Next of kin in Washington State is not a single title with a fixed meaning. Different chapters of the Revised Code of Washington set different priority lists depending on the decision at hand: consenting to medical treatment, arranging burial, inheriting property without a will, or suing over a wrongful death. In most contexts, the order starts with a surviving spouse or registered domestic partner, then adult children, then parents, then siblings, and moves outward to more distant relatives from there.
A few rules run through every context. Registered domestic partners have the same standing as spouses for every purpose under state law.1Washington State Legislature. RCW 26.60 – State Registered Domestic Partnerships Adopted children are treated identically to biological children once the adoption decree is entered.2Washington State Legislature. RCW 26.33 – Adoption And Washington does not recognize common-law marriage created in-state. You need a valid marriage license or a registered domestic partnership to claim spousal rights. The one exception: Washington will honor a common-law marriage that was validly established in a state that recognizes them.
Who Can Make Medical Decisions If You Cannot
When a patient cannot make their own healthcare decisions and left no advance directive, Washington law sets a strict order of surrogate decision-makers. A person higher on the list overrides everyone below them, and a lower-priority person can only act when no one above them is available and willing.3Washington State Legislature. Washington Code 7.70.065 – Informed Consent – Persons Authorized to Provide for Patients Who Do Not Have Capacity – Priority
- A court-appointed guardian
- An agent under a durable power of attorney for healthcare
- Spouse or registered domestic partner
- Adult children (18 or older)
- Parents
- Adult siblings
- Adult grandchildren familiar with the patient
- Adult nieces and nephews familiar with the patient
- Adult aunts and uncles familiar with the patient
- A close friend who signs a declaration under penalty of perjury confirming familiarity with the patient’s values and that no higher-priority person is willing and able
This authority covers every kind of treatment decision, including whether to start, continue, or stop life-sustaining measures such as ventilator support or feeding tubes. The close-friend category at the bottom means that even someone with no blood or marital tie can end up as the legal decision-maker when no family member steps forward.
If no surrogate from any category is available and someone needs ongoing decision-making support, a court can appoint a guardian under Washington’s Uniform Guardianship, Conservatorship, and Other Protective Arrangements Act (RCW 11.130), which replaced the older guardianship law in 2022. Depending on the scope the court grants, the guardian may have authority over personal care, living arrangements, and financial matters.
Who Decides Funeral and Burial Arrangements
Control over a deceased person’s remains follows its own priority order under RCW 68.50.160.4Washington State Legislature. Chapter 68.50 RCW – Human Remains Legally binding written instructions left by the deceased come first and must be followed. Without those, the surviving spouse or domestic partner has the primary right to make arrangements, then adult children, then parents, then siblings, and on through extended family.
Family disputes over burial and cremation are common when the deceased left no written wishes, and a court can intervene to resolve them. A simple written statement of preferences prevents most of these fights.
Who Inherits Without a Will
When a Washington resident dies without a will, the intestate succession statute controls who inherits.5Washington State Legislature. Washington Code 11.04.015 – Descent and Distribution of Real and Personal Estate The outcome turns on whether the property is community or separate, a distinction that carries real weight in a community-property state.
Community Property Versus Separate Property
Community property is what either spouse earned or acquired during the marriage. Separate property is what a spouse owned before the marriage or received individually as a gift or inheritance during it. The surviving spouse or domestic partner automatically receives the deceased’s entire share of community property. The separate property split depends on which other relatives survive:
- Spouse plus children: the spouse receives half of the separate property, and the children split the other half equally.
- Spouse plus parents or siblings, no children: the spouse receives three-quarters, with the remainder going to the parents, or to siblings if no parents survive.
- Spouse with no surviving children, parents, or siblings: the spouse takes all of the separate property.
When No Spouse Survives
If no spouse or domestic partner survives, the entire estate passes to the deceased’s children in equal shares. If a child predeceased the parent but left children of their own, those grandchildren step into their parent’s share. This is per stirpes distribution: the inheritance right flows down through the family line rather than being redistributed among the surviving children.
Without surviving children or grandchildren, inheritance moves upward to parents, then out to siblings, then to nieces and nephews, then to grandparents, and progressively to more distant relatives. If no relatives can be identified at all, the estate eventually escheats to the state of Washington.
Stepchildren, Half-Siblings, and Omitted Children
Unadopted stepchildren have no automatic right to inherit under Washington’s intestate succession laws. Only legal adoption creates inheritance rights. Foster children are in the same position. This is the biggest trap for blended families: a stepparent who dies without a will and never formally adopted their stepchildren leaves those children nothing under intestate succession, no matter how close the relationship was.
Half-blood relatives, by contrast, inherit on equal footing with whole-blood relatives in most situations. A half-sibling takes the same share a full sibling would. The narrow exception is property inherited from a specific ancestor: relatives outside that ancestor’s bloodline can be excluded from that particular property.6Washington State Legislature. RCW 11.04 – Descent and Distribution
A child born or adopted after a will is signed, and not mentioned in it, may still be entitled to a share equal to what they would have received under intestate succession. Washington’s pretermitted heir statute protects children who were accidentally omitted. If the will clearly shows an intent to exclude the child, the statute does not apply.
Who Can Sue for Wrongful Death
When someone dies because of another person’s negligence or wrongful act, Washington law limits who can benefit from a wrongful death lawsuit. First priority goes to the surviving spouse or domestic partner and the deceased’s children, including stepchildren. Only if none of those beneficiaries exist can the deceased’s parents or siblings recover.7Washington State Legislature. Washington Code 4.20.020 – Wrongful Death – Beneficiaries of Action Notice that stepchildren appear here, unlike in intestate succession.
A separate survival action lets the personal representative recover damages for pain, anxiety, and emotional distress the deceased experienced before death. Those damages go to the same beneficiaries listed in the wrongful death statute.8Washington State Legislature. Washington Code 4.20.046 – Survival of Actions The personal representative can also recover economic losses on behalf of the estate itself. In practice, both claims are usually pursued together.
Who Serves as Personal Representative
Probate is required when the deceased owned assets solely in their own name without a designated beneficiary. If there is a will, the court appoints the executor named in it. If the will names none, or there is no will at all, the court appoints an administrator, typically the closest next of kin willing to serve. Initial superior court filing fees generally run between $110 and $230 depending on the county.
The Small Estate Affidavit
Formal probate can be skipped entirely for smaller estates. If the deceased’s probate estate (excluding the surviving spouse’s community property share) is $100,000 or less, an heir can collect assets by filing a small estate affidavit at least 40 days after the date of death, confirming that no probate case has been filed or is pending.9Washington State Legislature. Washington Code 11.62.010 – Disposition of Personal Property, Debts by Affidavit, Proof of Death For modest estates, this saves considerable time and money.
When Next of Kin Disagree
Conflicts among relatives over inheritance, guardianship, or remains are common enough that Washington built a dedicated framework for them.
Will Contests
An interested party challenging a will has four months from the date the will is admitted to probate to file a petition, and 90 days from filing to personally serve the personal representative. Missing either deadline kills the challenge.10Washington State Legislature. Chapter 11.24 RCW – Will Contests Most contests turn on undue influence, fraud, or lack of mental capacity at signing. A successful challenge sends the estate back to a prior valid will or to intestate succession.
TEDRA Agreements
Washington’s Trust and Estate Dispute Resolution Act gives families a way out of full litigation. Under RCW 11.96A, parties to an estate or trust dispute can sign a written nonjudicial agreement that resolves the matter without trial. Once signed by all parties, the agreement is binding and conclusive on everyone with an interest in the estate or trust.11Washington State Legislature. Chapter 11.96A RCW – Trust and Estate Dispute Resolution Act
The agreement must be in writing, signed by all parties, and must identify the specific dispute being resolved. A special representative can sign for a party who is a minor, incapacitated, or unreachable, though the court may review whether that person’s interests were adequately protected. Filed with the court within 30 days of execution, the agreement carries the same weight as a final court order.
Heirs who believe a personal representative has mismanaged the estate can also petition the court directly to remove the representative or demand a formal accounting. The deadlines and procedural requirements on any of these disputes are tight, so legal counsel is worth involving early rather than after positions have hardened.