Penarth, Cardiff and the Vale
Wraparound extension in Penarth
Wraparound extension in Penarth: an L-shaped extension that fills the side return and runs across the back. We measure the house, show you what the rules allow, price it in writing and build it.
Penarth and its postcode districts CF64 are part of our Cardiff and the Vale coverage. Wraparound projects around Penarth 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 Penarth?
A wraparound extension in Penarth is priced at £2,050–£3,350 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 |
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 wraparound extension in Penarth?
Here is how the rules in Wales apply to a wraparound extension in Penarth.
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 Penarth like to extend?
Older terraces near the centre and post-war semis further out are typical of Penarth. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a wraparound extension in Penarth 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.
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.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Wraparound extensions near Penarth
From Penarth, the nearest places we also cover are Cardiff (2.9 miles) and Whitchurch (5.4 miles).
- Wraparound extension in Cardiff
- Wraparound extension in Whitchurch
- Wraparound extension in Barry
- Wraparound extension in Rhiwbina
- Wraparound extension in Caerphilly
Other work in Penarth:
FAQ
Wraparound extension questions in Penarth
How much does a wraparound extension cost in Penarth?
As a guide, £2,050–£3,350 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £45,000–£73,500 at that rate. Your written price follows the survey.
Can you match the brick or stone on my Penarth house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Is it worth it over a side return alone?
If you want a dining table and a sofa as well as the kitchen, usually yes.
Do you handle building control in Penarth?
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 Penarth free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
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.