Kent
Knocking through to a rear extension in Kent
Steel beams, padstones and props to open the back of the house safely. Rear extensions in Kent: we cover 31 towns including Maidstone, Gillingham and Chatham, with design, approvals and the build under one contract.

Older houses in Kent often have solid brick back walls carrying a lot of weight, so the steel design comes early. Kent 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 Kent?
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 Kent?
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 Kent 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 Kent?
We cover 31 towns and districts in Kent, including Maidstone, Gillingham and Chatham.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.