The Society of Industrial and Office REALTORS® is a leading professional commercial and industrial real estate association.

SIOR represents today's most knowledgeable, experienced, and successful commercial real estate brokerage specialists. The 'SIOR Network' includes more than 3,100 members in 480 cities in 20 countries on six continents. SIOR has certified almost 2,500 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.

Commercial real estate professionals who hold the SIOR designation, are recognized by corporate executives, commercial brokers, agents, lenders, and other real estate professionals as the most experienced and capable brokerage practitioners in any market. Designees specialize in industrial, office, sales manager, executive manager, or advisory services categories.

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