Identical zoning regulations among cities and counties comprising joint planning unit not required

planning unit not required. Except as provided in KRS 100.137(3), nothing contained in this chapter shall be construed or implied as requiring the legislative bodies of cities and counties comprising the same joint planning unit to adopt identical zoning regulations. Nor shall the adoption or amendment of a zoning regulation by the legislative body of any city or county contained within a joint planning unit be made contingent on the adoption or amendment of such zoning regulation by the legislative body of any other city or county within the planning unit.