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SIORs are the most capable and experienced industrial and office brokerage practitioners in any market.

SIORs are the most capable and experienced industrial and office brokerage practitioners in any market.

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Access more than 4,000 industry leaders who are held to the highest standard, ensuring expertise, prestige, and trust.

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Become An SIOR

SIOR offers membership in a number of categories around the world with many rewarding benefits to your career. Discover more about our Member Associate, SIOR Designation, and Associate Membership.

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October 19-22, 2026
New York, New York
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Recent Transactions

Industrial Lease
$289,809
USD Sale South Whitley, IN

33,600 sq. ft.

Steven Zacher, SIOR, CCIM, The Zacher Company
The Zacher Company
Fort Wayne,
Joy Neuenschwander, SIOR, CPM, The Zacher Company
The Zacher Company
Fort Wayne, IN
Industrial Lease
$18,342,062
USD Sale Shafter, CA

350,000 sq. ft.

Joseph Vargas, SIOR, The Wonderful Company
The Wonderful Company
Los Angeles, CA
Industrial Lease
$1,812,863
USD Sale Thousand Oaks, CA

37,218 sq. ft.

John DeGrinis, SIOR, Newmark
Newmark
Calabasas, CA
Patrick DuRoss, SIOR, Newmark
Newmark
Calabasas, CA
Jeff Abraham, SIOR, Newmark
Newmark
Calabasas, CA
Other Lease
$1,950,000
USD Sale Queens, NY

4,750 sq. ft.

William O
M.C. O'Brien, Inc.
Brooklyn, NY
Office Sale
CAD995,000
CAD Sale Winnipeg, MB

7,200 sq. ft.

These transactions are just some of the 80,000 deals completed by SIORs every year.
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Global Industry Partner Program

The SIOR Global Industry Partner Program establishes synergistic relationships between SIOR and a highly select number of industry, for-profit companies to address key commercial real estate issues, align on common interest, and drive positive change across the industry.

Current Global Industry Partners:

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