Nothing contained herein shall require any change in plans, construction or designated use of buildings for which a building permit has been issued; and
(a) The construction of which has begun within ninety days of the date of such permit;
(b) The ground story framework, including the second tier of beams have been completed within one year of the date of such permit;
(c) The entire building has been completed according to such plans as filed within three years from the date of passage of this Zoning Code (January 20, 1975).
(Ord. C79-74. Passed 1-20-75.)