The National Association of REALTORS (NAR) is the largest trade association in the United States, representing roughly one million members across residential and commercial real estate.
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Updated
Aug 4, 2026
The National Association of REALTORS (NAR) is the largest trade association in the United States, representing roughly one million members across residential and commercial real estate.
RESO, the Real Estate Standards Organization, is the United States industry body that writes and certifies the machine-readable contract for residential real estate data. It publishes the RESO Data Dictionary (the field, enumeration and lookup vocabulary) and the RESO Web API (an OData 4.0/4.01 profile, Web API Core 2.0.0 ratified Jan 2021 and…
Propertymark is the United Kingdom's largest professional body for property agents, formed in 2017 from the merger of the National Association of Estate Agents (NAEA), the Association of Residential Letting Agents (ARLA), the Institute of Commercial and Business Agents (ICBA) and the National Association of Valuers and Auctioneers (NAVA), and…
The Real Estate Institute of Australia (REIA), founded in 1924 and based in Canberra, is the national federation of the eight state and territory Real Estate Institutes (REINSW, REIV, REIQ, REIWA, REISA, REIT, REIACT, REINT), which between them represent roughly 85% of Australian real estate businesses and agents.
The Canadian Real Estate Association (CREA) is the national industry body for Canadian residential real estate, representing roughly 160,000 REALTORS through some 60 member boards and associations, owning the MLS and REALTOR trademarks in Canada, and operating REALTOR.ca - the country's single national consumer listing portal.
RICS, the Royal Institution of Chartered Surveyors, is the British royal-chartered professional body founded in London in 1868 that qualifies, regulates and sets standards for surveyors, valuers and built-environment professionals worldwide, with the United Kingdom as its home market.
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