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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
Chester, VA

52,875 sq. ft.

Clifford Porter, SIOR, CCIM, Porter Realty Company Inc.
Porter Realty Company Inc.
Richmond, VA
Daniel DeRegibus, SIOR, Thalhimer
Thalhimer
Glen Allen, VA
Office Lease
$5,203,300
USD Sale Seattle, WA

754,011 sq. ft.

Phillip Breidenbach, SIOR, Colliers
Colliers
Phoenix, AZ
David Rothrock, SIOR, CCIM, Meriwether Advisors
Meriwether Advisors
Seattle, WA
Matt Brennan, SIOR, Meriwether Advisors
Meriwether Advisors
Seattle, WA
Industrial Lease
$509,346
USD Sale Henderson, NV

19,750 sq. ft.

Kevin Higgins, SIOR, CBRE
CBRE
Las Vegas, NV
Garrett Toft, SIOR, CBRE
CBRE
Las Vegas, NV
Sean Zaher, SIOR, CBRE
CBRE
Las Vegas, NV
Jake Higgins, SIOR, CBRE
CBRE
Las Vegas, NV
Industrial Lease
$49,000,000
USD Sale McCook, IL

997,000 sq. ft.

David Bercu, SIOR, Colliers
Colliers
Rosemont, IL
Land Sale
CAD2,900,000
CAD Sale Montreal, QC

11,779 sq ft.

Jacob Cowles, SIOR, Landmark Advisory Services
Landmark Advisory Services
Canada
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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