How to Get Custody or Guardianship of Your Niece in California

To get guardianship of your niece in California, you file a probate guardianship petition in the Superior Court of the county where she lives, give legal notice to her parents and other close relatives, cooperate with a court investigator who visits your home, and appear at a hearing where a judge decides whether appointing you serves her best interest. The filing fee starts at $225 for guardianship of the person alone, and uncontested cases usually move from petition to appointment in a matter of weeks.¹

Whether You Can Petition

California Probate Code Section 1510 lets any relative petition for guardianship regardless of immigration status, and the statute specifically includes aunts and uncles in its definition of “relative.”² A niece who is 12 or older can file the petition herself. You don’t need a lawyer, though one helps if a parent plans to fight the case.

The legal standard shifts depending on whether the parents agree. When both parents consent, the court looks at whether the arrangement is in the child’s best interest and appoints a suitable guardian.³ When a parent objects, the bar rises. Before appointing a guardian over a parent’s opposition, the judge must find that returning the child to that parent would be detrimental to her physical or emotional well-being.⁴ That detriment finding is the hardest part of a contested case. Judges will want documentation: school records showing chronic absences, medical records, police reports, statements from teachers or counselors, or evidence of substance abuse or incarceration.

Even with parental consent, the judge can deny a petition if the proposed guardian’s home isn’t suitable. The court weighs your stability, your relationship with your niece, and your ability to meet her daily needs. Relative placement is generally favored because it maintains family bonds.

Guardianship of the Person or the Estate

California probate guardianship comes in two forms, and most aunts and uncles need only one. Guardianship of the person gives you full legal and physical custody of your niece, including authority over her healthcare, education, and daily care.⁴ Guardianship of the estate covers managing a child’s property or finances, such as an inheritance, insurance settlement, or Social Security benefits. You can petition for one or both.

The distinction affects your fee and your ongoing reporting duties. If your niece has no significant assets, guardianship of the person alone is almost certainly what you need. If she does have assets, the court imposes additional accounting and bonding requirements to protect her property.

Forms, Fees, and Where to File

You file in the Superior Court of the county where your niece lives. The core paperwork is a short stack of Judicial Council forms:

Form GC-210, the Petition for Appointment of Guardian of Minor, which identifies your niece, explains why guardianship is needed, and names you as the proposed guardian.⁵
Form GC-210(CA), the Child Information Attachment, which asks for detailed facts about your niece’s life, current living situation, and any existing court cases involving her custody. File a separate attachment for each child if you’re petitioning for more than one.
Form GC-212, the Confidential Guardian Screening Form, which asks for your background information, including any criminal history, so the court can evaluate your suitability.

Everything is signed under penalty of perjury, so every fact must be truthful and verifiable. Before you sit down with the forms, pull together your niece’s full legal name and date of birth, every address where she has lived over the past five years, and the names and addresses of both parents, because the court requires them to be notified even if they’ve been absent for years. Blank forms are on the California Courts website, and most county courthouses have self-help centers where staff can walk you through them, though they cannot give legal advice.

The statewide filing fee is $225 for guardianship of the person only and $435 if you’re also petitioning for guardianship of the estate (or both). Riverside, San Bernardino, and San Francisco counties add a local surcharge for courthouse construction.¹ If you can’t afford the fee, file Form FW-001 to request a waiver; the court evaluates your income and expenses and can waive all or part of it.

Budget a little more beyond the filing fee. Many counties charge a separate fee for the court investigator; in some counties the investigation fee runs around $450 for a person-only guardianship. You’ll also pay someone to serve the papers on family members, since you cannot do it yourself.

Notifying Parents and Relatives

California requires you to notify specific people at least 15 days before the hearing, and the court cannot shorten that timeline for a regular guardianship petition.⁶ The people who must receive notice include:

Your niece, if she is 12 or older
Both parents, even if their whereabouts are uncertain
Anyone with legal custody of the child or serving as guardian of her estate
Grandparents on both sides, and siblings (including half-siblings)
Anyone currently caring for the child if different from the person with legal custody

You send the Notice of Hearing (Form GC-020) along with a copy of the petition itself.⁷ California requires someone who is at least 18 and not a party to the case to handle service, either by personal delivery or by mail depending on who is being served. That person then files a proof of service confirming everyone was properly notified. Missing even one required person can delay your hearing.

The ICWA Question

At the start of the case, the court is required to ask whether your niece may be a member of, or eligible for membership in, a federally recognized Indian tribe. This obligation comes from the Indian Child Welfare Act and applies in any proceeding that could result in a child being placed outside parental custody.⁸ If there is reason to believe your niece has Native American heritage, the court must notify the relevant tribe by certified mail and give the tribe an opportunity to intervene. If you’re unsure about your niece’s ancestry, ask family members beforehand so you can answer accurately at the hearing.

If Your Niece Is in Immediate Danger

If your niece can’t wait weeks for a regular hearing, you can file for a temporary guardianship at the same time as your main petition. California Probate Code Section 2250 lets the court appoint a temporary guardian on a showing of “good cause,” which typically means circumstances where delay would put the child at risk.⁹ The temporary guardian serves until the court makes a final decision on your regular petition.

You use Form GC-110, the Petition for Appointment of Temporary Guardian, to describe the emergency and explain why temporary authority is necessary.¹⁰ Courts can hear these requests on shortened notice or, in extreme situations, without the usual 15-day waiting period. If your niece has been abandoned, is living in an unsafe environment, or a parent has been arrested, this is the route to pursue while the full case moves forward.

The Investigation and the Hearing

After you file, the court assigns an investigator to look into whether your home is a safe place for your niece. For relative petitioners, this is handled by a court investigator rather than the county agency that handles non-relative cases.¹¹ Expect a home visit. The investigator checks that your niece will have a bed, adequate space, and a generally safe environment. They are not looking for a perfect house; they are looking for red flags.

The investigator interviews you, your niece, and sometimes the parents or other relatives, then writes a report for the judge that includes a recommendation on whether the guardianship should be granted. That recommendation carries significant weight. If the investigator flags concerns about your household, address them before the hearing if at all possible.

At the hearing itself, the judge reviews the investigator’s report, any written objections, and whatever evidence you have submitted. Uncontested hearings tend to be brief, often under 15 minutes, with the judge confirming the paperwork is in order, notice was given, and the arrangement serves your niece’s interest. Contested cases are different. If a parent appears and objects, the judge must make that detriment finding before appointing you, so bring documentation of the problems that led you to file: school records, medical records, police reports, photos, letters from teachers or therapists. Witnesses who can speak to the child’s living conditions or the parents’ situation strengthen your case.

If the judge grants your petition, the clerk issues Letters of Guardianship (Form GC-250). This single document is your proof of authority. Keep certified copies, because you will need to show it to doctors, schools, insurance companies, and anyone else who needs to verify your legal relationship to your niece.¹²

What You Can Do After You’re Appointed

Once appointed, you hold full legal and physical custody. Your niece’s parents’ rights are suspended for the duration of the guardianship but not terminated.⁴ You make all decisions about her healthcare, education, and daily life. The parents keep the ability to petition the court later to end the guardianship.

You can enroll your niece in school, consent to medical treatment, and apply for benefits on her behalf. If she needs a passport, you can apply as her legal guardian by presenting the court order at a passport acceptance facility.¹³ For international travel, carry a copy of the Letters of Guardianship and the court order, since some countries require proof of legal authority over a minor at their borders.

The court may require you to file an annual Confidential Guardianship Status Report (Form GC-251). When required, it is due within one month of the anniversary of your appointment each year.¹⁴ The court also keeps the right to schedule periodic review hearings to confirm your niece is thriving.

Visitation with the Parents

Guardianship doesn’t erase parents from the picture. If the judge doesn’t include a specific visitation order when granting the guardianship, you as guardian decide who visits your niece, how often, and under what conditions.⁴ That is a powerful position, but use it thoughtfully. Courts frown on guardians who cut off parental access without good reason.

A parent can petition the court at any time for a visitation order, and the court can also build a visitation schedule into the guardianship as a condition of the appointment. If you have legitimate concerns about a parent’s behavior during visits, such as substance use or verbal abuse, document those incidents and raise them with the court. The judge can order supervised visitation or impose restrictions while still allowing some contact.

Tax Credit and Financial Aid

As your niece’s legal guardian, you may qualify for the Child Tax Credit if she meets the IRS definition of a qualifying child; nieces and nephews are on the list of eligible relatives. For the most recent tax year, the credit is worth up to $2,200 per qualifying child, with a refundable portion of up to $1,700 if you owe little or no federal income tax.¹⁵ To claim it, your niece must live with you for more than half the year, be under 17 at year’s end, and be claimed as a dependent on your return. You both need Social Security numbers.

The financial aid picture is worth knowing about early. When your niece applies for college financial aid, a legal guardianship (current or past) qualifies her as an independent student on the FAFSA, which means her aid eligibility is based on her own finances rather than a parent’s income.¹⁶ That often results in significantly more financial aid than an informal arrangement would produce.

How the Guardianship Ends

A probate guardianship automatically terminates when your niece turns 18. Before that, a parent, the guardian, or the child herself can petition the court to end it early. The court will grant termination only if it determines that ending the guardianship is in the child’s best interest. A parent seeking to regain custody doesn’t automatically get the child back by filing a petition; the judge evaluates whether the circumstances that led to the guardianship have genuinely changed.

If a parent has completed rehabilitation, secured stable housing, or otherwise resolved the issues that made guardianship necessary, the court may terminate and restore custody. The burden is on the parent to show real, sustained improvement, and courts are cautious about disrupting a stable placement, especially when the child has been living with the guardian for a long time. If a parent files for termination, bring evidence of your niece’s current stability and any concerns you have about the parent’s readiness to resume full-time care.

1
California Courts. Statewide Civil Fee Schedule Effective January 1, 2026
2
California Legislative Information. California Probate Code 1510
3
California Department of Social Services (CDSS). Probate Code 1514 – Appointment of Guardian
4
California Courts. Information on Probate Guardianship of the Person
5
California Courts. GC-210 Petition for Appointment of Guardian of Minor
6
California Legislative Information. California Probate Code 1511
7
Judicial Branch of California. Figure Out Who You Have to Notify and How
8
eCFR. 25 CFR 23.111 – Notice Requirements for Child-Custody Proceeding Involving an Indian Child
9
California Legislative Information. California Probate Code 2250
10
California Courts. GC-110 Petition for Appointment of Temporary Guardian
11
California Legislative Information. California Probate Code 1513
12
Judicial Branch of California. Letters of Guardianship GC-250
13
Travel.State.Gov. Apply for a Child’s Passport Under 16
14
California Courts. Rule 7.1003 – Confidential Guardianship Status Report Form
15
Internal Revenue Service. Child Tax Credit
16
Federal Student Aid. Independent Student