The principal building and any accessory building on the lot shall not exceed total lot occupancy of thirty percent (30%); provided that on lots of six thousand, four hundred ninety-nine square feet (6,499 ft.2) or less, the maximum permitted lot occupancy shall be forty percent (40%); on lots of six thousand, five hundred square feet (6,500 ft.2) to eight thousand, nine hundred ninety-nine square feet (8,999 ft.2), the maximum permitted lot occupancy shall be thirty-five percent (35%), but not less than two thousand, six hundred square feet (2,600 ft.2); and on lots of nine thousand square feet (9,000 ft.2) or more, the maximum permitted lot occupancy shall be thirty percent (30%), but not less than three thousand one hundred fifty square feet (3,150 ft.2).
The maximum impervious surface coverage on a lot shall be fifty percent (50%), provided this subsection shall not:
D.C. Mun. Regs. tit. 11, r. 11-1567