Families do not always match the paperwork. A stepparent who has raised a child since infancy, a same-sex partner who was there at the birth but never adopted, a grandparent or relative who stepped in when a parent could not — these people are parents in every practical sense, and yet without legal status they can lose the child entirely when a relationship ends.
Washington's de facto parentage statute, enacted in 2018 as part of the state's Uniform Parentage Act, exists for exactly that situation. It is a demanding standard, but for the right family it is life-changing.
We handle these petitions, and we also represent legal parents responding to a de facto parentage claim.
What do you have to prove for de facto parentage?
The court must adjudicate you a parent if you demonstrate, by a preponderance of the evidence, that:
| Element you must prove | What it means in practice |
|---|---|
| 1. Residence | You lived with the child as a regular member of the household for a significant period |
| 2. Consistent caretaking | You did the day-to-day work of raising the child |
| 3. Full and permanent responsibility | You took on a parent's responsibilities without expecting payment |
| 4. Holding out | You presented the child as your own |
| 5. Bonded, parental relationship | The child's bond with you is parental and dependent in nature |
| 6. Another parent fostered it | An existing legal parent encouraged or supported that bond — this is the element that most often decides cases |
| 7. Best interest | Continuing the relationship serves the child |
All seven must be proved by a preponderance of the evidence under RCW 26.26A.440, and the petition must be filed before the child turns eighteen.
Every element must be met. The one that most often decides cases is the sixth: the existing legal parent must have encouraged or supported the parent-child bond. Someone who cared for a child over a parent's objection generally cannot establish de facto parentage.
How does a de facto parentage case proceed?
You must file before the child turns eighteen. The petition begins with a verified pleading alleging specific facts supporting the claim, served on all parents and legal guardians. Other parties may file verified responses. The court first decides standing — holding an expedited hearing if the pleadings raise conflicting facts material to standing — and only then proceeds to adjudicate parentage. Temporary orders may be available in the meantime depending on the strength of the petition and the child's need for stability.
What does being a de facto parent mean?
A de facto parent is a legal parent, full stop — with the same standing as any other parent regarding residential time, decision-making, and support. That cuts in both directions: the rights are real, and so are the obligations, including child support. It also does not remove anyone else's parental status; de facto parentage adds a parent rather than replacing one.
Is de facto parentage better than adoption or guardianship?
Versus adoption
Adoption is the strongest and cleanest protection, but it requires terminating or relinquishing an existing parent's rights, plus home studies and a longer process. De facto parentage does not terminate anyone's rights and does not require a home study — but it must be proven.
Versus guardianship
A minor guardianship generally requires that no parent is willing or able to parent, or that the parents consent, and it does not create permanent parental status. De facto parentage is available even where the child has a fit parent, and can be granted over that parent's objection if the elements are met.
Versus a parenting plan alone
Non-parents generally lack standing to seek a parenting plan. Establishing parentage is what creates the standing to ask for residential time in the first place.
What evidence proves de facto parentage?
These cases are proven with the texture of daily life: school and medical records listing you, photographs across years, messages in which the legal parent refers to you as the child's parent, evidence of financial support, testimony from teachers, coaches, doctors, and family. If you are in a family where this may someday be contested, the single most useful thing you can do is keep that record — and, better still, pursue adoption or an agreed de facto parentage order while everyone is still in agreement.
Frequently asked questions
Who can seek de facto parentage in Washington?
Anyone who has functioned as the child's parent and can prove the seven statutory elements — commonly stepparents, unmarried partners of a legal parent, and relatives who raised the child. The petition must be filed before the child turns eighteen.
Can I be a de facto parent if the legal parent objects?
Potentially. Unlike guardianship, de facto parentage can be granted over a fit parent's objection — but you must still prove that this parent previously fostered or supported the parent-child bond, which is often the decisive issue.
Does becoming a de facto parent mean I owe child support?
Yes. De facto parentage confers full legal parent status, which includes the obligations of a parent as well as the rights.
Is adoption better than de facto parentage?
Where it is available, adoption is generally the stronger and more certain protection. De facto parentage is the route when adoption is not possible because another parent's rights cannot or should not be terminated.
Does this apply to grandparents?
It can, where a grandparent genuinely raised the child as a parent and the elements are met. But courts have been careful not to read the statute so broadly that ordinary grandparent involvement becomes parentage.
Ready to talk through your situation?
Reach a Schwab Law attorney in Spokane today.