John Dunphy, CCIM, SIOR

John Dunphy, CCIM, SIOR

Executive Managing Director

Current Responsibilities:

John Dunphy is an Executive Managing Director at JLL and a 33-year veteran of the Tampa Bay industrial market. John leads the Tampa industrial team with a focus on the entire Tampa MSA. John’s career experience as a landlord rep, tenant rep and investment consultant includes over 35M square feet leased/sold totaling over $4.1B in transaction value. With this experience, John fosters the growth and advancement of JLL’s industrial team members and the team’s footprint within the Tampa MSA.


Prior to joining JLL, John was Managing Director of Industrial Services and Partner at Colliers International Tampa Bay specializing in the sale and leasing of user and investment properties. John has been involved in over 5M square feet of ground-up construction for clients ranging from speculative developments for owners to build-to-suit requirements for owner-occupiers.

Education and Affiliations:

John earned a B.S. in Economics from The University of South Florida. He received the CCIM designation from the Commercial Investment Real Estate Institute and a SIOR designation from the Society of Industrial and Office Realtors. Fewer than 2,000 commercial real estate brokers hold both of these prestigious designations.


  • Over $4.1B in transaction value with over 1,500 transactions completed
  • NAIOP Best Land Deal – 2020
  • NAIOP Best Industrial Project – 2019
  • NAIOP Deal of the Year – 2006
  • Tampa Bay Business Journal Industrial Deal of the Year – 2003, 2004, 2006 & 2022
  • Number one overall industrial broker in the Tampa Bay MSA in 2014 and top three every year since 1998
  • Florida Gulf Coast Commercial Association of Realtors (FGCAR) Number One Industrial Producer, Industrial Deal of the Year (three times) and Overall Deal of the Year

Representative clients/key assignments):

Lowe’s, BTS, 1.2M SF

Ball, lease, 600,000 SF

CenterState Logistics Park, disposition, 1M SF

Harrod Properties, disposition, 1.4M SF

Cabot Properties, leased/sold over 2 million SF

Raytheon, disposition, 503,000 SF

Lockheed Martin, lease, 350,000 SF

Thomas Ranch (Sarasota), land sale, 10,000 acres

FedEx (Ocala/Polk), land sale, 130 acres, 450,000 SF BTS

E-commerce Company, 12 deals (Tampa MSA), 1.9M+ SF and 270+ acres

Great Bay Distributors, BTS, 360,000 SF