County Down
Knocking through to a rear extension in County Down
Steel beams, padstones and props to open the back of the house safely. Rear extensions in County Down: we cover 8 towns including Bangor, Castlereagh and Newtownards, with design, approvals and the build under one contract.
Older houses in County Down often have solid brick back walls carrying a lot of weight, so the steel design comes early. Semis and detached houses are typical of County Down, and many have room for a rear extension within Northern Ireland's permitted development limits.
What does it cost in County Down?
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 County Down?
In Northern Ireland building control is run by the councils. A rear extension needs approval (full plans or building notice) and is built to the Northern Ireland Technical Booklets.
Conservation areas, Areas of Outstanding Natural Beauty and listed buildings restrict permitted development in Northern Ireland.
Where in County Down 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 County Down?
We cover 8 towns and districts in County Down, including Bangor, Castlereagh and Newtownards.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.