thirty days written notice on a form provided by the Department explaining the nature of the onetime charge. (Amended by Ord. No. 154,237, Eff. 8/30/80, Oper. 9/1/80.) E. For a rental unit for which a registration or registration renewal fee has been paid pursuant to Subdivision 4. of Subsection B. of this section, the landlord, for the month of June, 1982, and on a one-time basis only may demand and collect a total of four dollars per rental unit from the tenant of the rental unit after serving the tenant with a thirty days written notice on a form provided by the Department explaining the nature of the one-time charge. (Added by Ord. No. 155,561, Eff. 8/9/81.) F. For a rental unit for which the registration or annual registration renewal fee has been paid pursuant to Subdivision 5. of Subsection B. of this section, the landlord may demand and collect a rental surcharge of 50% of the annual registration fee from the tenant of the rental unit after serving the tenant with a notice as described in Civil Code Section 827 and given in the manner prescribed by Code of Civil Procedure Section 1162. (Amended by Ord. No. 184,822, Eff. 4/30/17.) The rental surcharge may only be collected in August of the year in which the registration or annual registration fee became due and payable, provided that the landlord is not delinquent in the payment of the registration or annual registration renewal fee. Except that, during the 1997 registration cycle, the tenant surcharge may be collected during any month prior to December 31, 1997 subject to the notification requirement described above and provided that the landlord is not delinquent in the payment of the registration or annual registration renewal fee. (Amended by Ord. No. 184,529, Eff. 10/4/16.) Effective January 1, 2020, and in all subsequent years, a landlord who has timely paid all annual registration or annual registration renewal fees and completed the rent registry for the given year may collect one-twelfth of 50% of the annual registration or annual registration renewal fee paid pursuant to Subdivision 5. of Subsection B. of this section from the tenant of the rental unit per month, after serving the tenant with a 30-day written notice as described in Civil Code Section 827, which shall be served in the manner prescribed by Code of Civil Procedure Section 1162. (Added by Ord. No. 186,448, Eff.