D.C. Mun. Regs. tit. 17, r. 17-4005
The Director shall send a renewal application to a holder of a license, certificate, or registration by first class mail to the holder's address on file with the Director at least sixty (60) days prior to the expiration of the license, certificate, or registration.
To be eligible for renewal, the holder of a license, certificate, or registration shall meet all of the requirements for renewal under this subtitle and the Act.
A holder of a license, certificate, or registration shall notify the Department in writing of any change of home or business address within thirty (30) days of the change of address.
The failure of a holder of a license, certificate, or registration to receive the notice required by § 4005.1 does not relieve the holder of the responsibility of renewing the license, certificate, or registration.
A holder of a license, certificate, or registration who fails to renew prior to the expiration date may renew the license, certificate, or registration within sixty (60) days after expiration upon paying the required late fee. Upon renewal, the holder shall be deemed to have possessed a valid license, certificate, or registration during the period between the expiration of the license, certificate, or registration and the renewal thereof.
If a holder of a license, certificate, or registration fails to renew the license, certificate, or registration within sixty (60) days after the expiration, the license, certificate, or registration shall be considered to have lapsed on the date of expiration, and the holder shall be required to apply for reinstatement and pay the required reinstatement fee, in accordance with the applicable provisions of this subtitle and the Act.
D.C. Mun. Regs. tit. 17, r. 17-4005