Stepparent Adoption in Washington

Stepparent adoption is the most common type of adoption filed in Washington State. The process is simpler than other adoption types — in many cases, the home study is waived entirely — but the legal complexity depends almost entirely on one question: will the other biological parent consent?

If the other parent consents, a stepparent adoption can be completed in a matter of weeks. If they do not, you are looking at an involuntary termination of parental rights (TPR) petition, which is an adversarial legal proceeding that can take months and cost thousands of dollars. Knowing what you are facing before you file will save you time, money, and emotional energy.

When the Home Study Is Waived

Under Washington law, the court may waive the pre-placement report (home study) requirement for stepparent adoptions if the stepparent has lived with the child for one year or more. Since the child is already living in the home with their biological parent and the stepparent, the rationale is that the court does not need an independent assessment of the home environment — the child's current stability speaks for itself.

This waiver is not automatic. The court grants it on a case-by-case basis. If the judge has any concerns about the child's welfare — for example, if there is a history of DCYF involvement or if the child has special needs — the court can order a home study even in a stepparent case.

When the home study is waived, the process eliminates the most time-consuming and expensive component of adoption: the background clearances, home inspection, social worker interviews, and medical evaluations that are standard in other adoption types.

The Consent Question

The other biological parent must either consent to the adoption or have their rights involuntarily terminated.

If the other parent consents: They sign a relinquishment of parental rights, which must be executed before a judge or designated representative and approved by the court. Once signed and approved, the consent is irrevocable (subject to the same fraud/duress/competency exceptions that apply to all Washington adoptions). The adoption can then proceed directly to the finalization hearing.

If the other parent does not consent: The stepparent must petition for involuntary TPR under RCW 26.33.120. This requires proving that the parent has failed to perform their parental duties under circumstances showing a "substantial lack of regard" for their parental obligations. Common grounds include:

• Abandonment — the parent has had no contact with the child and has not provided financial support for an extended period
• Failure to maintain a relationship — the parent has been absent from the child's life without justification
• Unfitness — documented substance abuse, incarceration, or other circumstances that render the parent unable to care for the child

The evidentiary standard is "clear, cogent, and convincing evidence." This is a significant burden, and the biological parent has the right to legal representation and can contest the petition.

Filing in Superior Court

The stepparent files a Petition for Adoption in the Superior Court of the county where the family resides. The filing fee is approximately $260 in most Washington counties.

The required documents for a stepparent adoption include:

• Petition for Adoption
• Petitioner's Sworn Statement
• Consent from the other biological parent (or evidence supporting involuntary TPR)
• Certified copy of the child's birth certificate
• Certified copy of the marriage certificate between the biological parent and the stepparent
• Proposed Decree of Adoption

In King County, the Superior Court provides standardized adoption packets specifically for stepparent adoptions. In other counties, you may need to work with an attorney or the clerk's office to ensure your filing meets local procedural requirements.

The Finalization Hearing

If the home study is waived and consent is obtained, the finalization hearing can occur relatively quickly — often within a few weeks of filing, depending on court scheduling. The hearing is brief: the judge reviews the documents, confirms that all legal requirements are met, may ask the stepparent a few questions about their relationship with the child, and enters the Decree of Adoption.

Once the decree is entered, the stepparent becomes the child's legal parent with all the rights and obligations that entails. The other biological parent's rights are permanently severed. The Department of Health issues an amended birth certificate listing the stepparent as a parent.

Costs

Uncontested stepparent adoption (other parent consents): $1,500 to $3,500 in attorney fees plus the court filing fee. If the home study is waived, total costs can be under $2,000.

Contested stepparent adoption (involuntary TPR): $5,000 to $15,000 or more, depending on whether the case goes to trial. Attorney fees move from flat-rate to hourly billing in contested cases.

The Absent Parent Scenario

The most common contested situation is not an actively opposing parent — it is an absent one. The other biological parent has disappeared, has not been in the child's life for years, and cannot be located. Washington law still requires that this parent be served with notice of the adoption proceeding.

If the parent cannot be found after a diligent search, the court may authorize service by publication — a legal notice published in a newspaper of general circulation. If the parent fails to respond within the time specified by the court (typically 20 to 30 days), the court can proceed with TPR based on the parent's failure to appear under RCW 26.33.120.

Your attorney must document the search efforts — skip tracing, last known addresses, contact with relatives — to demonstrate that notice by publication was a last resort. Courts take this requirement seriously; a perfunctory search will not satisfy the standard.

One Important Consideration

Stepparent adoption permanently severs the child's legal relationship with the other biological parent. This includes the child's right to inherit from that parent, the parent's obligation to pay child support, and any existing custody or visitation orders. Before proceeding, consider whether adoption is the right legal tool — in some cases, a custody modification or legal guardianship may better serve the child's interests without permanently cutting the legal tie to the biological parent.

For a detailed walkthrough of the stepparent adoption process in Washington — including the specific RCW provisions, court filing checklists, and guidance on contested vs. uncontested cases — the Washington Adoption Process Guide covers everything you need.

Get the Washington Adoption Process Guide

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