Llanelli, West Wales
Wraparound extension in Llanelli
Thinking about a wraparound extension in Llanelli? An L-shaped extension that fills the side return and runs across the back. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
Llanelli sits in West Wales, with postcode districts including SA15. Wraparound projects around Llanelli often involve two neighbours, so we start the party wall conversations 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 wraparound extension cost in Llanelli?
Guide prices for a wraparound extension in Llanelli start from our Wales rate of £2,050–£3,350 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 |
|---|---|
| L-shaped, about 22 m² of new floor | £45,000–£73,500 |
| L-shaped, about 30 m² of new floor | £61,500–£100,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a wraparound extension in Llanelli?
Planning for a wraparound extension in Llanelli follows the Welsh householder rules.
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 Llanelli like to extend?
Older terraces near the centre and post-war semis further out are typical of Llanelli. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a wraparound extension in Llanelli 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.
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 Llanelli
We also build wraparound extensions in nearby Gorseinon (5.2 miles) and Swansea (10.3 miles).
- Wraparound extension in Gorseinon
- Wraparound extension in Swansea
- Wraparound extension in Ammanford
- Wraparound extension in Clydach
- Wraparound extension in Carmarthen
Other work in Llanelli:
FAQ
Wraparound extension questions in Llanelli
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.
Does a wraparound need planning permission?
Often yes, because the side and rear parts are judged together. Some fit within permitted development; we check before drawing.
What postcode areas do you cover around Llanelli?
Including SA15, and the surrounding West Wales area.
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.
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.