531.1 The maximum permitted density for a building in the D-4-R zone shall be the density achievable within the height and bulk permitted by the zone and any applicable sub-area regulations:
(a) If all of the building's FAR is devoted to residential use;(b) If all FAR exceeding the non-residential density permitted in Subtitle I § 531.5 is devoted to residential use; or(c) If conditions (a) or (b) are not satisfied, through the use of credits pursuant to Subtitle I, Chapters 8 and 9.531.2 A building on a lot in the D-4-R zone shall provide a minimum residential FAR of 4.5 on the lot unless:
(a) The residential requirement is reduced or eliminated by the provisions of Subtitle I §§ 200.3, 200.4, 305.2, or 531.3;(b) The residential requirement is reduced by up to 1.35 FAR through constructing or financially assisting affordable housing pursuant to Subtitle I § 305.6; or(c) If modified through the credit procedures provided in Subtitle I, Chapters 8 and 9.531.3 The residential requirement in Subtitle I § 531.2 shall not apply to the following:
(a) A building on Square 342, Lot 810 that has been used as a hostel since April 7, 2006, that remains in hostel use, and which may be expanded or rebuilt to a maximum 9.5 FAR without a housing requirement;(b) A building in the D-4-R zoned portion of Square 485; and(c) A building on any lot in Square 370 shall be exempt from minimum residential requirements as long as it has a valid construction permit or certificate of occupancy for a hotel.531.4 Except for IZ Plus Inclusionary Developments, residential density in the D-4-R zone is not subject to the Inclusionary Zoning requirements or bonuses of Subtitle C, Chapter 10.
531.5 The maximum permitted non-residential FAR of a building in the D-4-R zone not employing credits enabled by Subtitle I, Chapters 8 and 9 shall be 3.5.
D.C. Mun. Regs. tit. 11, r. 11-I531
Final Rulemaking published at 63 DCR 2447 (9/6/2016); amended by Final Rulemaking published at 64 DCR 000022 (1/6/2017); amended by Final Rulemaking published at 68 DCR 7216 (7/23/2021)