The construction for Engineering Building 3, later known as Harris Corporation Engineering building, began in 2002. Two years and $18,989,000 went into the construction of the 112,068 square foot building. The four-story building serves as the home of the Department of Electrical Engineering & Computer Science, as dedicated in January of 2007, and it is located adjacent to the College of Optics and Photonics and Engineering I and II. Together with Electrical Engineering and Computer Science in the new Harris Center, these facilities create a technology center on campus and the Harris building is the crowning facility of the engineering and computer science complex.

The Harris Building contains educational and research laboratories, offices for both faculty and support personnel, collaborative space for research projects, support space for student advising, seminar and classrooms. It allows the department to upgrade student support services, research and teaching laboratories, as well as facilitate faculty and student interaction and advanced research.