(A) Nothing in this subchapter shall prevent the reconstruction, repair or restoration and the continued use of any nonconforming building or structure damaged by fire, collapse, explosion, act of God, or acts of a public enemy, subsequent to the effective date of this code; provided, however, that the cost thereof does not exceed 60% of the fair valuation of such building as determined by the Board of Review or the City Assessor, and provided further that there is no change in the size of the building.
(B) Nor shall anything in this subchapter require any change in the plans, construction or intended use of a building for which plans have been prepared heretofore and the construction of which shall have been diligently prosecuted within one month of the date of passage of this code and which has been completed within 12 months after the date of passage of this code.
(1990 Code, § 8.24)