No building, structure or land shall be used or occupied, and no building or structure or part thereof shall be erected, constructed, reconstructed, moved, enlarged or structurally altered, unless in conformity with the regulations of the Zoning Ordinance. However the Zoning Ordinance shall not require any change to any building, structure or use legally existing at the effective date of the Zoning Ordinance; or to any building, structure or use planned and construction started in compliance with existing laws prior to the effective date of the Zoning Ordinance, and completed within one year period after the effective date of the Zoning Ordinance, except as provided in Section 1377.01.
(12-17-79.)