Whenever the public health, safety and general welfare warrants, the city council may, by ordinance after a report by the planning commission and subject to the procedures provided in this chapter, amend, supplement or change the regulations for zoning of property now or hereafter established by these regulations. An amendment or rezoning may be initiated by the planning commission, the city council, or by a petition of property owners or authorized agents of such owners.
(Ord. of 2-22-2011(1))