Yes. TREC may suspend or revoke a license if the license holder places a sign on a property offering it for lease or rental without the written permission of the owner or the owner's authorized agent. [TRELA §1101.652(b)(18)]. Also, although TREC does not regulate where a license holder places a sign, a license holder is responsible for compliance with any rules, restrictions, or regulations covering placement of a sign in their local area. Placement of signs in violation of city ordinance could be considered an act of negligence or incompetence that authorizes disciplinary action against the license holder as well as subject the license holder and possibly even their principal to enforcement actions by the appropriate authorities. [TRELA §1101.652(b)(1)] Typically, sign ordinances prohibit placing a sign on a utility pole, traffic signal box, or in a road median.