The National Association of Realtors is the largest trade association in the United States, representing professionals across residential and commercial real estate. Founded in 1908 as the National Association of Real Estate Exchanges, the organization adopted its current name in 1972. NAR operates as a nonprofit entity and is privately held. It advocates for property rights, sets professional standards through its Code of Ethics, and provides education and research resources to its members. The association also influences industry policy and offers market data analysis. NAR’s membership exceeds 1.5 million individuals affiliated with local and state boards nationwide. Its headquarters is located in Chicago, with an additional office in Washington, D.C.