West Sussex
Knocking through to a rear extension in West Sussex
Steel beams, padstones and props to open the back of the house safely. Rear extensions in West Sussex: we cover 15 towns including Crawley, Worthing and Bognor Regis, with design, approvals and the build under one contract.
Older houses in West Sussex often have solid brick back walls carrying a lot of weight, so the steel design comes early. West Sussex has a mix of Victorian terraces near the centre and larger Edwardian and inter-war houses further out. Clay soils across much of the South East mean deeper foundations near trees, which we plan for at the survey.
What does it cost in West Sussex?
As a guide, £3,500–£9,000 including VAT. These are guide ranges; the written quote after the survey is the figure that counts.
What approvals does it need in West Sussex?
Planning and Building Regulations are separate in England: even a permitted development extension is inspected for foundations, drainage, structure, insulation, fire safety and ventilation, through the council or a registered building control approver, ending with a completion certificate.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent.
Where in West Sussex 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 West Sussex?
We cover 15 towns and districts in West Sussex, including Crawley, Worthing and Bognor Regis.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.