Except as provided in Section 1367.05, the proposed occupant of a structure requiring a certificate of business occupancy shall apply for such certificate of business occupancy for the calendar year 1973 by March 1, 1973, upon forms provided by the Building Commissioner, if such structure is proposed to be occupied or will be available for occupancy by April 1, 1973. The proposed occupant of a structure to be used for business purposes, which will be completed and available for occupancy subsequent to April 1, 1973, and which requires a certificate of business occupancy under the terms of this Business Maintenance Code, shall apply for such certificate as soon as practicable, but in no event shall any unit of the structure be occupied in whole or in part until such certificate has been issued.
For each calendar year after 1973, the person applying for a required certificate of business occupancy for any unit for business purposes shall apply for such certificate on or before December 1 of the year preceding the period for which the certificate is issued.