Over the years the Arizona Association of REALTORS® has lobbied at the state capital to protect homeowners who's homes are within HOA's. According to Per AAR, here is a brief explanation in reference to sign laws for Arizona homeowners.
What Should I Know About Arizona’s Sign Laws? In Arizona, homeowners’ associations (HOA) are prohibited from regulating or restricting the use of “for sale,” “for rent” or “for lease” signs on a property owner’s yard as long as the sign meets statutory requirements and the Homeowners Association (HOA) does not prohibit or restrict leasing.
Those requirements are:
(1) the sign must be commercially produced;
(2) the sign cannot exceed eighteen by twenty-four inches; and
(3) the rider attached cannot exceed six by twenty-four inches.