How to Remove a Squatter in Washington: The Legal Process for Owners

In Washington, once someone has settled into your property and started living there, you generally cannot have them hauled out by simply calling 911. Removing a settled squatter is almost always a civil court matter handled through the Superior Court in the county where the property sits, using either an unlawful detainer action (Washington's name for eviction, governed by RCW 59.12 and the Residential Landlord-Tenant Act, RCW 59.18) or, for someone who never had any tenant relationship, an ejectment action. For context, Washington's adverse-possession period is 10 years of open, continuous, hostile occupancy (or as little as 7 years with color of title plus payment of property taxes) before an occupant could even attempt to claim legal ownership. Because these rules change and some cities and counties layer on extra protections, confirm the current statute or talk to a Washington landlord-tenant attorney before you act.

Trespasser vs. squatter: why the difference matters

The single most useful thing to understand is the line police draw between a trespasser and a squatter.

• A trespasser is someone who just walked in, broke in, or is loitering with no claim to be there. This is a criminal matter, and Washington law enforcement can sometimes remove a true trespasser on the spot, especially if you catch it early.
• A squatter (or holdover occupant) has established occupancy: they sleep there, keep belongings there, maybe receive mail there, or claim a verbal lease or permission from a prior owner. The moment occupancy looks established, most Washington officers treat it as a civil dispute and decline to remove the person.

This frustrates owners, but officers are following the law. If they forcibly remove someone who turns out to have a colorable claim of tenancy, the city and the officer can be exposed to liability. So they tell you to go to court, and they are usually right.

Why Washington police often won't help

Washington's strong anti-self-help and tenant-protection framework means that determining who has a legal right to occupy a home is a judge's job, not a patrol officer's. An officer at the door cannot quickly verify a lease, sort out a family dispute, or decide whether the occupant is a tenant, a guest who overstayed, or a true intruder. When in doubt, they treat it as civil. Practically, that means:

• You typically need a court order and a sheriff's writ of restitution before anyone can be physically removed.
• Self-help is illegal. Changing the locks, shutting off utilities, removing doors, or hauling out belongings can expose you to damages under the Residential Landlord-Tenant Act, even against a squatter.

The correct legal process in Washington

The route depends on whether the occupant ever had any tenant-like relationship.

• Serve the proper notice. If there is any argument the person is a tenant or holdover, you generally must serve a written notice to vacate first. The type and timing depend on the situation; verify the current notice period for your facts.
• File an unlawful detainer in Superior Court. This is Washington's expedited eviction process. You file a summons and complaint, the occupant gets a short window to respond, and the court sets a hearing (often called a show-cause hearing).
• Use ejectment for pure squatters. If the occupant never had a lease or permission, an ejectment action (a suit to recover possession of real property) may be the cleaner path. A Washington attorney can tell you which fits.
• Get the writ of restitution. If you win, the court issues a writ, and only the county sheriff may carry out the physical removal.

Document everything: how the person got in, dates, photos, any communications, and proof of your ownership. Strong documentation that the occupant is not a tenant can speed things up considerably.

Adverse possession: the long-game risk

Owners worry a squatter will "own" the home just by staying. In Washington that bar is high. An adverse-possession claim generally requires 10 years of possession that is actual, open and notorious, exclusive, continuous, and hostile (without the owner's permission). With color of title and payment of the property taxes, the period can shrink to 7 years. A few months of squatting creates no ownership claim, but the lesson is to act promptly rather than let occupancy drag on for years.

When to get a lawyer or legal aid

Many owners handle a straightforward unlawful detainer themselves, but it is worth getting help when the occupant claims a lease, when there are habitability or retaliation defenses raised, when your city or county adds extra eviction protections, or when the person simply won't leave after losing. A Washington landlord-tenant attorney can make sure your notice and filing are correct the first time, since a single procedural mistake can force you to start over.

This article is general legal information, not legal advice. Washington landlord-tenant law changes and can have local exceptions, so confirm the current rules for your county or consult a Washington attorney before acting.