The provisions of this chapter shall govern the construction, repair, erection, alteration, location, and maintenance of privately owned outdoor signs and outdoor advertising and identification devices of every kind, together with their appurtenant and auxiliary devices. These sign regulations are found and declared to be necessary and proper to the following purposes:
1. To protect property values within the City;
2. To prevent the occurrence of urban blight and slum conditions;
3. To protect the general public from damage and injury which may be caused by the faulty and unregulated use of signs;
4. To prevent any unreasonable appropriation of the public domain, its open spaces, streets, and ways to private use;
5. To restore, preserve, and promote aesthetic character in the City.