D.C. Mun. Regs. tit. 11, r. 11-359
Health care facilities for sixteen (16) to three hundred (300) persons not including resident supervisors or staff and their families, shall be permitted as special exceptions in an R-5 District if approved by the Board of Zoning Adjustment under § 3104, subject to the provisions of this section.
The applicant shall meet the standards and requirements set forth in §§ 358.2 through 358.7.
The Board may approve a facility for more than three hundred (300) persons, not including resident supervisors or staff and their families, only if the Board finds that the program goals and objectives of the District of Columbia cannot be achieved by a facility of a smaller size at the subject location and if there is no other reasonable alternative to meet the program needs of that area of the District.
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, the State Historic Preservation Officer.
D.C. Mun. Regs. tit. 11, r. 11-359