The approval of the preliminary plat is effective for a period of five years, at or before the end of which time final plat application must be submitted to the city council for approval. Any subdivision not submitted for final plat approval within the period of time set forth in this subsection is null and void, and the applicant is required to resubmit a new preliminary plat for approval, subject to all then-current zoning and subdivision regulations. If an applicant files a written request with the city at least thirty days prior to the expiration of this five-year period, the city council may grant a one-year extension upon showing that the applicant has attempted, in good faith, to submit the final plat within the five-year period and that there is a reasonable likelihood of completing the required plat improvements within the one-year extension period. (Ord. 1190-21 § 2 (Exh. A), 2021; Ord. 1016-08 § 2).