(A) Amendment by City Council. The City Council may, from time to time, on its own action or on petition, after public notice and hearings as provided herein and after report by the City Planning and Zoning Commission, amend, supplement or change the boundaries or regulations herein or subsequently established and such amendment shall not become effective except by a favorable vote of the City Council, as set forth in the Code of Iowa.
(B) Amendment by petition. Whenever any person, firm or corporation desires that any amendment or change be made in this Code, including the text and/or map, as to any property in the city, there shall be presented to the Planning and Zoning Commission a petition requesting such change or amendment and clearly describing the property and its boundaries as to which the change or amendment is desired, duly signed by the owner or owners of all real estate included within the boundaries of said tract as described in said petition. It shall be the duty of the Planning and Zoning Commission to vote upon such petition within 60 days after the filing of such petition.
(C) Fee required. Any person petitioning for a change in zoning district boundaries or the requirements of this Code shall pay a fee at the time of filing an application for said change in accordance with § 160.64.
(D) Public hearing and notification requirements. No regulation, restriction or boundary shall become effective until after public hearings have been held by the Planning and Zoning Commission and City Council at which parties in interest and citizens shall have an opportunity to be heard. The notice of the time and place of the hearings shall be provided in accordance with the Code of Iowa. If an amendment, change, supplement or repeal has been requested by petition, property owners within 200 feet of the exterior boundaries of the property covered by the petition shall be notified by the Department of Community Development in accordance with adopted procedures.
(E) Action on petition. If a proposed amendment, supplement, change or repeal of the regulations, restrictions or boundaries is disapproved by the Planning and Zoning Commission, or a written protest against a change or repeal is filed with the City Clerk and signed by the owners of 20% or more of the area of the lots included in the proposed change or repeal, or by 20% or more of the property which is located within 200 feet of the exterior boundaries of the property for which the change or repeal is proposed, then the change or repeal shall not become effective except by the favorable vote of at least three-fourths of all the members of the council. Whenever any petition for an amendment, supplement, change or repeal of the regulations, restrictions or boundaries has been denied by the City Council, no new petition covering the same property or a portion thereof, or the same property and additional property, shall be filed or considered until one year shall have elapsed from the date of filing the first petition.