Usually not. A roof lantern normally falls under permitted development when it sits on an extension that is itself permitted development, or when it projects no more than 150 mm above an existing roof plane. Listed buildings, conservation areas, flats and Article 4 directions can remove those rights.
When does a roof lantern need planning permission?
- The building is listed, or the property is a flat or maisonette
- The property is in a conservation area, national park or other designated land, where rules are stricter
- An Article 4 direction has removed permitted development rights
- The lantern takes a new extension above the height limits (4 m overall, or 3 m at the eaves within 2 m of a boundary)
Does a roof lantern need Building Regulations approval?
Yes, the work does, even where planning is not needed. The roof must support the lantern, and a new rooflight must reach a U-value of 2.2 W/m²K or better under Approved Document L. Building control or a registered competent person signs the work off.
How do I check before ordering?
Ask your local planning authority or use the Planning Portal. For certainty, a lawful development certificate confirms in writing that the proposal is permitted development.
Wednesfield Trade Windows is a family-run, Certass registered installer, and the survey confirms what needs sign-off on your property. See our roof lanterns for more detail.
Thinking about a roof lantern? We supply and fit lantern roofs across Wolverhampton and the surrounding area, and you deal directly with us, the owners. Call 01902 633355, message us on WhatsApp, or request a quote.