To get custody of your grandchild in California, you file either a request for a custody order in family court or a petition for guardianship in probate court, and then you convince the judge that leaving the child with a parent would harm the child and that custody with you is in the child’s best interest.1California Legislative Information. California Family Code FAM 3041 The bar is high on purpose. California courts start from a strong presumption that children belong with their parents, and a grandparent has to overcome that presumption with real evidence. The rest of this guide walks through which route fits your situation, what you have to prove, what to file, and what happens after you file.
Family Court Custody or Probate Guardianship
Both paths can put a grandchild in your legal care. They live in different parts of the court system and suit different situations.
When Family Court Custody Fits
A Family Code custody order works best when a family law case is already open between the parents, such as a divorce or paternity action. You ask that court to grant custody to you as a nonparent, using the same courthouse and case number. California law ranks custody preferences in a specific order: first to one or both parents, then to whoever the child has been living with in a stable home, and finally to any other person the court considers suitable.2California Legislative Information. California Family Code 3040 As a grandparent you fall into the second or third category, which means you have to clear an additional legal hurdle before the court will award you custody over a parent’s objection.
When Probate Guardianship Fits
A probate guardianship is usually the better route when no family law case exists and no divorce or custody proceeding is underway. You file a separate petition in probate court asking to be appointed the child’s legal guardian. The court can appoint a guardian when doing so is “necessary or convenient,” which generally means no parent is willing, available, or suitable to care for the child.3California Courts. Information on Probate Guardianship of the Person
A guardianship gives you legal and physical custody along with the right to make decisions about the child’s education, medical care, and daily life. It suspends the parents’ custodial rights for as long as the guardianship remains in place, but it does not terminate their parental rights.3California Courts. Information on Probate Guardianship of the Person A parent can later petition the court to end the guardianship and regain custody if circumstances change. The guardianship route also triggers a court-ordered investigation of your home and background before the hearing.
If a parent contests either type of case, the same core legal standard applies. Choosing the wrong path can mean refiling from scratch, so if you are not sure, a one-time consultation with a family law attorney before you file is worth the money.
What You Have to Prove
This is where most grandparent custody cases are won or lost. Under California Family Code section 3041, a court cannot give custody to a nonparent over a parent’s objection unless you prove two things: that placing the child with the parent would be detrimental to the child, and that custody with you serves the child’s best interest.1California Legislative Information. California Family Code FAM 3041
The general standard is clear and convincing evidence, which is a higher bar than the “more likely than not” standard used in most civil cases. You need specific evidence of harm, not a general sense that the child would be better off with you. Examples courts have found compelling include documented substance abuse, a pattern of neglect, abandonment, incarceration, untreated mental illness that directly affects the child, or domestic violence in the parent’s home.
A finding of detriment does not require a finding that the parent is “unfit.” A parent can be a decent person who, for reasons outside their control, cannot safely care for the child right now. The court’s focus is the effect on the child.
The Caregiver Exception
If you have already been raising the child, the law tilts in your favor. When you have been acting as the child’s parent on a day-to-day basis for a substantial period, meeting both physical and emotional needs, the law recognizes that removing the child from your home is itself a form of harm. The burden drops to preponderance of the evidence (more likely than not), and the court presumes that custody with you is in the child’s best interest unless the parent shows otherwise.1California Legislative Information. California Family Code FAM 3041
This is a significant advantage. If you have been the child’s primary caregiver, document the timeline carefully: when the child moved in, who takes the child to school and to doctor appointments, and who handles day-to-day decisions.
Emergency Custody When the Child Is in Danger
If the child is in immediate danger, you do not have to wait weeks for a regular hearing. California allows the court to issue an emergency custody order (called an ex parte order) when there is a showing of immediate harm to the child or an immediate risk that the child will be removed from California.4California Legislative Information. California Family Code 3064
“Immediate harm” includes recent or ongoing domestic violence, sexual abuse, or a parent with illegal access to firearms. The court evaluates whether the threat is current or follows a demonstrated pattern, not whether something happened years ago. You file a declaration under penalty of perjury describing the specific danger, supported by whatever evidence you can gather quickly: police reports, photos, CPS records, medical records, or witness statements.
An ex parte order is temporary. The court will set a full hearing within about 20 to 25 days so both sides can be heard. Courts take genuine emergencies seriously but reject requests that amount to ordinary custody disagreements. If you believe the child is being harmed right now, talk to a family law attorney the same day or go directly to the courthouse.
Forms to File
Which forms you use depends on the path you choose. Gathering the right paperwork before you go to the courthouse can prevent multiple trips.
Family Court Custody Forms
- Request for Order (FL-300), the main form asking the court for a custody order and setting a hearing date.5California Courts Self Help Guide. Request for Order FL-300
- Declaration Under UCCJEA (FL-105), which gives the court the child’s living history over the past five years so it can determine whether California has jurisdiction.6California Courts. Declaration Under Uniform Child Custody Jurisdiction and Enforcement Act UCCJEA
- Summons (SUM-100), if you are starting a new case rather than joining an existing one.
Prepare a written declaration explaining your relationship with the child, how long the child has lived with you if applicable, and the specific facts supporting your claim that placing the child with a parent would be harmful. Attach supporting evidence like school records, medical records, police reports, or CPS referrals.
Probate Guardianship Forms
- Petition for Appointment of Guardian of Minor (GC-210), the primary petition identifying the child, the parents, and why a guardian is needed.7California Courts. Petition for Appointment of Guardian of Minor GC-210
- Child Information Attachment (GC-210(CA)), filed for each child covered by the petition.
- Declaration Under UCCJEA (GC-120), the guardianship equivalent of FL-105.
- Consent of Proposed Guardian (GC-211), your formal agreement to serve as guardian.
- Confidential Guardian Screening Form (GC-212), background information the court uses to evaluate your suitability.
A complete checklist of required guardianship forms is available on Judicial Council form GC-505. All forms can be downloaded from the California Courts website or picked up from your local court clerk’s office.
Information to Have on Hand
Regardless of path, collect the following before you start filling out forms: full legal names, dates of birth, and current addresses for the child, both parents, and yourself; the child’s current living situation; details about any existing custody orders or pending court cases involving the child; and a timeline of specific events supporting your petition, such as dates when CPS was called, when the child moved into your home, or when a parent was incarcerated.
Filing, Fees, and Serving the Parents
File your completed forms with the Superior Court clerk in the county where the child lives. The filing fee for a family law custody petition is $435 as of 2026.8Superior Court of California. Statewide Civil Fee Schedule Effective January 1 2026 A later motion to modify or enforce custody or visitation costs an additional $60 plus a $25 surcharge. If you cannot afford the fees, ask the clerk for a fee waiver application when you file.
After the court stamps your documents, you have to formally deliver copies to both parents. This is called service of process, and you cannot do it yourself. The person who serves the papers must be at least 18 and not a party to the case. You can use someone you know, a professional process server (typically $40 to $200), or the county sheriff’s office in most counties. Once served, the other parent has 30 days to file a response, and your case can move forward after that deadline whether they respond or not.9California Courts. Serve Your Child Custody and Support Papers
Mediation, Investigations, and the Hearing
California law requires mediation before a judge will hear a contested custody or visitation case.10California Courts. What to Expect from Family Court Mediation If you and the parents cannot agree, the court sends you to a mediator through Family Court Services. Mediation is free, confidential, and run by a trained neutral who tries to help everyone reach an agreement without a trial.
If mediation produces an agreement, the mediator writes it up and the judge typically signs it into a court order. If it does not, the case moves to a hearing. Sometimes this happens the same day; other times you get a future court date.10California Courts. What to Expect from Family Court Mediation At the hearing, the judge may issue temporary orders governing where the child lives while the case is pending, and schedule further proceedings if needed.
Probate guardianship cases add another step: the court typically orders an investigation of your home and background before the hearing. An investigator (often from the county’s probate department) visits your home, interviews you and the child, and reports back to the judge on whether the guardianship is appropriate.3California Courts. Information on Probate Guardianship of the Person In family court cases, the judge may order a custody evaluation under Family Code section 3111, where a court-appointed evaluator interviews family members and makes a recommendation. These evaluations carry real weight, so treat the process seriously.
How the Judge Decides
Once you clear the detriment hurdle, the judge’s guiding principle is the child’s best interest. California’s public policy declares that the child’s health, safety, and welfare is the court’s primary concern in every custody decision.11Justia Law. California Family Code 3020 The court weighs the child’s health, safety, and welfare in each proposed home; any history of abuse or domestic violence by a parent or by the person seeking custody; the nature and amount of the child’s contact with each parent; and habitual substance abuse by a parent.12California Legislative Information. California Family Code FAM 3011 – Factors in Determination of Best Interests of Child
The court can consider any other factor it finds relevant. If the child is old enough to express a thoughtful preference, the judge may take it into account, though there is no fixed age at which a child’s wishes become controlling. In probate guardianship cases, the Probate Code explicitly requires the court to consider the preference of a child who is old enough to form an intelligent opinion about who should be guardian.
A ruling in your favor produces a custody order. Physical custody sets where the child lives; legal custody is the right to make major decisions about the child’s education, healthcare, and welfare. Either can be sole or joint, and orders can be temporary while the case is pending or permanent going forward. Even a permanent order can be modified later if someone shows a significant change in circumstances, but courts do not undo a stable custody arrangement lightly, especially when the child has been thriving in your care.
Child Support and Financial Help
Gaining custody does not erase the biological parents’ financial obligations. If you win custody, you can ask the court to order one or both parents to pay child support to you. California calculates support using a statewide formula based on each parent’s income, the time the child spends with each party, and certain deductions. Ask for support at the same time you file your custody petition; adding it later means another round of paperwork and court appearances. Your county’s Department of Child Support Services can help establish and enforce a support order at no cost.
Several state programs can also help with the cost of raising a grandchild:
- CalWORKs cash aid allows you to apply as a “non-needy relative caregiver,” which means the county looks only at the child’s income and resources, not yours. Grandparents and other close relatives qualify.
- Medi-Cal covers low-income children regardless of who they live with.
- CalFresh food assistance uses your household income and size for eligibility. Caregivers 60 or older or on disability benefits get additional deductions.
- Kin-GAP (the Kinship Guardianship Assistance Payment program) provides monthly payments to relative guardians, but only when the child was previously a dependent or ward of the juvenile court and was placed in your home for at least six consecutive months through the child welfare system. Payments are generally higher than CalWORKs and can continue until age 21 in some cases.13California Department of Social Services. Kinship Guardianship Assistance Payment Kin-GAP Program
Contact your county’s social services office to find out which programs the child qualifies for. If you are already on CalWORKs and later become eligible for Kin-GAP or foster care payments, switching programs may increase your monthly benefit substantially.
Whether to Hire an Attorney
You are allowed to represent yourself in a custody or guardianship case, and the California Courts self-help center provides free guides and forms for both paths. Many courthouses also have self-help facilitators who can answer basic procedural questions. Grandparent custody cases are harder than typical custody disputes because you are fighting the presumption that children belong with their parents. If the parents hire a lawyer and you do not, the imbalance can be significant.
Family law attorneys who handle nonparent custody cases typically charge between $250 and $500 per hour. If cost is a barrier, your county’s legal aid organization may take your case for free if you meet income guidelines. Some attorneys offer limited-scope representation, handling the court appearances while you do the paperwork, which can cut costs. At minimum, a one-time consultation to review your evidence and advise you on which legal path to pursue is worth it before you file.