Swansea, Swansea Bay
Wraparound extension in Swansea
An L-shaped extension that fills the side return and runs across the back. We design, get the approvals for and build wraparound extensions in Swansea and the surrounding area, with one contract from the first survey to building control sign-off.
Swansea is covered from our Swansea Bay round, including SA2, SA3, SA4 and SA5. Wraparounds are the natural next step for the end-of-terrace and Victorian houses in Swansea Bay where a side return alone would leave the room too narrow.
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 wraparound extension cost in Swansea?
In Swansea, our guide for a wraparound extension is £2,050–£3,350 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 |
|---|---|
| L-shaped, about 22 m² of new floor | £45,000–£73,500 |
| L-shaped, about 30 m² of new floor | £61,500–£100,500 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a wraparound extension in Swansea?
The planning route for a wraparound extension in Swansea 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. At the first visit we measure what is there now and tell you which route fits: permitted development or a householder planning application.
What are homes in Swansea like to extend?
Older terraces near the centre and post-war semis further out are typical of Swansea. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a wraparound extension in Swansea comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check or householder planning application, then Building Regulations drawings to the Welsh Approved Documents and structural calculations, plus party wall notices where they apply.
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.
Wraparound extensions near Swansea
Close by, we work in Clydach, about 4.7 miles away, and Briton Ferry, about 5.4 miles away.
- Wraparound extension in Clydach
- Wraparound extension in Briton Ferry
- Wraparound extension in Gorseinon
- Wraparound extension in Neath
- Wraparound extension in Llanelli
Other work in Swansea:
FAQ
Wraparound extension questions in Swansea
Do you handle building control in Swansea?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
Is the site visit in Swansea free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Will it take a lot of garden?
Less than a deep rear extension of the same area, because part of the space comes from the side passage.
How long does a rear extension take to build in Swansea?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.
Do I need a party wall agreement?
In Wales, usually yes if the extension is on or near a shared boundary or close to a neighbour's foundations. We serve the notices.