D.C. Mun. Regs. tit. 31, r. 31-502
Each taxicab company, association, or fleet shall maintain a bona fide administrative office in the District of Columbia.
A bona fide administrative office is an office that has a working telephone number and address listed in the name of the company, association, or fleet, standard office furniture, and at least one (1) person on site to respond to consumer calls and receive visitors, and that is open during normal business hours.
The company, association, or fleet shall maintain required business records, including but not limited to, employee, associate, fleet, and license records, at the administrative office in a secure filing system.
Each bona fide administrative office in the District of Columbia shall have a valid Certificate of Occupancy for a business; and have the name of the business prominently displayed on the outside of the site designated as their business address.
Failure to have a bona fide administrative office within the District of Columbia shall result in the revocation of the certificate of operating authority for the company, association, or fleet, if the failure is not cured within fifteen (15) business days after the date of a written notice.
If multiple taxicab companies, associations, or fleets share office space, but not ownership, each must have a separate certificate of occupancy for their business or the certificate of occupancy must reflect the name of each business operating within the office space; and each must have clearly distinguishable administrative office space that meets all of the requirements of § 502.2.
Each company, association, and fleet shall post the hours of operation of its bona fide administrative office as set forth in § 516.
Each company, association, or fleet shall prohibit the parking of taxicabs on any public street in front of, alongside, or in the rear of the bona fide administrative office as set forth in § 516.
D.C. Mun. Regs. tit. 31, r. 31-502