Both neighbour and I have granny flat, mine is new and approved however been getting some grief from the neighbour about mine (complaints about noise etc), although they are the one with unapproved structure.
Lodged council enquiry, and officer advised they have inspected and cannot determine whether it was approved or not as its too old and they have no record, so they decided to not to prosecute as they might be on losing side in a court case.
Has the council got the right to do this? Or can I make the council take any further action apart from letting it be? I'm not after tearing it down prosecution but at least make them comply it, engineers report, drawing, basix, fees etc.
Sounds like you're being salty? Are you going to do anything about the noise complaints?