A. Painting, repainting, cleaning, repairing, and other normal maintenance unless structural or electrical changes are made;

B. Real estate signs six square feet or less;

C. Temporary signs and decorations customary for special holidays erected on private property;

D. Incidental signs nine square feet or less; provided, that said size limitation shall not apply to signs providing directions, warnings or information when established and maintained by a public agency;

E. Temporary paper signs in windows; permits shall, however, be required for temporary window signs if they exceed fifty percent of the window area and are present for more than thirty days;

F. Religious symbols;

G. Political signs less than sixteen square feet;

H. Temporary building signs limited to two per project denoting the architect, engineer, contractor or developer not exceeding thirty-two square feet for the first sign and twelve square feet for the second;

I. Plaques, tablets or inscriptions indicating the name of a building, date of erection, or other commemorative information, which are an integral part of the building structure or are attached flat to the face of the building, which are nonilluminated, and which do not exceed four square feet in surface area;

J. Bulletin boards not over twelve square feet in area for each public, charitable or religious institution when same is located on premises of the institution;

K. Signs required by law, traffic or pedestrian control signs, signs indicating scenic or historic points of interest, which are erected by or on the order of a public officer in the performance of his public duty;

L. Sculptures, fountains, mosaics and design features which do not incorporate advertising or identification;

M. The flag of a government or noncommercial institutions such as schools;

N. Official public notices, official court notices;

O. Temporary signs eight square feet or less in area which are displayed for less than thirty days;

P. Structures or improvements intended for a separate use, such as phone booths, charitable donation containers, and recycling boxes;

Q. Signs on private property which are required by any law or ordinance. (Ord. 817 § 2, 1996).