Nottinghamshire
Building Regulations for rear extensions in Nottinghamshire
Construction drawings, structural calculations and building control through to the completion certificate. We design and build rear extensions across Nottinghamshire, from Nottingham and Mansfield to Worksop, covering single-storey kitchen extensions, two-storey additions, side returns and wraparounds.
Nottinghamshire has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both.
What does it cost in Nottinghamshire?
As a guide, £2,500–£5,500 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 Nottinghamshire?
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.
New fabric must meet Approved Document L (2021 edition incorporating 2023 amendments): walls 0.18, roof 0.15 and floor 0.18 W/m²K, windows 1.4 W/m²K or Band B. Under the simple route, new windows, doors and rooflights should not exceed 25% of the extension floor area plus any openings removed; more glass is possible with a whole-house calculation.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent.
Where in Nottinghamshire do we work?
FAQ
Questions people ask
Full plans or building notice?
Full plans for most extensions: the design is checked before work starts. A building notice suits only simple jobs.
Who inspects the work?
The council's building control team or a registered building control approver (in Scotland, the council's building standards team).
What is a completion certificate?
The document confirming the work meets the regulations. Keep it; buyers' solicitors ask for it.
Do you cover all of Nottinghamshire?
We cover 15 towns and districts in Nottinghamshire, including Nottingham, Mansfield and Worksop.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.