If you need proof that you have lived or are living in UC Berkeley campus housing, you can request an official rental verification from the university.
How to get an official rental verification
To request a rental verification, please fill out the Student Affairs Financial Services rental verification request form. Rental verification requests are processed by the Student Affairs Business Operations Department, which can also be reached at busops@berkeley.edu or by phone at 510-642-1524. Note that UC Berkeley Housing does not administer proof of residency or rental verification requests.