Who We Are
Celebrating our 80th anniversary in 2021, the SOCIETY OF INDUSTRIAL AND OFFICE REALTORS® (SIOR) is the leading global professional office and industrial real estate association. With 3,700 members in 45 countries and 722 cities, SIOR represents today's most knowledgeable, experienced, and successful commercial real estate brokerage specialists.
SIOR has certified thousands of 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, agents, lenders, and other real estate professionals as the most capable and experienced brokerage 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.
The SIOR designation stands unchallenged for excellence in the performance of real estate services, and is universally recognized as the prerequisite in the selection of a commercial real estate broker, agent, or consultant.