Every owner or lessee of an unoccupied building or of any vacant lot located in residential, commercial or industrial zones or areas, shall keep such building and ground, or such vacant lot including any area between the property line and the road, in a sanitary condition, free from all rubbish, garbage, waste and filth of any kind. All weeds and grass on such premises, including any area between the property line and the road, shall be maintained so as to avoid harborage or breeding places for rodents.

SOURCE: GC § 9670.1.