(a) Parking lots for other than single-family dwellings that are 2,000 square feet in area or smaller shall be constructed of gravel to a depth of four inches as a minimum standard.
(b) Parking lots for other than single-family dwellings that are larger than 2,000 square feet in area shall be all-weather, dust-free and constructed of the following materials or combination thereof:
(1) Concrete.
(2) Asphalt, exclusive of asphalt millings, except as base course.
(3) Prime and seal.