Phelan Hall is the oldest, largest, and most centrally located hall.  It was named after James D. Phelan, class of 1881, who was a mayor of San Francisco and a Unites States Senator.  This co-ed hall houses primarily sophomores and provides a diversity of options.  Students may choose single sex floors or co-ed floors, as well as themed floors, Saint Ignatius Institute, Erasmus Project and Ester Madriz Scholars Living and Learning community.

A laundry room, kitchen, and study room are all located on the first floor, while TV lounges are located on every floor.

Residents in Phelan are just steps away from the University Center which houses the main campus dining room and recreational facilities.

Phelan's entrance on the first floor is shared with the Office of Residence Life. The University Bookstore, KDNZ and KUSF, the campus radio stations, Residence Hall Association offices, Foghorn offices, and an ATM are located on the ground floor below Phelan.

Residents in this hall not only have great City and bay views, but also inspirational views of St. Ignatius Church and other campus historic sites.