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Professional Summary

Walker focuses primarily on industrial real estate sale and lease transactions involving warehouses, manufacturing facilities and land in the greater Houston area. He was named Principal in 2010, and was elected as a Director in 2013. He serves on the firm’s Governance Committee. He also leads the industrial division of the firm, a group comprised of 28 industrial real estate specialists. He has demonstrated consistent leadership in revenue production and has been recognized as a regular top ten performer in Houston. Walker has also achieved revenue performance in the top 10% of all Colliers offices worldwide.

Prior to joining Colliers, he graduated from the Jesse H. Jones Graduate School of Management at Rice University in 2002. While earning an MBA, he worked for FedEx in Hong Kong. Prior to graduate school, Mr. Barnett served for four years on the legislative staff of United States Senator Bill Frist in Washington, DC. 

He graduated from Vanderbilt University in 1996.


  • “Power Broker” award for leasing transaction volume in previous years
  • CRE Industrial Heavy Hitter Houston Business Journal (2016, 2019)
  • CRE Office Landlord Rep Heavy Hitter Houston Business Journal (2014)
  • Colliers' Top 10 Producer (2008 - 2011, 2013, 2015, 2018 - 2019)
  • Colliers' Titan Award (2007 - 2008, 2010 - 2011, 2013 - 2016, 2018 - 2020)
  • Colliers' Everest Club (2013)
  • National Association of Industrial and Office Properties (NAIOP)  Industrial Rising Star Award Recipient (2007)


  • Real Estate Sales Agent's License, Texas
  • MBA, Rice University
  • Vanderbilt University

Memberships & Involvements

  • Society of Industrial and Office Realtors (SIOR)
  • Houston Gulf/Coast SIOR Board (2016 President)
  • The Women’s Home Board of Directors
  • Afton Oaks Civic Club President
  • Grand Mission Municipal Utility District #2 Elected Director
  • St. Michael Catholic Church



Design and Build, Distribution Centres, Financial Analysis, Investment Properties, Land Marketing, Land Sales, Lease Advisory, Project Leasing, Warehouses

Service Lines

Landlord Representation, Tenant Representation, Occupier Services, Capital Markets

Property Type

Industrial, Land

My Team

Featured Research

Jul 16, 2021

Q2 2021 | Houston Industrial Market Report

Strong leasing activity in Q2 mirrors a more optimistic outlook on the economy and overall recovery from the COVID crisis. Governor Abbot issued an Executive Order in March removing all COVID-related operating limits on businesses. In addition, President Biden issued a...
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Apr 22, 2021

Q1 2021 | Houston Industrial Market Report

Industrial demand has accelerated under and after COVID with e-commerce distribution and new supply chain requirements leading the way
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Mar 8, 2021

2020-2021 Houston Economic Outlook

Last January, we predicted steady growth for the Houston economy barring a “black swan” event and mentioned the “new Corona Virus in China” as an example. Little did we know that the virus would end up being the Godzilla of black swan events.
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Featured News

Jul 7, 2021

What is up with construction costs?

The recent surge in construction costs is a concern to anyone in the middle of or about to start a commercial or residential construction project. Increased construction activity and COVID-19 induced supply chain impacts have...
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Jun 2, 2021

Why you may not want to “hold out” for a possible higher sublease rent down the road.

In today’s market, subleases are a common strategy to relieve obligations for any type of space that is no longer used or needed. Unfortunately, in a down market, finding subtenants can be particularly challenging. Often, the focus for occupiers is on what the...
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