207.1 Except as provided elsewhere in this title, the minimum required rear yard shall be as set forth in the following table:

TABLE F § 207.1: MINIMUM REAR YARD

Zone s	Minimum Rear Yard
RA-1	20 ft.
RA-2	A distance equal to 4 in. per 1 ft. of principal building height, but not less than 15 ft. min.
RA-3	A distance equal to 4 in. per 1 ft. of principal building height but not less than 15 ft. min.
RA-4	A distance equal to 4 in. per 1 ft. of principal building height but not less than 15 ft. min.
RA-5	A distance equal to 3 in. per 1 ft. of principal building height but not less than 12 ft. min.

207.2 In the case of a lot proposed to be used by a public recreation and community center or public library where a rear lot line abuts or adjoins a public open space, recreation area, or reservation, no rear yard shall be required.

207.3 In the case of a building existing on or before May 12, 1958, an extension or addition may be made to the building into the required rear yard; provided, that the extension or addition shall be limited to that portion of the rear yard included in the building area on May 12, 1958.

SOURCE: Final Rulemaking published at 70 DCR 011297 (August 25, 2023).