Statutes, codes, and regulations
District Of Columbia Administrative Code
Title 11 - ZONING REGULATIONS OF 2016Subtitle C - GENERAL RULES
Chapter 15 - PENTHOUSES
Rule 11-C1505 - ENCLOSED AREA

D.C. Mun. Regs. tit. 11, r. 11-C1505

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Current through Register Vol. 71, No. 49, December 6, 2024
Rule 11-C1505 - ENCLOSED AREA
1505.1

For the purposes of calculating floor area ratio for the building, the aggregate square footage of all levels or stories of a penthouse measuring six and one-half feet (6.5 ft.) or more in height shall be included in the gross floor area contributing to the total floor area ratio permitted for the building, with the following exceptions:

(a) Penthouse mechanical space;
(b) Communal recreation or amenity space for residents or non-residential tenants of the building;
(c) Penthouse habitable space, other than as exempted in paragraph (b) of this subsection, with a floor area ratio of less than four-tenths (0.4); and
(d) Mechanical equipment owned and operated by a fixed right-of-way public mass transit system.
1505.2

For any property fronting directly onto Independence Avenue, S.W. between 12th and 2nd Streets, S.W., penthouses or rooftop structures, including any combination of mechanical or habitable penthouse space, shall not exceed one-third (1/3) of the total roof area upon which the penthouse or rooftop structure sits.

1505.3

Areas within curtain walls without a roof used where needed to give the appearance of one (1) structure shall not be counted in floor area ratio but shall be computed as a penthouse to determine if they comply with Subtitle C § 1505.2.

D.C. Mun. Regs. tit. 11, r. 11-C1505

Final Rulemaking published at 63 DCR 2447 (9/6/2016); amended by Final Rulemaking published at 66 DCR 13705 (10/18/2019); amended by Final Rulemaking published at 68 DCR 7216 (7/23/2021); amended by Final Rulemaking published at 68 DCR 13834 (12/24/2021)