To be considered as CA resident, you must physically reside in CA for a 12-month period. That means for you to qualify as in-state applicant, your family would need to be living in CA during the summer before your senior year in HS.

You have to live in the state 1-2 years before attending a University to be considered a resident. But you also have to fall under the other qualifications, like there are certain reasons in which you have to be in the state, which family moving does qualify.