Barry, Cardiff and the Vale
Kitchen-diner rear extension in Barry
An open-plan kitchen, dining and family room that opens straight onto the garden. If you live in Barry and want to know what a kitchen-diner rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
We cover Barry (CF62 and CF63) as part of our Cardiff and the Vale work. We usually keep the working kitchen where the old one was and put the dining table in the new space by the doors, which suits most Barry homes.
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 kitchen-diner rear extension cost in Barry?
Guide prices for a kitchen-diner rear extension in Barry start from our Wales rate of £1,770–£2,880 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 |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £21,000–£34,500 |
| 4 m wide × 5 m deep (20 m²) | £35,500–£57,500 |
| 4 m wide × 6 m deep (24 m²) | £42,500–£69,000 |
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 kitchen-diner rear extension in Barry?
The planning route for a kitchen-diner rear extension in Barry is set by Wales's householder rules and your council.
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.
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 Barry like to extend?
Older terraces near the centre and post-war semis further out are typical of Barry. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a kitchen-diner rear extension in Barry 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Paperwork handled
Planning or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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.
Kitchen-diner rear extensions near Barry
Close by, we work in Penarth, about 5.5 miles away, and Cardiff, about 7.1 miles away.
- Kitchen-diner rear extension in Penarth
- Kitchen-diner rear extension in Cardiff
- Kitchen-diner rear extension in Whitchurch
- Kitchen-diner rear extension in Llantwit Major
- Kitchen-diner rear extension in Rhiwbina
Other work in Barry:
FAQ
Kitchen-diner rear extension questions in Barry
Can you match the brick or stone on my Barry house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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.
Do you fit the kitchen?
Yes, whether you buy it yourself or we supply it. We take the measurements from the built shell, not the drawings.
Do you handle building control in Barry?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
What postcode areas do you cover around Barry?
Including CF62 and CF63, and the surrounding Cardiff and the Vale area.
How long does a rear extension take to build in Barry?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.