Professional Summary

Gary Mabray has over 45 years of experience in commercial real estate in Houston and the Gulf Coast region.  As an industrial real estate professional he has particular expertise in warehouse, rail served properties, fabrication facilities, and ship channel sites.  He began his sales career with Texas Industries, selling construction materials, before joining his father, Tom C. Mabray, in the family commercial real estate brokerage business.  During his career, Mr. Mabray has represented a broad range of public and private corporate clients in both industrial and office transactions.

While at Colliers International, he has consistently ranked among the company’s top producing brokers, receiving the Top Producer and Deal of the Year Award and ranking as a Top 10 Producer numerous times over the last ten years.


  • SIOR, Houston/Gulf Coast Chapter – Past President
  • Texas Association of Realtors – Past Regional Vice-President
  • Houston Association of Realtors – Past President
  • Houston Association of Realtors – Realtor of the Year
  • Heavy Hitter Award, Houston Business Journal
  • Deal of the Year Award, Colliers International U.S.A.
  • Top Producer Award, Colliers International – Houston
  • Diamond Achiever Award – Colliers International Houston
  • NAIOP Industrial Deal of the Year 


  • BBA in Industrial Management, Texas Tech University

Memberships & Involvements

  • SIOR
  • Houston Association of Realtors (HAR)
  • Colliers Energy Group Member


Distribution Centres, Land Sales, Project Leasing, Warehouses
Service Lines
Landlord Representation, Tenant Representation, Occupier Services
Property Types
Industrial, Land
Energy Group

My Team

My Team

Featured Research
Jan 23, 2020
Q4 2019 | Houston Industrial Market Report
Houston’s industrial market expansion continues with the addition of 13M SF of new inventory in 2019
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Jan 13, 2020
Q4 2019 | Houston Office Market Report
If you asked most experts if Houston’s stagnant office market is a result of supply or demand, most would say demand, due to five years of lower oil prices. Looking at the numbers over the past five years, and trying to determine whether Houston office market woes have been more supply or demand-driven, most would be...
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Oct 25, 2019
Q3 2019 | Houston Industrial Market Report
Houston’s industrial market expansion continues with the addition of 13M SF of new inventory this year
Read More
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Featured News
Jan 30, 2020
Colliers International announces three new leases totaling 136,626 square feet at Port Crossing Commerce Center in La Porte, Texas
Colliers International is pleased to announce three new leases in Port Crossing Commerce Center in La Porte, Texas.
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Dec 6, 2019
Growing company, Aztec/Shaffer, turns to Houston as their primary home
Aztec/Shaffer, LLC, whose two divisions are comprised of Aztec Events & Tents and Shaffer Sports & Events, renews and signs new leases totaling 250,697 square feet in Houston, Texas.
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Dec 1, 2019
Colliers International | Houston named one of Houston's Top Workplaces and Best Places to Work
Colliers International | Houston is pleased to announce that it has been ranked in the top twenty among Best Places to Work (medium-sized companies) by the Houston Business Journal and has earned another spot as Top Workplace for the 9th consecutive year by the Houston Chronicle.
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May 13, 2019
Houston's Top Commercial Real Estate Brokers
Colliers International, an industry-leading global real estate services company with more than 14,000 skilled professionals operating in 68 countries, is excited to announce the nine advisors named Heavy Hitters by the Houston Business Journal.
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