Every permit issued by the city shall expire by limitation and become invalid unless the work on the site authorized by such permit is commenced within one hundred eighty (180) days after its issuance, or if the work authorized on the site by such permit is suspended or abandoned for a period of one hundred eighty (180) days after the time the work is commenced. The building official is authorized to grant, in writing, one or more extensions of time, for periods not more than one hundred eighty (180) days each. Any extension shall be requested in writing prior to the expiration of the permit and justifiable cause demonstrated. After expiration of a permit, a new permit must be obtained prior to recommencing work. (Ord. 2007-16, 3-6-2007)