Section 47-2853.66 - Offices; rules(a) Each professional design firm shall be under the responsible charge of at least one member who holds a valid license as an architect, interior designer, or landscape architect issued by the Mayor and who shall serve in that capacity at one office only.(b) The Mayor, pursuant to [[subchapter I of Chapter 5 of Title 2]], shall issue rules to prescribe the licensure application procedures.Apr. 7, 2017, D.C. Law 21-249, § 2(f), 64 DCR 1629.