Located at 61 Charles Street immediately east of the Tribute Communities Centre, the former Alger Press Building (1946-1993) was renovated and refurbished by Ontario Tech in 2010 and is one of the university’s key academic hubs. This historic Oshawa building dates back to 1903.

Charles Hall’s features include research laboratories, faculty and staff offices for the Mitch and Leslie Frazer Faculty of Education, and the Faculty of Social Science and Humanities (FSSH) on the third floor.

The second floor houses the FSSH’s Social Research Centre, extensive classroom space, lecture halls and common areas for students and faculty, as well as the Office of Student Life’s downtown Oshawa campus location services.

The main floor is home to student support services offered by the Ontario Tech Student Union; the Social Science, Humanities, and Education Library; and Information Technology Services.

In 2022, Ontario Tech announced it had purchased a parcel of land adjacent to Charles Hall at 154 Bruce Street, which creates space for future expansion at the university’s downtown Oshawa location.