Do you need planning permission for air conditioning?

Many domestic installations in England can fall under permitted development, but this is not guaranteed. It depends on where the outdoor unit goes, the property, and any local restrictions.

Things that commonly matter

• Position and size of the outdoor unit — proximity to boundaries and how visible it is from the road.
• Listed buildings — usually require consent; assume permission is needed.
• Conservation areas — extra restrictions often apply.
• Flats and leaseholds — you typically need freeholder or landlord permission regardless of planning rules.

Rules change and interpretation varies by council, so confirm with your local planning authority before installation. This page is general guidance, not planning advice.

If your property is a flat or listed, an installer survey will factor this in. See external-unit placement, or request an installer match.