The proponents of a planned business district shall prepare and submit a preliminary development plan to the Commission for its inspection and review, upon which plan the Commission shall hold a public hearing. This preliminary plan of the property to be zoned as a District "B-P," drawn to scale, shall show the boundaries of the property proposed to be zoned, the existing topography with contour intervals no greater than five (5) feet, unless waived by the Commission, and the proposed size, location and arrangement of buildings, parking areas, with proposed arrangement of stalls and number of cars, entrance and exit driveways and their relationship to existing and proposed streets, alleys and other public ways or public property, and any additional information required by the Commission. The plan shall show sufficient proposed control grades to interpret the intent of the developer. The preliminary plan shall also show the development of adjacent properties within two hundred (200) feet, including the location and type of buildings and structures thereon. If the planned business district is proposed in an unplatted area, the preliminary plan shall be accompanied by a plat, giving the full legal description of the boundaries of the property to be included in the areas to be zoned as a planned business district. It also shall be accompanied by a plan, drawn to scale, showing the general arrangement of streets within the remainder of such unplatted area, which plan need not extend more than one thousand (1,000) feet from the boundaries of the area to be zoned as a planned business district.