Nothing contained in this Zoning Code shall require any change in the plans, construction, alteration or designated use of a building for which a building permit has been issued heretofore and the construction of which shall have been actually begun and diligently prosecuted within six (6) months of the date of issuance and the ground story framework of which, including the second tier of beams, shall have been completed within one year and which entire building shall have been completed according to such plans as filed within two (2) years from the date of such permit.
(Ord. 350. Passed 7-6-44.)