The following signs are allowed in nonresidential districts:
A. Real Estate: Temporary signs not exceeding twelve (12) square feet in area advertising the sale or lease of real property when located on the property to which the sign refers and when not located closer than ten feet (10') to a lot line, which sign shall be removed within ten (10) days of the sale or lease of the property.
B. Future Use Or Development: Temporary ground signs advertising future use or development of property on which such signs are located may be maintained subject to provisions of this section, provided such signs do not exceed two hundred fifty (250) square feet in area or remain longer than six (6) months. "For Rent" and "For Lease" signs in commercial and industrial districts for new buildings shall not exceed forty eight (48) square feet in area or remain more than ninety (90) days after the building is completed and when located not closer than ten feet (10') to a lot line.
C. Church Or Public Building: Church or public building bulletin boards not exceeding twelve (12) square feet in area. (1997 Code)