Prior to commencing any work pertaining to the erection, construction, reconstruction, moving, conversion, alteration or addition to any building or structure within this zone, all building and site plans shall be subject to review by the Building Division of the Planning Department of the City and permits shall be secured from the Chief Building Official of the City of Anaheim in compliance with all provisions of Section 18.90.110 (Development Review and Permits); provided further that where there are existing buildings and structures on a site for which more intensive development is proposed under the provisions of this zone, no building permit shall be issued until the Chief Building Official and the Fire Chief have certified that the existing buildings and structures are safe for occupancy and for human habitation. (Ord. 5254 § 1 (part); September 10, 1991: Ord. 5920 § 1 (part); June 8, 2004: Ord. 5994 § 1 (part); September 27, 2005.)