D.C. Mun. Regs. tit. 25-E, § 606
606.1 Licensees shall provide notice to the Department of intent to operate a barber, cosmetology, or personal grooming facility at least thirty (30) calendar days before beginning operations.
606.2 Licensees shall provide notice to the Department of intent to shut down permanently. A facility license and certificate of occupancy shall be returned to the Department and the licensee shall be required to submit a new application for the issuance of a new license prior to reopening.
606.3 Licensees shall notify the Department at least thirty (30) calendar days in advance of intent to close temporarily.
SOURCE: Final Rulemaking published at 68 DCR 013026 (December 10, 2021).