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J.D. Byrnes III

Senior Managing Director

J.D. Byrnes III is a senior managing director for Newmark Knight Frank's Global Corporate Services platform.  As the head of the firm's account management group, Mr. Byrnes oversees the global team of account managers and transaction managers supporting over 100 clients around the globe. As an account manager for several of the firm's largest accounts, he specializes in corporate real estate consulting, financial planning, portfolio optimization, portfolio management and transaction management.

Throughout his 18 years in the real estate industry, Mr. Byrnes has developed strategic portfolio optimization strategies for major national and global corporate clients that include Cummins Inc., Dex One, HNI Corporation, IBM, Ingersoll-Rand, Kraft Foods North America, Metropolitan Life Insurance Company, MillerCoors LLC, The Nielsen Company, Océ North America and Sears Holdings Corporation. In the past four years, Mr. Byrnes has completed over 4.6 million square feet of commercial real estate transactions valued at approximately $450 million.

Prior to joining Newmark Knight Frank in 2012, Mr. Byrnes was an account manager with the Corporate Services Group at Grubb & Ellis, where he was responsible for managing several of the firm's largest strategic accounts.

Recent major initiatives:

  • Led 10-state site selection and lease negotiation project for second-largest IBM lease transaction in the U.S. since 2000
  • $70 million reduction in real estate expense for Fortune 100 insurance company over 14-month period
  • Led national portfolio restructuring project for major beverage company that reduced real estate spending by 16%


  • Top Performer, Account Management Award, Grubb & Ellis, 2010
  • Office Transaction of the Year Finalist, NAIOP Chicago Chapter, 2001


  • Member, CoreNet

Mr. Byrnes holds a Bachelor of Arts degree in marketing management from the University of St. Thomas.

J.D. Byrnes III
J.D. Byrnes III
Senior Managing Director
500 W Monroe Street
Suite 2900
Chicago, IL 60661
United States
T  312.224.3207

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Areas of Specialization
  • Consulting
  • Financial Planning
  • Portfolio Management
  • Transaction Management

Years of Experience
18 years