Washington Guardianship for Grandparents and Relatives: How to Get Legal Custody

The Legal Path for Grandparents in Washington

If you are a grandparent raising a grandchild in Washington state and you need legal authority, your primary route is minor guardianship under Chapter 11.130 RCW. This replaced the old nonparental custody law on January 1, 2021, and is now the sole court pathway for grandparents and other nonparents seeking custody through the guardianship system.

A minor guardianship order gives you the legal right to make decisions about the child's daily care, education, and medical treatment. The order lasts until the child turns 18, and parents cannot simply take the child back while the order is in force.

What the Court Requires You to Prove

Washington's guardianship statute respects parents' constitutional rights under Troxel v. Granville. The court will appoint you as guardian only if it finds the appointment is in the child's best interest and at least one of these conditions is met:

• Both parents consent after being fully informed of the consequences
• All parental rights have been terminated (through a separate proceeding)
• Clear and convincing evidence shows that no parent is willing or able to exercise parenting functions

The third option is the most common path for grandparents. You are not asking the court to find the parents unfit in a general sense — you are providing specific evidence that, right now, no parent is stepping up to handle the day-to-day responsibilities of raising this child. That evidence might include documentation of incarceration, substance abuse treatment records, abandonment, or chronic untreated mental health conditions.

The Filing Fee Exemption for Relatives

One advantage grandparents and other relatives have: under RCW 11.130.170, you are statutorily exempt from the court filing fee when you are a relative and not a professional guardian or conservator. The standard filing fee in King County is $290 as of June 2026. Other counties charge similar amounts. The relative exemption eliminates this cost entirely — you do not need to prove financial hardship or file a separate waiver.

The Eight Steps of the Process

The minor guardianship process follows a predictable sequence:

1. Prepare the petition package. Complete Form GDN M 102 (Minor Guardianship Petition), GDN M 103 (Declaration of Reasons), GDN M 410 (Confidential Information Sheet), and GDN M 407 (Criminal History Cover Sheet).

2. Initiate background checks. Request WSP WATCH checks for all household adults, and file GDN M 404/405 to get the judge to order DCYF to release child abuse records.

3. File in Superior Court. Submit everything to the clerk in the county where the child resides or is present when the case begins, or where another proceeding about the child's custody or parental rights is pending (RCW 11.130.030). Claim your relative fee exemption at the counter.

4. Serve the parents. Both parents must be personally served with the Summons, Petition, and Notice of Hearing. If the child is 12 or older, they must be served too. Grandparents and adult siblings receive informal notice. File Proof of Service (GDN ALL 007) for each party.

5. Complete lay guardian training. The state requires you to complete an online training module through the Washington State Courts Guardian Portal before the hearing.

6. Cooperate with the court visitor. If the child is 12 or older and does not have an attorney, or if a parent cannot be located, the court appoints a neutral investigator who interviews you, the child, and relevant parties.

7. Attend the hearing. If both parents have consented or defaulted, this is typically a brief procedural review. If a parent objects, the case moves to a contested track with a trial date.

8. Receive your Letters of Guardianship. After the judge signs the order (GDN M 105) and you sign the Acceptance of Appointment (GDN ALL 003), the clerk issues Letters of Guardianship (GDN ALL 004) — your proof of legal authority.

After the Order: What Changes

With Letters of Guardianship in hand, you can:

• Enroll the child in school and make educational decisions
• Consent to medical treatment and access health records
• Apply for benefits (child-only TANF, Apple Health) with documentation of your authority
• Add the child to your insurance
• Travel with the child as allowed by the order
• Apply for a passport if the order gives you authority to do so and the State Department's consent requirements are met
• Make day-to-day care and living arrangement decisions

Parents retain their underlying legal status unless their rights have been separately terminated. The guardianship order typically includes provisions for parent contact — a visitation schedule set by the court.

What Grandparents Should Know About Contested Cases

If a parent objects to the guardianship, you face a higher bar. The court must balance the parent's constitutional right to raise their child against the child's safety and welfare. Clear and convincing evidence is a demanding standard — more than a preponderance of evidence but less than beyond a reasonable doubt.

An objecting parent who is indigent has the right to court-appointed counsel under RCW 11.130.200. This means you may be arguing your case against a lawyer even if you do not have one yourself.

If you are facing a contested case, get legal help. The CLEAR hotline (1-888-201-1014) through the Northwest Justice Project screens low-income callers for free representation. County court facilitators can review your forms, though they cannot provide legal strategy.

The Washington Guardianship and Custody Court Process Guide walks through the entire process with tracking worksheets for service deadlines, background checks, and hearing preparation.

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