The Board of Aldermen may from time to time on its own motion or on petition amend, supplement, change, modify or repeal by ordinance the boundaries of the districts or regulations or restrictions established. Any proposed amendment, supplement, change, modification or repeal should first be submitted to the Planning and Zoning Commission for its recommendations and report. If the Planning and Zoning Commission makes no report within thirty (30) days, it should be considered to have made a report approving the proposed amendment, supplement, modification or change. Upon the filing of the recommendations and report by the Planning and Zoning Commission with respect to any proposed amendment, supplement, change, modification or repeal, the Board of Aldermen should proceed to hold a public hearing in relation thereto, giving at least fifteen (15) days' notice of the time and place of such hearing, which notice should first be published in a newspaper having a general circulation in the City.

In case of an adverse report by the Planning and Zoning Commission, or if a project against such proposed amendment, supplement, change, modification or repeal was presented in writing to the City Clerk duly signed and acknowledged by the owners of thirty percent (30%) or more, either of the area of the land (exclusive of streets, places and alleys) included within such proposed amendment, supplement, change, modifications or repeal or within an area determined by lines drawn parallel to and one hundred eighty-five (185) feet distant from the boundaries of the district proposed to be changed, such amendment, supplement, change, modification or repeal should not become effective except by the favorable vote of two-thirds (2/3) of all the members of the Board of Aldermen. The increased vote requirement should apply in all cases of special use exception and planned unit development cases.

The party or parties proposing or recommending a change in the district regulations or district boundaries should deposit a fee as stated in Section 405.450 to the City Clerk at the time the application is filed and obtain a receipt therefor which should be delivered to the City Clerk, and an additional fee as stated in Section 405.450 should be paid to the City Clerk prior to the time publication of "notice of public hearing" is ordered by the Board of Aldermen and obtain a receipt therefor. All fees received hereunder should forthwith be paid over to the credit of the General Fund of the City. Under no condition should said sum or any part thereof be refunded for failure of said change to be adopted by the Board of Aldermen.