D.C. Mun. Regs. tit. 11, § 2603
2603.1 An inclusionary development for which the primary method of construction does not employ steel and concrete frame structure located in an R-2 through an R-5-B District or in a C-1, C-2-A, W-0 or W-1 District shall devote the greater of 10% of the gross floor area being devoted to residential use or 75% of the bonus density being utilized for inclusionary units.
2603.2 An inclusionary development of steel and concrete frame construction located in the zone districts stated in § 2603.1 or any development located in a C-2-B, C-2-C, C-3, CR, R-5-C, R-5-D, SP, USN, W-2 or W-3 Zone District shall devote the greater of eight percent (8%) of the gross floor area being devoted to residential use or fifty percent (50%) of the bonus density utilized for inclusionary units.
2603.3 Inclusionary developments located in R-3 through R-5-E, C-1, C-2-A, StE, W-0 and W-1 Districts shall set aside fifty percent (50%) of inclusionary units for eligible low-income households and fifty percent (50%) of inclusionary units for eligible moderate-income households. The first inclusionary unit and each additional odd number unit shall be set aside for low-income households.
2603.4 Developments located in CR, C-2-B through C-3-C, USN, W-2 through W-3, and SP Zone Districts shall set aside one hundred percent (100%) of inclusionary units for eligible moderate-income households.
2603.5 The Mayor or the District of Columbia Housing Authority shall have the right to purchase up to twenty-five percent (25%) of inclusionary units in a for-sale inclusionary development in accordance with such procedures as are set forth in the Act.
2603.6 Notwithstanding § 2603.5, nothing shall prohibit the Mayor or the District of Columbia Housing Authority to acquire title to inclusionary units in a for-sale inclusionary development if any of the following circumstances exist:
(a) There is a risk that title to the units will be transferred by foreclosure or deed-in-lieu of foreclosure, or that the units' mortgages will be assigned to the Secretary of the U.S. Department of Housing and Urban Development; or
(b) Title to the units has been transferred by foreclosure or deed-in-lieu of foreclosure, or the units' mortgages have been assigned to the Secretary of the U.S. Department of Housing and Urban Development.
2603.7 An inclusionary development of steel and concrete frame construction located in a StE District shall devote no less than eight percent (8%) of the gross floor area being devoted to residential use in a StE District.
SOURCE: Final Rulemaking published at 53 DCR 7020 (August 25, 2006); as amended by Final Rulemaking published at 55 DCR 2616 (March 14, 2008); as amended by Notice of Final Rulemaking published at 58 DCR 4788, 4815 (June 3, 2011); as amended by Final Rulemaking published at 60 DCR 4834 (March 29, 2013); as amended by Final Rulemaking published at 60 DCR 5144 (April 5, 2013).