If the Notice To Comply wasn’t on the agenda for the committee meeting issued before the meeting, then it has no standing and the Notice To Comply (NTC) will be kicked out at the Tribunal (NCAT), for that reason if no other.
If this is an argument about the safety of children versus the look of a building, tell them to take you to NCAT and let a member decide on the basis of photographs that you are happy to provide.