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Thomas Gentner | Colliers | Columbia MD

Thomas Gentner


Executive Vice President

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Professional Summary

Tom Gentner specializes in commercial and industrial leasing and sales in the state of Maryland. Starting in 1989, his industry experience ranges from property representation for disposition or investment to buyer/tenant representation for acquisition or relocation. 

Tom joined Colliers International after spending 27 years at Transwestern and 5 years with the Baltimore brokerage firm Casey & Associates. During his career in commercial real estate, he has sold over 500 acres of land and leased or sold more than 45 million square feet of commercial and industrial space in the greater Baltimore metropolitan area worth an aggregate value of over $2.5 billion.


  • CoStar Baltimore Power Broker every year since award inception in 2005
  •  Baltimore Business Journal #1 Top Commercial Real Estate Agent (2006)
  • Baltimore Business Journal #2 Top Commercial Real Estate Agent (2001, 2003, 2008)
  • CoStar Top 20 Brokers in Baltimore
  • Casey & Associates “Rookie of the Year” (1990)


MBA, Loyola University Maryland

BBA, Washington & Lee University

Memberships & Involvements

  • National Association of Industrial and Office Properties (NAIOP) 
  • BWI Business Partnership 
  • Building Owners and Managers Association (BOMA) 
  • International Development Research Council (IDRC) 


Service Lines

Tenant Representation, Landlord Representation

Property Type

Industrial, Healthcare, Land, Office

My Team

Featured Research

Jan 17, 2023

Q4 2022 Maryland Industrial Report

Tenant activity in the Baltimore market remained robust despite economic headwinds starting to affect the market. Amazon and Lowes both signed at Harbor Logistics in Baltimore City for 241,963 and 104,647 square feet respectively in two of the largest deals of the quarter.
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Oct 25, 2022

Q3 2022 Maryland Industrial Report

Demand continued to be positive for the ninth consecutive quarter.
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Jul 26, 2022

Q2 2022 Maryland Industrial Report

Construction activity in the Maryland industrial market picked up as vacancy rates continued to fall.
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Featured News

May 18, 2022

Colliers Facilitates Sale of 46 Acre Industrial Property in Hagerstown

Firm Also Appointed as Leasing Agent for Planned 210,000-Square-Foot Industrial Building
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