Surrey
Roof lanterns and rooflights for rear extensions in Surrey
Lanterns, flat rooflights and walk-on glass that bring light deep into the plan. Rear extensions in Surrey: we cover 35 towns including Woking, Guildford and Esher, with design, approvals and the build under one contract.
Rear extensions in Surrey gain most from a rooflight placed against the old back wall, where the room would otherwise be darkest. Commuter semis and detached houses make up much of Surrey, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
What does it cost in Surrey?
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 Surrey?
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 Surrey 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 Surrey?
We cover 35 towns and districts in Surrey, including Woking, Guildford and Esher.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.