Any document from a education institution MUST have your DOB on it. A letter from a social services agency addressed to you is acceptable.Check mark the TWO different documents below that you'll use as your proof of California residency. Home utility bill or cellular phone bill (Preferred) 3 Proof of California Residency (copies accepted, printed documents required). Two different documents are required from the list below. You must be continuously physically present in California for more than one year (366 days) immediately prior to the residence determination date. The following list includes common documents which may be used along with the MC 214 to verify a client's statement of California residency. Download a proof of residency letter template for family members, notarized or non-notarized, tailored for legal use. Be eligible to be a California resident.