(1) In Low Density Residential PRO zones, all buildings, including accessory buildings and structures, shall not cover more than forty percent (40%) of the area of the lot or parcel of land.

(2) At least fifty percent (50%) of the area of any lot shall be maintained in landscaping as defined in Section 15.20.040, Provo City Code. On any lot, concrete or asphaltic cement shall not cover more than fifty percent (50%) of a front yard, fifty percent (50%) of a rear yard, and one hundred percent (100%) of one (1) side yard.