Hi! I will be finishing up all my Upper Divs this summer, but will have about 12 credits of electives left to finish my degree. It would save me a TON of money to move back home and do one semester at my community college back home to finish them up, though I have never heard of anyone doing that.
There typically are requirements about how many semesters you must be in residence at the college you are graduating from and how many credits you must have earned at that college. If you are at UCR, then the senior residency requirements are described here:
"Senior Residency:
The minimum residence at the University of California required for a degree is three quarters. One of the three quarters may be completed in a UCR summer session in which the student carries 12 units, unless a reduced load is approved in advance by the dean of the student’s college. Courses completed in the University of California Extension are not considered work in residence. Thirty-five (35) of the final 45 units must be earned in residence in the student’s college (this does not preclude the student from taking courses in other colleges on campus). For students who are enrolled in the Education Abroad Program, 35 of the final 90 units, including the final 12 units, must be earned in residence. Eighteen (18) of the 35 units may be completed in summer session courses on the Riverside campus. "
Basically it is up to your degree granting university what is allowed. You need to ask the Regiatrar’s office. That is the department that will determine whether or not you have met all requirements for your degree.