Hi Anita
I take it the owner has made a request for a change of categorisation.
In the 1st instance I would contact regulatory and get them to investigate why the owner hasn’t applied for consent and they can follow that up.
However as long as Section 516 is being complied with the category should be residential as 516 doesn’t rely on the DA consent.
Not applying for consent and it’s enforcement is another matter for Council.
Happy to hear other people thoughts.
Hope this helps.
Robert