The following signs are excluded from the regulations and requirements of this chapter:
(a) Signs not exceeding two (2) square feet in area that are customarily associated with residential use, including address and/or name of occupants of the structure, signs on mailboxes or newspaper tubes, signs posted on property related to private parking, signs denoting security systems being used on the site, and signs warning against trespassing or danger from animals. Signs associated with home occupations and/or any non-residential use of the property shall not be excluded from these regulations.
(b) Signs erected by a governmental entity for a recognized public purpose and duly authorized by any law, statute or ordinance. Such signs include legal notices and traffic control or safety devices, provided such signs carry no supplementary advertising.
(c) Signs located on the inside of a structure or building, that are not designed or located so as to be typically visible from outside the building.
(d) Signs which are in the nature of cornerstones, commemorative tables and historic designations, provided such signs are less than nine (9) square feet in size and not illuminated.
(e) Signs clearly in the nature of decorations customarily associated with a national, local or religious holiday. Such signs shall be of any illumination or animation provided that a safety and/or visibility hazard is not clearly created.
(f) Flags or insignias of any governmental entity when not displayed as an advertising device, or in connection with any commercial promotion.