CIL Permitted Development and Prior Notification Development
In rare cases, permitted development (that is development which does not require planning permission) may be of sufficient scale to be liable to CIL. You must serve a Notice of Chargeable Development on us before the development is commenced. The CIL charge is then calculated and applied as though planning permission had been issued.
The same applies to development granted planning permission under the Prior Notification process, particularly conversions of offices to residential accommodation.