Darragh O'Brien (Dublin Fingal, Fianna Fail) | Oireachtas source

It would be very unusual, frankly, but potentially it could be for environmental reasons. It could be because something was carried out on the site that should not have been carried out but that would lead to an enforcement notice. I am trying to think myself of what the reason could be for refusal if a development was substantially complete and the works had been carried out on foot of the permission that was granted. If an extension is sought the planning authority will look at it on its merits. It does have the ability to refuse it but I cannot tell the Deputy on what grounds.