932.1 No building or portion of a building devoted to residential use, including accessory buildings, shall occupy the lot upon which it is located in excess of the percentage of lot occupancy in the following table:

ZONE DISTRICT	MAXIMUM PERCENTAGE OF LOT OCCUPANCY
W-1	80%
W-2,W-3	75%

932.2 Within the W-0 District, no building or portion of a building, including accessory buildings, shall occupy greater than twenty-five percent (25%) of the lot upon which it is located, provided that:

1. (a) The lot occupancy on a lot used exclusively for a recreational use, marina, yacht club, or boathouse buildings and structures shall not exceed fifty percent (50%) and
2. (b) For the purposes of this sub-section, the lot occupancy shall be the total area occupied by all buildings and structures located on land and by any associated permanent structure located on, in, or over water, other than a floating home, divided by the total area of the lot.

930.2 For the purposes of this section, the percentage of lot occupancy in the W-1, W-2, and W-3 Districts may be calculated on a horizontal plane located at the lowest level where residential uses begin.

930.3 For the purposes of this section, the phrase "residential use" shall mean dwellings, flats, multiple dwellings, rooming houses, boarding houses, hospitals, and community-based residential facilities.

SOURCE: § 4406.1 of the Zoning Regulations, effective May 12, 1958; as amended by: Final Rulemaking published at 27 DCR 2066, 2071 (May 16, 1980); Final Rulemaking published at 28 DCR 3482, 3500 (August 7, 1981); and Final Rulemaking published at 31 DCR 6585, 6586 (December 28, 1984); as amended by Final Rulemaking published at 50 DCR 10137 (November 28, 2003); as amended by Final Rulemaking published at 51

DCR 3440 (April 2, 2004); as amended by Final Rulemaking published at 52 DCR 6358 (July 8, 2005).