PUP Unisan was established in 1987 as a vocational-technical school offering short-term courses such as secretarial, fashion, food technology, automotive, refrigeration, radio & TV and practical electricity.

In 1988 two new courses were added: Computer and Driving when PUP was under the administration of Prof. Roberto C. Laguatan from Lopez, Quezon.

After a brief period of four years, through the leadership of the then-Director Prof. Violeta L. Ratcho, PUP Technical was granted junior college status by the university President Dr. Nemesio E. Prudente.

In June 1991, the branch registered 65 qualified freshmen to its two-year ladderized course leading to the Bachelor of Business Education.

With the financial aid given in 1993, the branch was allowed by the President of university to offer an undergraduate course in Business Education and with the budget released, a one-story, four-classroom building was constructed in 1994 in a 2.5-hectare (6.2-acre) lot donated by the municipality of Unisan to PUP.