Nothing in this chapter shall be deemed to require any change in the plans, construction or designated use of any building upon which actual construction was lawfully begun prior to the adoption of this chapter and upon which building actual construction has been diligently carried on, and provided further that such building shall be completed within one year from the date of passage and publication of this chapter.
('71 Code, § 11-4-9) (Ord. 1413, passed 9-13-60)