Every building or structure which may be erected, placed, enlarged, or kept in violation of any provisions of this charter or of any ordinance or regulation lawfully made for the prevention of fires, or any material which shall be stored or kept in violation of this charter or any ordinance or regulation lawfully made for the prevention of fires, is hereby declared to be a nuisance and, except as otherwise in this charter provided, the same may be abated or removed by the direction of the council, after notice as may be provided in State law of a hearing before Council provided to the property owner, with an opportunity to appear, present evidence and witnesses, and to cross-examine any witnesses.