D.C. Mun. Regs. tit. 11, r. 11-333
Storage of wares and goods, parking lot, parking garage, or public storage garage not otherwise permitted under this chapter, on an alley lot so recorded on the records of the Surveyor, District of Columbia, or recorded on the records of the D.C. Office of Tax and Revenue, on or before November 1, 1957, shall be permitted as a special exception in an R-4 District if approved by the Board of Zoning Adjustment under § 3104, subject to the provisions of this section.
No storage use authorized in this section shall be located in a building containing more than twenty-five hundred square feet (2,500 ft2) of gross floor area.
Any use authorized in this section shall not be likely to become objectionable because of noise, traffic, or number of employees.
The alley upon which the use is to be located shall be readily negotiable by any trucking necessary for the proposed operation.
The hours of active operation shall be arranged so as not to prove disturbing or otherwise objectionable to persons residing around the perimeter of the square in which located.
D.C. Mun. Regs. tit. 11, r. 11-333