North Wales
Knocking through to a rear extension in North Wales
Steel beams, padstones and props to open the back of the house safely. Rear extensions in North Wales: we cover 14 towns including Wrexham, Buckley and Deeside, with design, approvals and the build under one contract.
Older houses in North Wales often have solid brick back walls carrying a lot of weight, so the steel design comes early. Older terraces near the centre and post-war semis further out are typical of North Wales. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
What does it cost in North Wales?
As a guide, £3,500–£9,000 including VAT. Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
What approvals does it need in North Wales?
In Wales a rear extension needs Building Regulations approval through the council or a registered approver, and is built to the Welsh Approved Documents, which differ from England's in places, including energy efficiency.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent.
Where in North Wales do we work?
FAQ
Questions people ask
Can the whole back wall come out?
Often, with a beam across the full width or a goalpost frame. Some walls need a short pier left at the ends.
Do I need building control for a beam?
Yes. The calculations and the installed steel are checked.
How long does it take?
The wall itself usually comes out in a day or two, timed for when the extension is weathertight.
Do you cover all of North Wales?
We cover 14 towns and districts in North Wales, including Wrexham, Buckley and Deeside.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.