The principal building and any accessory building on the lot shall not exceed total lot occupancy of thirty percent (30%).
The maximum impervious surface coverage on a lot shall be fifty percent (50%); provided this subsection shall not:
To the extent a side yard is required in the underlying zone district, the minimum side yard requirement for all buildings, accessory buildings, or additions to buildings shall be twenty-four (24) feet in the aggregate, with no single side yard having a width of less than eight (8) feet.
D.C. Mun. Regs. tit. 11, r. 11-1518