D.C. Mun. Regs. tit. 11, r. 11-221
Use as a youth rehabilitation home, adult rehabilitation home, or substance abusers' home for one (1) to eight (8) persons, not including resident supervisors or staff and their families, shall be permitted as a special exception in an R-1 District if approved by the Board of Zoning Adjustment under § 3104, subject to the provisions of this section.
There shall be no other property containing a community-based residential facility for seven (7) or more persons either in the same square or within a radius of one thousand feet (1,000 ft.) from any portion of the subject property.
There shall be adequate, appropriately located, and screened off-street parking to provide for the needs of occupants, employees, and visitors to the facility.
The proposed facility shall meet all applicable code and licensing requirements.
The facility shall not have an adverse impact on the neighborhood because of traffic, noise, operations, or the number of similar facilities in the area.
The Board may approve more than one (1) community-based residential facility in a square or within one thousand feet (1,000 ft.) only when the Board finds that the cumulative effect of the facilities will not have an adverse impact on the neighborhood because of traffic, noise, or operations.
The Board shall not approve more than one (1) youth rehabilitation home, adult rehabilitation home, or substance abusers' home in a square or within one thousand feet (1,000 ft.) of each other.
The Board shall submit the application to the D.C. Office of Planning for coordination, review, report, and impact assessment, along with reports in writing of all relevant District departments and agencies, including but not limited to the Departments of Transportation, Human Services, and Corrections and, if a historic district or historic landmark is involved, to the State Historic Preservation Officer.
D.C. Mun. Regs. tit. 11, r. 11-221