Georgia Code Title 16. Crimes and Offenses § 16-7-58

(1) On any public property or building, unless the owner thereof or the occupier as authorized by such owner has given permission to place such posters, signs, or advertisements on such property; provided, however, that signs within the rights of way of public roads shall be governed by Code Section 32-6-51;

(2) On any private property unless the owner thereof or the occupier as authorized by such owner has given permission to place such posters, signs, or advertisements on such property; and, provided, further that no municipal, county, or consolidated government may restrict by regulation or other means the length of time a political campaign sign may be displayed or the number of signs which may be displayed on private property for which permission has been granted; or

(3) On any property zoned for commercial or industrial uses if the placement of such posters, signs, or advertisements conflicts with any zoning laws or ordinances.