The foundation, exterior walls, and exterior roof shall be substantially water-tight and protected against rodents and shall be kept in sound condition and repair. The foundation elements shall support the building at all points. Every exterior wall shall be free of deterioration, holes, breaks, loose or rotting board or timbers, and any other condition which might admit rain or dampness to the interior portions of the walls or to the exterior spaces of the dwelling. The roof, which shall contain a maximum of two layers shall be tight and have no defects which admit rain or moisture, and roof drainage shall be adequate to prevent rain water from causing dampness in the walls. All trim shall be kept in good repair and free from cracks and defects which make them hazardous and dangerous. Every exterior structure shall have the address number placed on the principle structure in letters and numbers that are at least four inches by one-half inch and are visible from the curb.
(Prior Code, § 157.012)