No order for a use variation permitting the erection or alteration of a building shall be valid for a period longer than one year unless such use is established within such period; however, where such permitted use is dependent upon the erection or alteration of a building, such order shall continue in force and effect if a permit for the erection or alteration is obtained within such period and the erection or alteration is started and proceeds to completion in accordance with the terms of such permit.
(Ord. 10-16-67. Passed 11-20-67. )