Lincolnshire
Roof lanterns and rooflights for rear extensions in Lincolnshire
Lanterns, flat rooflights and walk-on glass that bring light deep into the plan. Rear extensions in Lincolnshire: we cover 17 towns including Lincoln, Grimsby and Scunthorpe, with design, approvals and the build under one contract.

Rear extensions in Lincolnshire gain most from a rooflight placed against the old back wall, where the room would otherwise be darkest. Lincolnshire has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both.
What does it cost in Lincolnshire?
As a guide, £2,200–£4,500 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 Lincolnshire?
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 Lincolnshire do we work?
FAQ
Questions people ask
Lantern or flat rooflight?
A lantern gives height and a feature; a flat rooflight is cleaner and lower-profile.
Do rooflights count towards the 25% glazing limit?
Yes, in England's simple route; more is possible with a calculation.
Can a rooflight open?
Yes, manually or electrically, with rain sensors.
Do you cover all of Lincolnshire?
We cover 17 towns and districts in Lincolnshire, including Lincoln, Grimsby and Scunthorpe.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.