501

501.1 The minimum pervious surface percentage shall be as required by the development standards for the R and RF zones.

501.2 The minimum pervious surface percentage requirement shall be applicable only in conjunction with the following:

(a) The construction of a new principal structure;

(b) An addition to a principal or accessory structure, other than a historic resource, that increases the existing lot occupancy at the time of building permit application by ten percent (10%) or more;

(c) The construction of a new accessory structure that increases the existing lot occupancy at the time of building permit application by ten percent (10%) or more; or

(d) An addition to a historic resource that increases the existing lot occupancy at the time of building permit application by twenty-five percent (25%) or more.

SOURCE: Final Rulemaking published at 63 DCR 2447, 2712 (March 4, 2016 – Part 2).