Clydach, Swansea Bay
Terraced house rear extension in Clydach
Terraced house rear extension in Clydach: rear and side return extensions for terraces, with access through the house and two neighbours. We measure the house, show you what the rules allow, price it in writing and build it.
Clydach sits in Swansea Bay, with postcode districts including SA5, SA6 and SA7. On a Clydach terrace both neighbours usually need party wall notices or agreement, so we talk to them early.
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 Clydach?
Guide prices for a terraced house rear extension in Clydach start from our Wales rate of £1,910–£3,070 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 |
|---|---|
| 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 Clydach?
The planning route for a terraced house rear extension in Clydach is set by Wales's householder rules and your council.
In Wales a single-storey rear extension can often be permitted development if it projects no more than 4 metres beyond the rear wall and is no more than 4 metres high. Wales has no prior approval route for deeper extensions, so anything bigger needs a householder planning 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 Clydach like to extend?
Older terraces near the centre and post-war semis further out are typical of Clydach. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a terraced house rear extension in Clydach 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
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 Clydach
Close by, we work in Neath, about 4.3 miles away, and Swansea, about 4.7 miles away.
- Terraced house rear extension in Neath
- Terraced house rear extension in Swansea
- Terraced house rear extension in Briton Ferry
- Terraced house rear extension in Gorseinon
- Terraced house rear extension in Ystalyfera
Other work in Clydach:
FAQ
Terraced house rear extension questions in Clydach
How long does a rear extension take to build in Clydach?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do you handle building control in Clydach?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
How do you keep the house clean?
Dust screens, floor protection and a single protected route through the house.
Can you match the brick or stone on my Clydach house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How much does a terraced house rear extension cost in Clydach?
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.
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.