No permit for erection, alteration, restoration, demolition or move shall be approved for any sites, buildings, structures or objects being considered for designation as historic properties, landmarks or districts subsequent to the day request for such designation is received by the commission; provided, however, that after ninety (90) days have elapsed from the date of initiation of such designation for properties and landmarks, and one hundred fifty (150) days from the date of initiation of such designation for districts, if final action on such designation has not been completed, the permit application may be approved. (Ord. 157, 10-24-1989; amd. Ord. 391, 5-8-2001)