All of the schools in CA, if I am not mistaken require a Bachelors Degree. The schools don't care what you have it in, just as long as you do well in the Pre-
Req, GRE, and have some experience (work/volunteer).
I would advise you obtain your B.A. or B.S. before attended graduate school. Just so you know what is to be expected and if you can handle the course load.