Briton Ferry, Swansea Bay
Terraced house rear extension in Briton Ferry
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Briton Ferry and want to know what a terraced house rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Briton Ferry is covered from our Swansea Bay round, including SA10, SA11 and SA12. Terraced streets make up much of the housing in parts of Swansea Bay, 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 Briton Ferry?
For Briton Ferry 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 Briton Ferry?
Planning for a terraced house rear extension in Briton Ferry follows the Welsh householder rules.
The Welsh Government's householder rules let many homes add a single-storey rear extension up to 4 metres deep and 4 metres high without a planning application. Deeper projects go through a householder application, because Wales has no prior approval route.
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 Briton Ferry like to extend?
Older terraces near the centre and post-war semis further out are typical of Briton Ferry. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a terraced house rear extension in Briton Ferry 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.
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 Briton Ferry
Close by, we work in Neath, about 2.3 miles away, and Clydach, about 5.0 miles away.
- Terraced house rear extension in Neath
- Terraced house rear extension in Clydach
- Terraced house rear extension in Swansea
- Terraced house rear extension in Maesteg
- Terraced house rear extension in Pyle
Other work in Briton Ferry:
FAQ
Terraced house rear extension questions in Briton Ferry
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.
What postcode areas do you cover around Briton Ferry?
Including SA10, SA11 and SA12, and the surrounding Swansea Bay 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.
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.
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.
Is the site visit in Briton Ferry free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.