Regional Transit has two nearby regular bus routes on Howe Avenue which is the eastern border of Campus Commons. One route continues up Howe Avenue and down and west, I believe, to a main transfer center at Cal State Sacramento. The other route goes up Howe, east on American River Drive a short way, and then north on Munroe which becomes Fulton Avenue. There are connections to light rail on both routes.
I would also note that Safeway, CVS, cleaners, restaurants, and banks are all within one block or two from the eastern edge of Campus Commons - an easy walk. A little further are more restaurants, the upscale Pavillions shopping area, Loehman's Plaza, and Borders' Bookstore.