After 25 years as the chief administrator and CFO/COO at The University of Texas Health Science Center at Houston, John led this institution from a small UT outpost in Houston to a comprehensive academic health center comprising seven health-related schools, hospitals, and research institutes in more than 2.5 million gross square feet of space, and involving more than 4500 staff, 1100 faculty, 3,500 students, and 2,000 trainees. Ultimately John had fiduciary accountability for a $600 million annual operating budget and a $750 million capital project budget. John’s most cherished accomplishment was the development and construction greatly needed Nursing School and Student Community Center. Personally leading and overseeing its planning and construction provided John up-close lessons about the many benefits of incorporating sustainable materials and methods into the new building and into the planning, procurement, design, and construction methodology. The building, a 200,000 gross square foot academic, research, and student services facility, now serves as a model for economic, environmental, and social responsibility. Porretto and his team incorporated sustainability principles campus-wide, thereby positively influencing decision-making for future design, construction, renovation, maintenance, and operation of all campus facilities. This facility is still the only LEED-certified sustainable building in the vast Texas Medical Center.