Couples seeking to be married in Los Angeles County are encouraged to review the full list of eligibility requirements before applying or making an appointment. To obtain a marriage license in Los Angeles County both parties must be present together and provide "Proof of Identity" and age documents.Each party applying for a marriage license may choose to include on their marriage license the new name in the spaces provided on the marriage license. IMPORTANT: This information is instructional only. It is not legal advice. A cohabitation agreement protects unmarried partners. Call a Los Angeles cohabitation agreement attorney at the Law Offices of Maria N. Jonsson for help. It is not possible to enter into a common-law marriage in the state of California. Not if you live together for 7 years. California law considers couples in an intimate relationship who live together without the benefit of marriage as cohabitating.