1.   Procedure. The regulations, restrictions and boundaries set forth in this chapter may from time to time be amended, supplemented, changed, or repealed, upon initial action by the Council, or upon application by the owner of the land involved, provided, however, that no such action may be taken until after a public hearing in relation thereto, at which parties in interest and citizens shall have an opportunity to be heard. At least seven days’ notice of the time and place of such hearing shall be published in a newspaper of general circulation in the City, and in at least three conspicuous places within the City, one of which shall be the City Hall, one of which shall be upon the property in question, in the form of a sign approximately two feet square, posted in at least one location on each officially recorded lot or plot, along the front lot line of said lot or lots; and one of which shall be on a public bulletin board. When a proposed amendment affects the zoning classification of property, and in case a protest against such change is signed by the owners of 20 percent or more either of the area of the lots included in such proposed change, or of those lots or parcels of land within a 200 foot radius of the boundary lines of the proposed change, then such amendments shall not become effective except by the favorable vote of three-fourths of the City Council. No provision of this subsection should be construed to impact a change in requirements with regard to an existing zoning classification. In the case of additional or different requirements for an existing use, the only notice provided will be publication as required by Code of Iowa Section 414.4 as amended from time to time.

   2.   Filing Fees. Before any action shall be taken as provided in this part, the party or parties proposing a change in district regulations or boundaries shall have deposited with the City Clerk the sum of $75.00 to cover the approximate costs of this procedure and under no conditions shall said sum or any part thereof be refunded for failure of said amendment to be enacted into law.

   3.   Rejection of Amendments. In the event any application seeking amendment of the Zoning Ordinance is submitted by the owner of the land involved and such application for amendment to the Zoning Ordinance is rejected by the Council, no application seeking amendment to the Zoning Ordinance as it affects the same real estate shall be considered by the Commission for 60 days from the date the Council rejects the previous application.