Nothing in this Zoning Code shall be deemed to require any change in the plans, construction or designated use of a building for which a building permit was issued prior to the date of adoption of this Zoning Code and the construction of which was diligently prosecuted within thirty days of the date of such permit, and the ground story framework of which, including the second tier of beams, was completed within six months of the date of such permit, and which entire building was completed according to such plans, as filed, within two years from the date of the adoption of this Zoning Code. Nothing in this Zoning Code shall be deemed to prevent the restoration of a wall declared to be unsafe by the Director of Buildings.
(Ord. 1985-29. Passed 10-14-85; Ord. 1990-18. Passed 4-23-90.)