SIOR - About the company
SIOR is an unfunded company based in Washington, DC (United States), founded in 1941. It operates as a Provider of real estate brokerage services for commercial properties. SIOR has not raised any funding yet. The company has 2038 active competitors, including 81 funded and 98 that have exited. Its top competitors include companies like Avison Young, My Property Box and HomeSmart.
Company Details
SIOR, the Society of Industrial and Office Realtors, is a leading commercial real estate association representing the world's top producing brokers.
- Website
- sior.com
- Social
Key Metrics
Founded Year
1941
Location
Washington, DC, United States
Stage
Unfunded
Ranked
30th among 2038 active competitors
Employee Count
119 as on Apr 30, 2026
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SIOR's funding and investors
SIOR has not raised any funding rounds yet.
SIOR's founders and board of directors
Founder? Claim ProfileSIOR's employee count trend
SIOR has 119 employees as of Apr 26. Here is SIOR's employee count trend over the years:
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SIOR's Competitors and alternates
Top competitors of SIOR include Avison Young, My Property Box and HomeSmart. Here is the list of Top 10 competitors of SIOR, ranked by Tracxn score:
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Rank | Company Details | Short Description | Total Funding | Investors | Tracxn Score |
|---|---|---|---|---|---|
1st |  Avison Young 1978, Toronto (Canada), Series C | Provider of commercial real estate services including advisory and property management | $341M | 62/100 | |
2nd | My Property Box 2012, Darlington (United Kingdom), Seed | Chains providing property sales, lettings, management, and investment services | $363K | 60/100 | |
3rd |  HomeSmart 2000, Scottsdale (United States), Acquired | Real estate agency | - | - | 56/100 |
4th |  Truss Holdings 2016, Deerfield (United States), Series A | Online full-service brokerage firm for commercial real estate | $25.3M | 55/100 | |
5th | Fathom Realty 2010, Dallas (United States), Public | Real estate agency | $1.68M | - | 53/100 |
6th | _1572411006722.png?devicePixelRatio=2&height=30&width=30){kind=logo} Black Diamond Group 2003, Calgary (Canada), Public | Rents and sells modular space solutions and workforce accommodation solutions | - | 53/100 | |
7th | Funda 1900, Amsterdam (Netherlands), Late Stage | Provider of an online listing platform for buying and selling residential properties | - | 52/100 | |
8th | RSQUARE 2009, Seoul (South Korea), Public | Online listing platform for commercial properties | $77.2M | 51/100 | |
9th | Engel & Vlkers Bayreuth 1977, Germany, Acquired | Network of real estate professionals providing property sales and rental services | - | 50/100 | |
10th | Raise 2016, San Francisco (United States), Series A | Online commercial real estate brokerage service provider | $31.5M | 48/100 | |
30th |  SIOR 1941, Washington, DC (United States), Unfunded | Provider of real estate brokerage services for commercial properties | - | - | 44/100 |
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SIOR's Investments and acquisitions
SIOR has made no investments or acquisitions yet.
News related to SIOR
Filter this listMedia has covered SIOR for a total of 2 events in the last 1 year, 1 of them has been about people movement.
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TMG Real Estate Advisors Principal Dan Smolensky Named SIOR Global VPrejournals.com•Jul 01, 2025•TMG Real Estate Advisors, SIOR
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SIOR Receives 2024 Power of Associations Silver Award for Member Associate ProgramPR Newswire•Jul 24, 2024•SIOR
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SIOR European Region Chapter announces new President and Executive CommitteeProperty Magazine•Jun 11, 2024•SIOR
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Director with St. Louis’ Sansone Group named treasurer of SIOR board of directorsrejournals.com•May 28, 2024•SIOR
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SIOR names EVP with Columbus’ NAI Ohio Equities as regional directorrejournals.com•May 21, 2024•SIOR
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SIOR announces latest new appointments as European expansion continuesProperty Magazine•Jun 15, 2023•SIOR, Carter Jonas
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Entre Sells 20,502-square-foot free standing buildingrejournals.com•Jun 13, 2023•Entre Commercial, SIOR
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