The City Commission may, from time to time, amend, supplement, or change by Ordinance the boundaries of the districts, classifications of the districts, or the regulations herein established as provided by the Statutes of the State of Texas.

Before taking action on any proposed amendment, supplement or change under Section 2a above, the governing body shall submit the same to the Planning and Zoning Commission for its recommendation and report which shall be made in writing.

If the proposed amendment, supplement or change is to be made in any regulation (which shall exclude any change in boundaries of the districts and classifications of the districts), the Planning and Zoning Commission shall hold a public hearing on any application or City Commission requested change in a regulation prior to making its recommendation and report to the City Commission. Notice of such public hearing shall be given by publication in the official publication of the City of Pampa stating the time and place of such hearing, which time shall not be earlier than fifteen (15) days nor later than ten (10) days from the date of publication.

If the proposed amendment, supplement or change is to be made in any boundaries of the districts or classification of the district, the Planning and Zoning Commission shall hold a public hearing on any application for such amendment, supplement or change prior to making its recommendation and report to the City Commission. Before the 10th day before the hearing date, written notice of the public hearing before the Planning and Zoning Commission on a proposed change in a zoning classification shall be sent to each owner, as indicated by the most recently approved tax roll of the City of Pampa, of real property within 200 feet of the property on which the change in classification is proposed.

A public hearing shall be held by the governing body before adopting any proposed amendment, supplement or change in the boundary of the district, classification of the district or regulation. Notice of such hearing shall be given by publication in the official publication of the City of Pampa stating the time and place of such hearing, which time shall not be earlier than fifteen (15) days nor later than ten (10) days from the date of publication.

Unless a proposed amendment, supplement or change has been approved by the Planning and Zoning Commission, or if a protest against such proposed amendment, supplement or change has been filed with the City Secretary, duly signed and acknowledged by the owners of twenty (20) percent or more of the area of the lots included in such a proposed change, or those immediately adjacent in the rear thereof extending two hundred (200) feet therefrom or of those directly opposite thereto extending two hundred (200) feet from the street frontage of such opposite lots, such amendment shall not become effective except by a three-fourths (3/4) vote of the governing body. In computing the percentage of land area under this paragraph f, the area of streets and alleys shall be included.