D.C. Mun. Regs. tit. 25, r. 25-I301
The Department is authorized to inspect public outdoor spaces and private properties as specified in these regulations.
A property owner or his agent or representative and the lessee or occupant of any such vessel, premises, grounds, structure, or building, or part thereof, and every person having the care and management thereof shall provide a Department representative access to any building or premises during hours of operation or other reasonable times as determined by the Department, to conduct inspections identified in Sections 200, 201, and 202 of these regulations. The Department representative shall present the property owner with official credentials and state the purpose of their visit.
If the property owner or his agent or representative and the lessee or occupant of any such vessel, premises, grounds, structure, or building, or part thereof, and every person having the care and management thereof refuses to allow the Department entry during normal business hours or at other reasonable times, the Department may impose special assessments, fines, and penalties as specified in Sections 304, 305, and 306 of these regulations against the property.
D.C. Mun. Regs. tit. 25, r. 25-I301