Cal. Bus. & Prof. Code § 5225

The verb, “to place” and any of its variants, as applied to advertising displays, includes the maintaining and the erecting, constructing, posting, painting, printing, tacking, nailing, gluing, sticking, carving or otherwise fastening, affixing or making visible any advertising display on or to the ground or any tree, bush, rock, fence, post, wall, building, structure or thing. It does not include any of the foregoing activities when performed incident to the change of an advertising message or customary maintenance of the advertising display.