Porthcawl, South Wales Valleys
Terraced house rear extension in Porthcawl
Terraced house rear extension in Porthcawl: 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.
Porthcawl is covered from our South Wales Valleys round, including CF36. Terraced streets make up much of the housing in parts of the South Wales Valleys, and most rear extensions here go in without side access.
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 Porthcawl?
In Porthcawl, our guide for a terraced house rear extension is £1,910–£3,070 per square metre including VAT for a 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 |
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 terraced house rear extension in Porthcawl?
Whether your terraced house rear extension in Porthcawl needs a planning application depends on its size, your house and any local restrictions.
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 Porthcawl like to extend?
Porthcawl is largely terraced streets on sloping ground, where back gardens step up or down from the house. Excavation, retaining walls and drainage are priced at the survey.
How a terraced house rear extension in Porthcawl 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.
Terraced house rear extensions near Porthcawl
Close by, we work in Pyle, about 2.6 miles away, and Bridgend, about 5.7 miles away.
- Terraced house rear extension in Pyle
- Terraced house rear extension in Bridgend
- Terraced house rear extension in Aberkenfig
- Terraced house rear extension in Coity
- Terraced house rear extension in Maesteg
Other work in Porthcawl:
FAQ
Terraced house rear extension questions in Porthcawl
How much does a terraced house rear extension cost in Porthcawl?
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.
What postcode areas do you cover around Porthcawl?
Including CF36, and the surrounding South Wales Valleys area.
Can you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
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.
Can you match the brick or stone on my Porthcawl house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Is the site visit in Porthcawl free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.