Aberdare, South Wales Valleys
Terraced house rear extension in Aberdare
Thinking about a terraced house rear extension in Aberdare? Rear and side return extensions for terraces, with access through the house and two neighbours. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
We cover Aberdare (CF44) as part of our South Wales Valleys work. In Aberdare we plan the delivery route through the house and the skip licence before anything else.
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 terraced house rear extension cost in Aberdare?
For Aberdare we work from the Wales rate: £1,910–£3,070 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 × 4.5 m deep (13.5 m²) | £25,500–£41,500 |
| 3 m wide × 6 m deep (18 m²) | £34,500–£55,000 |
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 terraced house rear extension in Aberdare?
Whether your terraced house rear extension in Aberdare needs a planning application depends on its size, your house and any local restrictions.
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.
In Wales, as in England, the Party Wall etc. Act 1996 requires notice to neighbours before work to a shared wall or excavation near their foundations.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings 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 Aberdare like to extend?
Stone terraces along the valley floors and post-war semis higher up are typical of Aberdare. Sloping sites are common, so floor levels and retaining walls are designed at the start.
How a terraced house rear extension in Aberdare 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
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.
Terraced house rear extensions near Aberdare
Neighbouring places we cover include Mountain Ash (3.6 miles) and Rhondda (3.8 miles).
- Terraced house rear extension in Mountain Ash
- Terraced house rear extension in Rhondda
- Terraced house rear extension in Merthyr Tydfil
- Terraced house rear extension in Tonypandy
- Terraced house rear extension in Treharris
Other work in Aberdare:
FAQ
Terraced house rear extension questions in Aberdare
How much does a terraced house rear extension cost in Aberdare?
As a guide, £1,910–£3,070 per square metre including VAT for a standard specification. For example, 3 m wide × 4.5 m deep (13.5 m²): about £25,500–£41,500 at that rate. Your written price follows the 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 both neighbours need party wall notices?
Usually yes in England and Wales, because the extension often sits on or near both boundaries.
How long does a rear extension take to build in Aberdare?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.
Do you handle building control in Aberdare?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.