All work covered by a permit issued under this subtitle shall be completed within 30 days from the date shown on the permit. City Code, 1927, art. 45, §184 1950, art. 35, §100 1966, art. 26, §103 1976/83, art. 26, §108 Ord. 12-154 Ord. 46-396 Ord. 76-139 Ord. 15-435