Each permit issued under this part expires on the April 30 after its issuance. A permit issued under this part may be renewed annually on application and payment of the required fee. If the renewal fee for a permit is not paid by July 1 of a permit year, the Administration may charge a $5 late fee for the permit. If the renewal fee for a permit is not paid by October 1 of a permit year, the Administration may remove the outdoor sign for which the fee is not paid, as provided in Part VI of this subtitle.