Updated July 2026
A plain-language guide to child custody in Tuolumne County, from the forms you file at the Superior Court of California, County of Tuolumne to mediation, the best-interest standard, and how to prepare your paperwork without hiring an attorney.

Custody cases in Tuolumne County are filed and heard at the Justice Center Courthouse, 12855 Justice Center Drive, in Sonora, the county seat. The case runs through the Superior Court of California, County of Tuolumne. This one courthouse in the Sierra foothills near Yosemite serves Sonora, Twain Harte, and the rest of the county.
A custody request can be part of a divorce, a legal separation, or a parentage case for parents who were never married. After the case is open, either parent may ask for custody and visitation orders by using Form FL-300, Request for Order, with the FL-311 attachment. Family Code section 3011 requires the judge to decide what is in the best interest of the child. The judge looks at factors such as each parent's ability to provide a stable, safe home, with no preference based on either parent's gender.
Tuolumne County is a confidential, non-recommending county under Family Code section 3170's mediation requirement. The court's mediation page says the mediator does not testify in court or write any recommendation. If mediation does not settle the dispute, the case goes to a contested hearing, and the judge decides. Before mediation, parents must complete an orientation. It is offered in person on the first Wednesday of each month or online. A completion certificate must be filed before the mediation session, and both parties must take part because mediators will not schedule with only one parent.
Tuolumne County accepts email submission for only a limited set of document types. Self-represented parties may also file custody papers on paper in person.
Custody and visitation matters in Tuolumne County are handled by the Superior Court of California, County of Tuolumne, with the county seat in Sonora. Because courthouse locations, hours, and local Family Court Services or Child Custody Recommending Counseling programs change over time and can differ between branches, use the official California Courts court finder to confirm the current details for your case:
Find the Tuolumne County Superior Court (official California Courts finder)
California uses the same statewide rules in every county, including Tuolumne County. Custody has two parts: legal custody (who makes major decisions about health, education, and welfare) and physical custody (where the child lives). Either can be joint (shared) or sole (one parent). Judges decide custody based on the best interest of the child, and California law does not favor a parent based on gender.
You can ask for custody orders inside a divorce or legal separation case, or, if the parents were never married, by first establishing parentage. The core steps are:
There is no six-month waiting period for custody the way there is for a divorce to become final. Parents can also agree on a parenting plan and submit it as a stipulation for the judge to sign, which avoids a contested hearing entirely. If you and the other parent agree, that is almost always the faster and less costly path in Tuolumne County.
All Tuolumne County custody filings and hearings go through the Justice Center Courthouse in Sonora, at the Family Law window on the first floor. Local custody mediation forms, including TUO-FL-150, the Report on Mediation, and TUO-FL-175, the Certificate of Attendance of Cooperative Parenting, are both mandatory. Check the court's local forms page before your appointment.
Tuolumne mediation is confidential. If you and the other parent cannot agree, you must present your case at a contested hearing instead of relying on a mediator's recommendation. Schedule mediation by calling (209) 533-6565 with your case number and the other parent's mailing address. If domestic violence is involved, tell the clerk when you schedule, because one party may appear by phone for safety.
The Self-Help Center on the first floor of the courthouse is open weekdays. The separate Family Law Facilitator requires an appointment. If domestic violence is part of your case, a DV restraining order (Forms DV-100 and DV-110) can include temporary custody terms while your case is pending. Call 911 in an emergency. The National Domestic Violence Hotline, 1-800-799-7233, is available 24 hours a day.
Justice Center Courthouse handles custody filings, located at 12855 Justice Center Drive, Sonora 95370. Phone: (209) 533-6565.
The filing fee is $60. E-filing is available. Tuolumne County accepts email submission for limited document types only, not a full e-filing platform. Self-represented parties can also file paper documents in person; fax filing is not accepted for family law.
Tuolumne County Self-Help Center (https://www.tuolumne.courts.ca.gov/self-help/family-law) can help with procedure and paperwork. Located on the first floor of the Justice Center Courthouse, 12855 Justice Center Drive, Sonora. Open Monday through Friday, 8:00 a.m. to noon and 1:00 p.m. to 4:30 p.m., walk-ins welcome. Call (209) 533-5555 and select the self-help option. Services in English and Spanish, with interpreters available. Local Rules of Court, effective July 1, 2016 (Tuolumne County Superior Court Local Rules) applies; see https://www.tuolumne.courts.ca.gov/forms-filing/local-rules.
Local details reviewed August 2026. Offices and locations can change, so confirm with the official sites above before you file.
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File with the Superior Court of California, County of Tuolumne, at the Justice Center Courthouse, 12855 Justice Center Drive, Sonora. Go to the Family Law window on the first floor. Email submission is accepted for limited document types. Otherwise, file paper forms in person, because fax filing is not accepted.
Tuolumne is confidential and non-recommending. The court's mediation page says the mediator does not testify in court or write any recommendation. If mediation does not settle your dispute, the case goes to a contested hearing. The judge then decides based on the evidence presented.
You must complete a mediation orientation first. You can attend in person on the first Wednesday of each month, 1:00 p.m. to 4:00 p.m., or complete it online at pas.familieschange.ca.gov. File your completion certificate before your mediation session. Expect both parents to be required to participate.
Mandatory local forms include TUO-FL-150, the Report on Mediation, and TUO-FL-175, the Certificate of Attendance of Cooperative Parenting. Check the court's local forms page for current versions before your hearing. These forms are required in addition to the statewide FL-300 and FL-311 forms.
Tell the clerk about any domestic violence when you schedule mediation. One party may be allowed to appear by phone to protect safety. A DV restraining order (Forms DV-100 and DV-110) can also include temporary custody terms while your case is pending.
The Self-Help Center on the first floor of the Justice Center Courthouse is open weekdays, 8:00 a.m. to noon and 1:00 p.m. to 4:30 p.m., and walk-ins are welcome. Call (209) 533-5555 and select the self-help option. The separate Family Law Facilitator requires an appointment at (209) 533-6565.
This page is general information about California child custody procedure in Tuolumne County, not legal advice for your situation. Court locations, programs, and filing details change; always confirm current details with the Superior Court of California, County of Tuolumne or the official California self-help center resources. If your case involves domestic violence, abduction risk, or a child's safety, contact the court's self-help center or a licensed California family law attorney, and in an emergency call 911. Virdix is not a law firm and is not a substitute for an attorney.
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