Cambridgeshire
Knocking through to a rear extension in Cambridgeshire
Steel beams, padstones and props to open the back of the house safely. Across Cambridgeshire we handle the whole rear extension: survey, drawings, the planning route, building control and the build. Towns we cover here include Peterborough, Cambridge and Wisbech.

Older houses in Cambridgeshire often have solid brick back walls carrying a lot of weight, so the steel design comes early. Cambridgeshire mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here.
What does it cost in Cambridgeshire?
As a guide, £3,500–£9,000 including VAT. We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
What approvals does it need in Cambridgeshire?
Every rear extension in England needs Building Regulations approval, whether or not planning is needed. You can use the council's building control service or a registered building control approver, by full plans (checked before work, usually within five weeks) or a building notice, and you get a completion certificate at the end.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent.
Where in Cambridgeshire 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 Cambridgeshire?
We cover 11 towns and districts in Cambridgeshire, including Peterborough, Cambridge and Wisbech.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.