John Duffie joined forces with Richard Nelson in March 2004 to found Nelson Duffie Interests. Through his partnership in NDI, he has been involved with numerous acquisitions over more than 16 years; multiple industrial projects involving repositioning, rehab and disposition; office, neighborhood retail, land and multiple mobile home communities. He has more than 40 years of active involvement in the Houston real estate community. Remaining active in many commercial real estate organizations, John served as 2012 President of NAIOP and served as chairman of its Howard W. Horne Legacy Award Committee. He is also a past member of the UH Bauer School Real Estate Program Advisory Board.

In addition, he served as president of the Society of Industrial and Office Realtors (SIOR) Houston Gulf Coast Chapter; Vice President, Treasurer & Director of the Houston Association of Realtors (HAR), and Director of the Texas Association of Realtors (TAR). John earned his bachelor’s degree in Finance from the Bauer School at the University of Houston. He and his family are members of St. Luke’s United Method Church where he has served as a member of its Foundation Board and as chair of its Real Estate Committee for 15 years.

His other community involvement includes board membership and Secretary of Executive Committee for Goodwill Industries of Houston where he is chairman of the Real Estate committee and member of the Goodwill Foundation Board of Directors.