A variance once granted shall not be withdrawn or changed unless there is a change of circumstances, or if, after the expiration of one year, no substantial construction is done in accordance with the plans for which such variance was granted. Should the latter be the case, the variance shall be deemed null and void, and all regulations governing such premises in question shall revert to those in effect before the variance was granted.
(Ord. 67-17. Passed 5-15-67.)