypandy?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.