D.C. Mun. Regs. tit. 11 § C1501

Current through Register Vol. 70, No. 17, April 26, 2024

Rule 11-C1501 - USES

1501.1

A penthouse or rooftop structure may house mechanical equipment, or any use permitted within the zone, except that penthouse space shall be restricted as follows:

(a) Within residential zones in which the building is limited to thirty-five feet (35 ft.) or forty feet (40 ft.) maximum, the penthouse use shall be limited to penthouse mechanical space and ancillary space associated with a rooftop deck, to a maximum area of twenty percent (20%) of the building roof area dedicated to rooftop unenclosed and uncovered deck, terrace, or recreation space;

(b) Penthouse habitable space shall only be permitted on the roof of a single household dwelling or flat in any zone, or on the roof of an apartment house converted pursuant to Subtitle U § 320.2, if it:

(1) Is not located on an alley lot;

(2) Is located entirely within the matter of right permitted height for the building;

(3) Is a maximum of nine feet (9 ft.) in height and one (1) story; and

(4) Contains only stair or elevator access to the roof plus a maximum of thirty square feet (30 sq. ft.) of space ancillary to a rooftop deck or terrace;

(c) Penthouse habitable space that satisfies the requirements of paragraph (b) of this subsection except that it would be partially or entirely above the matter-of-right permitted height for the building shall only be permitted if approved by the Board of Zoning Adjustment as a special exception under Subtitle X, Chapter 9;

(d) An eating and drinking establishment located within a penthouse habitable space, or on a rooftop deck on the highest roof of the building, shall only be permitted if approved by the Board of Zoning Adjustment as a special exception under Subtitle X, Chapter 9; or

(e) On any building within an area bound by I Street, N.W., to the north; Constitution Avenue, N.W., to the south; 19^th Street, N.W., to the west, and 13^th Street, N.W., to the east, penthouse habitable space or publicly accessible rooftop deck on the highest roof of the building, shall be permitted only if approved by the Board of Zoning Adjustment as a special exception under Subtitle X, Chapter 9, after consultation with the US Secret Service to determine whether security concerns exist.

D.C. Mun. Regs. Tit. 11, § C1501

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 13834 (12/24/2021)