D.C. Mun. Regs. tit. 11-E, § 5003
Building Area
Effective Sep 5, 202572 DCR 009494Authority: § 1 of the Zoning Act of 1938, approved June 20, 1938 (52 Stat. 797), as amended; D.C. Official Code § 6-641.01 (2018 Rep1.), and pursuant to § 6 of the District of Columbia Administrative Procedure Act, approved October 21, 1968 (82 Stat. 1206; D.C. Official Code § 2 505(c) (2016 Repl.)). Source: Final Rulemaking published at 63 DCR 2447, 2887 (March 4, 2016 – Part 2); as amended by Final Rulemaking published at 68 DCR 2908 (March 19, 2021); as amended by Final Rulemaking published at 72 DCR 009494 (September 5, 2025).District of Columbia, Office of the Secretary
5003.1 The maximum building area for an accessory building in an RF zone shall be an area equal to the greater of thirty percent (thirty percent (30%)) of the required rear yard or four-hundred and fifty square feet (450 sq. ft.).
SOURCE: Final Rulemaking published at 63 DCR 2447, 2887 (March 4, 2016 – Part 2); as amended by Final Rulemaking published at 68 DCR 2908 (March 19, 2021); as amended by Final Rulemaking published at 72 DCR 009494 (September 5, 2025).