Washington State does not recognize common law marriage and has not since 1892. Couples who live together in Washington, regardless of duration, cannot establish a common law marriage within the state. However, Washington courts recognize common law marriages validly formed in other states like Colorado, Texas, Iowa, and Kansas. For long-term unmarried couples seeking to divide property, Washington provides the Committed Intimate Relationship (CIR) doctrine, which allows courts to distribute property acquired during the relationship using principles similar to divorce proceedings.
Author: Antonio G. Jimenez, Esq. Credentials: Florida Bar No. 21022 | Covering Washington divorce law
Key Facts Table
| Category | Details |
|---|---|
| Common Law Marriage | Not recognized (abolished 1892) |
| Alternative Doctrine | Committed Intimate Relationship (CIR) |
| Filing Fee | $314-$364 depending on county |
| Waiting Period | 90 days for divorce proceedings |
| Residency Requirement | None (must be resident at filing) |
| Property Division | Community property state |
| CIR Property Standard | Just and equitable distribution |
| Spousal Support for CIR | Not available |
Washington Does Not Recognize Common Law Marriage
Washington abolished common law marriage in 1892, making it one of the earliest states to eliminate this form of marriage recognition. Under Washington law, couples cannot become legally married simply by living together, regardless of whether they cohabit for 5, 15, or 50 years. This means unmarried couples in Washington do not automatically receive the same legal rights and protections as married couples, including inheritance rights, spousal support eligibility, and community property division under RCW 26.16.030.
The practical impact of this legal reality affects thousands of Washington residents. According to the U.S. Census Bureau, approximately 8% of Washington households include unmarried partners, representing over 250,000 couples statewide. These couples face significant legal disadvantages compared to married couples when relationships end, including no automatic right to divide property, no claim to spousal maintenance, and no inheritance rights without a will.
Washington courts have consistently upheld this position. In landmark cases like Connell v. Francisco (127 Wn.2d 339, 898 P.2d 831 [1995]), the Washington Supreme Court explicitly acknowledged that while the state does not recognize common law marriage, it must still provide some mechanism for addressing property rights when long-term unmarried relationships end. This recognition led to the development of the Committed Intimate Relationship doctrine as an alternative legal framework.
States That Recognize Common Law Marriage in 2026
Washington will recognize a common law marriage validly formed in another state under the principle of comity, meaning couples who established legal common law marriages elsewhere can divorce in Washington courts. As of 2026, only seven states plus the District of Columbia still recognize common law marriage: Colorado, Iowa, Kansas, Montana, New Hampshire (for inheritance purposes only), South Carolina, Texas, and Utah. Each state has specific requirements that must be met for a valid common law marriage.
Texas requires couples to either file a Declaration of Informal Marriage with the County Clerk or establish three elements: (1) agreement to be married, (2) cohabitation within Texas, and (3) representation to others that they are married. Colorado requires couples to mutually consent to marriage and hold themselves out publicly as married, with community recognition as a key factor. Kansas Statute 23-2502 requires both parties to be at least 18 years old, have present capacity to marry, and publicly present themselves as husband and wife.
If you established a valid common law marriage in one of these states before moving to Washington, you would need to file for divorce in Washington Superior Court just like any legally married couple. The filing fee ranges from $314 to $364 depending on the county, with King County, Pierce County, and Snohomish County charging $314 as of March 2026. You must also comply with Washington's 90-day mandatory waiting period under RCW 26.09.030.
Committed Intimate Relationship Doctrine Explained
The Committed Intimate Relationship (CIR) doctrine is Washington's legal framework for protecting unmarried partners who acquire property during long-term relationships. Established through case law rather than statute, CIR allows courts to divide property acquired during an unmarried relationship using standards similar to those applied in divorce proceedings. The doctrine evolved from cases like Connell v. Francisco and In re Pennington (142 Wn.2d 592) to prevent unjust enrichment when unmarried couples separate after building shared lives together.
Washington courts examine five primary factors when determining whether a Committed Intimate Relationship exists. First, continuity of cohabitation looks at whether the couple maintained a stable, shared residence. Second, duration of the relationship considers how long the couple lived together, though no minimum time period is required. Third, purpose of the relationship examines whether the couple formed their partnership for companionship, intimacy, and mutual support. Fourth, pooling of resources and services evaluates whether the couple combined finances, shared expenses, or contributed jointly to property acquisition. Fifth, intent of the parties considers evidence of commitment such as shared surnames, joint accounts, or presenting themselves as a couple to the community.
No single factor is determinative, and courts examine the totality of circumstances in each case. Courts have found CIRs in relationships as short as two years where couples quickly established marriage-like partnerships, while declining to find CIRs in longer relationships where key elements were missing. The burden of proving a CIR exists falls on the party seeking property division, and this determination must be made through court proceedings rather than automatic recognition.
Property Division in Committed Intimate Relationships
Property acquired during a Committed Intimate Relationship is divided using a just and equitable standard similar to the approach used in divorce cases under RCW 26.09.080. Washington courts apply a rebuttable presumption that property acquired during the relationship belongs to both parties, treating it similarly to community property. This means that houses purchased, bank accounts accumulated, and assets acquired while living together may be subject to division regardless of whose name appears on the title.
The Connell v. Francisco case established the current framework for CIR property division. The Washington Supreme Court held that property which would have been characterized as community property had the couple been married is subject to just and equitable distribution by the trial court. However, property owned before the relationship began (analogous to separate property in marriage) remains with its original owner and is not subject to division. This protects individuals who bring significant assets into relationships while still ensuring fair treatment of property accumulated together.
However, CIR property division has significant limitations compared to divorce. Courts can only divide property acquired during the relationship, not separate property owned before the relationship began. Additionally, debt division in CIR cases follows the same principles as property division, meaning joint debts acquired during the relationship may be allocated between both parties. The court considers factors like each party's financial circumstances, contributions to property acquisition, and future earning capacity when making equitable distribution decisions.
Major Differences Between Divorce and CIR Dissolution
Unmarried partners in a Committed Intimate Relationship face several significant legal disadvantages compared to married couples going through divorce. The most substantial difference involves spousal maintenance (alimony). Under Washington law, courts cannot award spousal support to partners in a CIR, regardless of income disparity or relationship duration. This means a partner who sacrificed career advancement to support the household has no legal claim to post-separation support, unlike in divorce proceedings governed by RCW 26.09.090.
Attorney fee awards represent another critical difference. In divorce proceedings, Washington courts may order one spouse to pay the other's attorney fees based on financial circumstances. This protection does not extend to CIR cases, meaning both parties must cover their own legal costs regardless of income differences. For a lower-earning partner, this can create significant barriers to pursuing property claims, as CIR litigation can cost $10,000 to $50,000 or more in attorney fees.
| Factor | Divorce | CIR Dissolution |
|---|---|---|
| Property Division | Yes (community property) | Yes (community-like property) |
| Spousal Maintenance | Yes (under RCW 26.09.090) | No |
| Attorney Fee Awards | Yes | No |
| Inheritance Rights | Automatic | None without will |
| Social Security Benefits | Eligible after 10+ years | Never eligible |
| Filing Fee | $314-$364 | $314-$364 (same civil filing) |
| Court Process | Dissolution proceeding | Civil lawsuit |
| Health Insurance | COBRA coverage available | No coverage rights |
How to File for Property Division After a CIR Ends
Ending a Committed Intimate Relationship and dividing property requires filing a civil lawsuit in Washington Superior Court, not a divorce petition. The filing fee ranges from $314 to $364 depending on the county, identical to divorce filing fees as of March 2026. Unlike divorce, which has its own statutory framework under RCW Chapter 26.09, CIR property division follows general civil procedure rules and requires proving the existence of a CIR before the court will consider property claims.
The process typically begins with filing a complaint in Superior Court alleging the existence of a Committed Intimate Relationship and requesting equitable distribution of property. The complaint should identify the approximate dates of cohabitation, describe the nature of the relationship, and list property acquired during the relationship that should be divided. The responding party has 20 days to file an answer, and the case then proceeds through discovery where both parties exchange financial information and evidence regarding the CIR factors.
Cases that cannot be resolved through negotiation proceed to trial, where the court first determines whether a CIR existed by examining the five Pennington factors. If a CIR is established, the court then identifies property subject to division and makes equitable distribution decisions. The entire process typically takes 6 to 18 months depending on case complexity, court schedules, and whether parties can reach agreements. Mediation is often recommended and can reduce both timeline and costs compared to full litigation.
Inheritance and Estate Planning for Unmarried Couples
Unmarried partners in Washington have no automatic inheritance rights, even after decades of cohabitation. The Washington Supreme Court has explicitly held that a surviving unmarried partner cannot be considered a surviving spouse under Washington's intestate succession laws. This means that without a valid will or trust, a deceased partner's estate passes entirely to blood relatives, potentially leaving a surviving partner with nothing after a lifetime together.
Proper estate planning is essential for unmarried couples seeking to protect each other. At minimum, couples should execute wills naming each other as beneficiaries. More comprehensive planning may include revocable living trusts to avoid probate, beneficiary designations on retirement accounts and life insurance policies, healthcare directives granting decision-making authority, and powers of attorney for financial matters. These documents cost approximately $1,500 to $5,000 when prepared by an estate planning attorney but provide crucial protections.
Joint tenancy with right of survivorship offers another option for real property. When property is held in joint tenancy, the surviving owner automatically receives full ownership upon the other's death, bypassing probate entirely. However, this arrangement has gift tax implications and may not be appropriate in all situations. Consulting with an estate planning attorney who understands the unique challenges facing unmarried couples in Washington is strongly recommended.
Protecting Your Rights in an Unmarried Relationship
Unmarried couples in Washington can take proactive steps to protect their interests without relying solely on the CIR doctrine. Cohabitation agreements, similar to prenuptial agreements for married couples, allow partners to define property rights, expense sharing, and separation procedures in advance. These contracts are generally enforceable in Washington courts and provide clarity that avoids expensive litigation if the relationship ends.
A well-drafted cohabitation agreement should address several key areas. Property ownership provisions specify how assets acquired during the relationship will be titled and divided upon separation. Expense sharing clauses define how housing costs, utilities, and other bills will be split. Debt allocation provisions prevent one partner from being responsible for the other's individual debts. Dispute resolution mechanisms, such as mandatory mediation, can reduce conflict if separation occurs. Cohabitation agreements typically cost $1,500 to $3,000 when prepared by a family law attorney.
Maintaining clear financial records throughout the relationship also protects both parties. Keeping separate bank accounts alongside any joint accounts, documenting contributions to major purchases, and retaining receipts for significant expenses can all provide crucial evidence if property division becomes necessary. Written agreements regarding specific purchases, even informal emails or text messages, can establish intent and prevent disputes about ownership.
Common Law Divorce FAQs for Washington Residents
Can I get a common law divorce in Washington if we lived together for 10 years?
No, Washington does not recognize common law marriage regardless of relationship duration. Living together for 10 years does not create a marriage under Washington law because the state abolished common law marriage in 1892. However, you may qualify as a Committed Intimate Relationship under the Pennington factors, which would allow court-supervised property division of assets acquired during your relationship.
Does Washington recognize common law marriages from other states?
Yes, Washington recognizes common law marriages validly established in states that permit them, including Colorado, Iowa, Kansas, Montana, South Carolina, Texas, and Utah. If you formed a valid common law marriage in one of these states, you can file for divorce in Washington Superior Court with the standard $314-$364 filing fee and must complete the mandatory 90-day waiting period under RCW 26.09.030.
What is a Committed Intimate Relationship in Washington?
A Committed Intimate Relationship (CIR) is a stable, marriage-like relationship where both parties cohabit knowing they are not legally married. Washington courts examine five factors to determine CIR status: continuity of cohabitation, duration of relationship, purpose of relationship, pooling of resources, and intent of parties. The CIR doctrine allows property division using equitable distribution principles similar to divorce.
Can I get alimony after ending a Committed Intimate Relationship?
No, spousal maintenance (alimony) is not available in CIR cases under Washington law. The Washington Supreme Court in Connell v. Francisco explicitly held that maintenance awards are limited solely to married couples. This remains one of the most significant disadvantages of unmarried cohabitation compared to marriage, regardless of relationship duration or income disparity between partners.
How is property divided when a Committed Intimate Relationship ends?
Property acquired during a CIR is divided using a just and equitable standard under principles similar to RCW 26.09.080. Courts presume property acquired during the relationship belongs to both parties. However, unlike divorce, only property acquired during the relationship can be divided, separate property remains with its original owner, and courts cannot award attorney fees to either party.
What are the filing requirements to divide property after a CIR?
You must file a civil lawsuit in Washington Superior Court where one party resides. The filing fee is $314-$364 depending on county (as of March 2026). Your complaint must allege the existence of a CIR, identify property to be divided, and provide evidence supporting the five CIR factors. The responding party has 20 days to answer, and cases typically take 6-18 months to resolve.
Do unmarried partners have inheritance rights in Washington?
No, unmarried partners have zero automatic inheritance rights in Washington, even after decades of cohabitation. The Washington Supreme Court has ruled that surviving unmarried partners cannot be considered surviving spouses under intestate succession laws. Without a valid will naming your partner as beneficiary, your estate passes entirely to blood relatives regardless of relationship duration.
How can unmarried couples protect themselves legally in Washington?
Unmarried couples should execute cohabitation agreements defining property rights and separation procedures ($1,500-$3,000 for attorney preparation). Essential protections include wills naming each other as beneficiaries, healthcare directives, powers of attorney, and beneficiary designations on retirement accounts and life insurance. Joint tenancy ownership of property provides automatic survivorship rights.
What is the difference between divorce filing and CIR property division?
Divorce follows statutory procedures under RCW Chapter 26.09 with established rights to spousal maintenance, attorney fees, and community property division. CIR property division is a civil lawsuit requiring proof that a CIR existed before addressing property claims. CIR cases cannot award maintenance or attorney fees and can only divide property acquired during the relationship.
How long does it take to divide property after a Committed Intimate Relationship?
CIR property division cases typically take 6 to 18 months from filing to resolution. Factors affecting timeline include case complexity, court schedules, whether parties reach settlement agreements, and volume of property requiring division. Mediation can significantly reduce both timeline and costs compared to full litigation, with many cases settling within 3-6 months when parties engage in good-faith negotiation.
When to Consult a Washington Family Law Attorney
Navigating property rights after an unmarried relationship ends requires experienced legal guidance. Washington family law attorneys who handle CIR cases can evaluate whether your relationship meets the five-factor test, identify property subject to division, and estimate realistic outcomes based on your circumstances. Initial consultations typically cost $150-$350 and provide valuable insight into your legal options before committing to litigation.
Professional legal assistance becomes especially important when significant assets are involved, when one party disputes the existence of a CIR, or when children were born during the relationship. Child custody and support follow the same statutory framework (RCW Chapter 26.09) regardless of whether parents were married, but property division requires proving CIR status first. An experienced attorney can coordinate both issues efficiently while protecting your parental rights and financial interests.
Fee arrangements vary among Washington family law attorneys. Some charge hourly rates of $250-$500 per hour, while others offer flat fees for specific services or limited scope representation options. Because CIR cases cannot result in attorney fee awards from the other party, understanding total cost exposure before proceeding is essential. Legal aid organizations may provide assistance for lower-income individuals, and some attorneys offer payment plans for qualified clients.