A site large enough to anticipate future growth was purchased, with the school's move to its new 387-acre (1.57 km 2) campus being completed by 1961. In 1955, Harpur began to plan its current location in Vestal, a town next to Binghamton. Harpur also received 16,000 non-duplicate volumes and the complete contents of the Champlain College library. When Champlain closed in 1952 to make way for the Plattsburgh Air Force Base, the records and some students and faculty were transferred to Harpur College in Binghamton. At the time it joined Champlain College in Plattsburgh as the only two liberal arts schools in the New York state system. In 1950, it split from Syracuse and became incorporated into the public State University of New York (SUNY) system as Harpur College, named in honor of Robert Harpur, a colonial teacher and pioneer who settled in the Binghamton area.
By the 1948–1949 academic year, these could be completed entirely at the college. Originally, Triple Cities College students finished their bachelor's degrees at Syracuse.
In the early 1940s he collaborated with local leaders to begin establishing the two-year school as a satellite of private Syracuse University, donating land that would become the school's early home. Watson, a founding member of IBM in Broome County, viewed the Triple Cities region as an area of great potential.