Regulations defining California residence for purposes of tuition and fees are exactly the same for all University of California campuses. California residence is determined by each campus residence deputy, or on appeal by the Office of General Counsel (OGC).
Full details of the regulations are available in the University of California Residence Policy and Guidelines (PDF). The OGC residence website summarizes UC policy and regulations on
Students should read this important fact sheet from UC OGC about residence for tuition purposes.