1135.06  APPLICATION TO EXISTING BUILDINGS.
   Nothing contained in this chapter shall require any change in the plans, construction or designation use of a building lawfully issued before the passage hereof, and construction of which is begun within thirty days of the issuance of such permit, diligently prosecuted to its completion, and specifications on which such permit was issued, within one year of the issuance of the permit.
(1978 Code Sec. 1266.05)