The college's campus and grounds had been a
Marist Fathers seminary which was dedicated to, and at one time held relics of,
Saint Peter Chanel. The campus houses a chapel, library, accommodation, lecture and tutorial rooms, kitchens, and student areas. In 2018, the college constructed two new residential houses on-site, providing accommodation for an additional 34 students. In 2020, the college received funding and approval to construct a new academic centre on campus, including a new library, lecture theatres, tutorial rooms and dining hall. Over the years, Campion College has named several of its buildings in honour of donors, supporters, and figures associated with Catholic education. Two new residential buildings were opened in August 2018, with one named after Queensland Jesuit Fr Greg Jordan SJ. In August 2023, the college opened four additional residential halls and a new academic wing that includes classrooms, a lecture theatre, a grand hall, the Parousia Media Room, and the
Gina Rinehart Library. Two of the residential halls have been named in honour of
Fr Paul Stenhouse MSC and the charitable legacy of
Sue Ryder and
Leonard Cheshire. In March 2025, the college named the
George Cardinal Pell Grand Hall, supported by a donation from an anonymous benefactor. Other rooms on campus have been named in honour of
G.K Chesterton,
Christopher Dawson, the Right Reverend James Edward Bromley, Reverend Dr Leo W. Kelly, Maria Fernanda de Carvahlo,
Fr Julian Tenison-Woods, James and Peggy Power, and the Perez de la Sala family. == Controversies ==