Grandparents’ rights in California are narrower than many families expect. Grandparents can ask for visitation in certain situations, but courts must also respect a parent’s right to make decisions about their children.
Family Code section 3104 allows a grandparent to petition for reasonable visitation if there’s a preexisting relationship that has created a bond, and if visitation is in the child’s best interest and balances that interest against the parent’s rights. Generally, the petition can only be filed when the parents aren’t married or are separated, a parent’s whereabouts are unknown, a parent joins the petition, the child doesn’t live with either parent, or a stepparent has adopted the child.
There’s a strong presumption against grandparent visitation when the parents are married and both object. Parents’ wishes carry significant weight, following U.S. Supreme Court guidance in Troxel v. Granville.
Custody is a separate question. A grandparent can seek custody or guardianship when parental custody would be detrimental to the child and the grandparent’s custody serves the child’s best interest. Guardianship through probate court is a common path when parents can’t care for a child because of illness, substance use or incarceration.
Evidence matters in these cases. Photos, messages, school records and testimony showing a long, close relationship help the court understand what the child stands to lose.
Law & Mediation Offices of Dan DeSario & Associates, a Beverly Hills family law firm that handles guardianships, recommends mediation where possible. Many grandparent disputes involve hurt feelings that a structured conversation can help resolve, and children benefit when adults find agreement.
This article is general information about California family law and is not legal advice. Every case is different. Attorney advertising.
