Nothing contained in this Zoning Code shall require any change in the plans, constitution or designated use of a building for which a building permit has been heretofore issued and the construction of which has been diligently prosecuted within 90 days of the date of such permit, and which entire building shall be completed according to such plans, as filed, within two years from the date of the passage of this Zoning Code (Ordinance 46-68, passed February 3, 1969). Nothing in this Zoning Code shall prevent the restoration of a building wholly or partly destroyed by fire, explosion, act of God or act of a public enemy subsequent to the passage of this Zoning Code. Nothing in this Zoning Code shall prevent the restoration of a wall declared unsafe by the Building Commissioner.
(Ord. 46-68, passed 2-3-1969)