The Society of Industrial and Office Realtors (SIOR) is an international professional commercial and industrial real estate association based in Washington, D.C. It offers a professional designation (SIOR) to commercial brokers and other industry professionals. It has 3,400 members in 686 cities and 36 countries.[1] SIOR designees can hold the following specialty designations: industrial, office, sales manager, executive manager, or advisory service. SIOR also includes associate members, who are corporate executives, developers, educators, and others involved in the commercial real estate industry.
SIOR was originally SIR (Society of Industrial Realtors). In 1939, the idea of forming an organization for industrial real estate brokers began. The sequence of events can be summarized as follows:
One year and two months later, the US entered World War II.
The society was instrumental in locating existing, and immediately available, plant space that could be used to produce defense, and later, war material. Over 200 brokers from across the United States and Canada surveyed suitable facilities and reported their findings to the War Department (now the Department of Defense).[2]
SIOR maintains the SIOR Commercial Real Estate Index (CREI) is a quarterly, attitudinal survey by market experts in the SIOR membership community.
It is a diffusion index, a routinely used index for economic measures.
The survey is based on the following topics in the questionnaire:
SIOR has membership chapters on a global scale.
They are the following:[3]