siggy_7
Full time tool collector, part time woodworker
This from the IET website
Part P applies to electrical installations located in outbuildings such as detached garages, sheds and greenhouses.
and confirmed on many other sites. Even to the extent of adding new sockets. Here for instance ...page 9
See the Part P regulations Page 8 additional note f, I quote directly: "Detached Garages and sheds are not special locations. Work within them is notifiable only if it involves new outdoor wiring". This would clearly indicate to me that any work in detached buildings is not notifiable to building control. That would be squarely at odds with page 9 of that document you sent to me. Certainly I disagree with the notion in that document that a bedroom circuit modification is not notifiable, whereas a detached building modification is.