The SOCIETY OF INDUSTRIAL AND OFFICE REALTORS® is the leading professional commercial and industrial real estate association. With more than 2,800 members in 480 cities in 20 countries, SIOR represents today’s most knowledgeable, experienced, and successful commercial real estate brokerage specialists.

SIOR has certified almost 2,300 of its members with the prestigious SIOR designation, a professional symbol of the highest level of knowledge, production, and ethics in the real estate industry. Real estate professionals who have earned the SIOR designation are recognized by corporate real estate executives, commercial real estate brokers and agents, lenders, and other real estate professionals as the most capable and experienced practitioners in any market.

A professional affiliate of the National Association of REALTORS®, SIOR is dedicated to the practice and maintenance of the highest professional and ethical standards. SIOR maintains a commitment to business and industry by providing outstanding professional services, publications, and educational programs.