Quick answer: Yes, but who can do it, and how, depends on the roommate’s legal status. In Murrieta, CA, a master tenant can evict a subtenant, and an owner can evict tenants, almost always through written notice plus an unlawful detainer at the Southwest Justice Center. Co-tenants generally cannot evict each other, and only an owner-occupant renting to a single lodger has a narrower shortcut.
First, Pin Down What Kind of Roommate This Is
“Roommate” is not a legal category. California law cares about the relationship between the person in the room and whoever holds the right to possession. Murrieta’s larger single-family homes make shared housing common, and most roommate disputes fall into one of three buckets:
Subtenant. Your tenant (the “master tenant”) signed the lease with you and then rented a room to someone else. The subtenant’s landlord is the master tenant, not you.
Co-tenant. Two or more people signed the same lease with the owner. Each holds an equal right to possess the whole unit.
Lodger. You own the home, you live in it, and you rent a room to someone while keeping access to and control over the house.
A fourth group — the friend or relative who moved in and never paid — usually still requires notice and court in California. Police generally will not remove someone who claims to live at the property.
Who Can Evict Whom
Situation
Who can end the occupancy
Usual path
Master tenant and subtenant
The master tenant (as the subtenant’s landlord)
Proper notice, then an unlawful detainer
Owner and tenants who sublet without permission
The owner
Notice to the tenant (with a chance to cure where required), then an unlawful detainer naming all occupants
Co-tenant versus co-tenant
Neither, on their own
Only the owner can terminate, and generally by ending the tenancy under the lease
Owner-occupant and one lodger
The owner
Written notice; after it expires, the narrow single-lodger rule may apply
Owner-occupant and two or more lodgers
The owner
Ordinary notice and unlawful detainer
The Owner-Occupant With a Single Lodger
California carves out one meaningful exception. When an owner lives in the home and rents to just one lodger, Civil Code 1946.5 lets the owner end the arrangement with written notice, and once the notice period runs, the lodger who stays can be treated as a trespasser rather than a tenant. That can open the door to law enforcement help instead of a lawsuit. The exception is narrow and easy to lose: it applies only to an owner who actually lives in the home, only with a single lodger, and only with proper notice first. Rent a second room, move out yourself, or skip the notice, and you are back to the standard unlawful detainer. Because officers sometimes hesitate even when the rule applies, many Murrieta owners keep the court route ready as a backup.
Everyone Else Goes to Court — and Murrieta’s Courthouse Is Local
For subtenants, tenants, and multiple lodgers, the process is the normal one, and Murrieta owners have the advantage of filing close to home. Unlawful detainers for Murrieta, Temecula, Wildomar, Lake Elsinore, and Canyon Lake are heard at the Southwest Justice Center, 30755-D Auld Rd, Murrieta 92563; confirm current venue at riverside.courts.ca.gov. Riverside County requires electronic filing, and under the fee schedule effective January 1, 2026, the complaint costs $270 for demands of $10,000 or less. Two roommate-specific tips apply. Name every adult occupant you know about, and serve a Prejudgment Claim of Right to Possession with the summons so that an unnamed roommate cannot surface at the lockout and derail it. Once served, defendants have 10 court days to respond under AB 2347, plus 5 more if service was by mail or a substituted method. As of late 2026, an uncontested case runs about 5 to 9 weeks from notice to lockout. Our Murrieta eviction services page outlines the local process in full.
What Not to Do While You Wait
Frustration with a roommate is personal in a way most landlord disputes are not, and that is exactly when owners make costly mistakes. Changing the locks, removing the bedroom door, boxing up belongings, or shutting off utilities is illegal self-help regardless of unpaid rent. Under Civil Code 789.3, a lockout or utility shutoff exposes you to actual damages plus $100 per day (minimum $250), possible attorney fees, and a wrongful-eviction claim. Our earlier post on whether you can evict without going to court in Murrieta covers these penalties in detail.
Frequently Asked Questions
Can one co-tenant evict another co-tenant in Murrieta?
Generally no. Co-tenants who signed the same lease hold equal rights to the whole unit, so neither can serve the other an eviction notice. The owner can terminate the tenancy if a legal basis exists, which typically affects everyone on the lease. Co-tenants in conflict often negotiate a voluntary move-out or a new lease with the owner instead.
Does a roommate who never signed the lease have tenant rights?
Often, yes. A person who moved in, lives there, and pays rent to the master tenant is usually a subtenant with tenant protections against the master tenant. Even someone who never paid can require notice and an unlawful detainer to remove. The owner can include such occupants in an eviction and bind them through a Prejudgment Claim of Right to Possession.
What if my tenant moved in a roommate without permission?
Subletting against the lease is a recognized at-fault just cause under AB 1482. Because it can often be cured, the usual first step is a 3-day notice to perform covenants or quit, giving the tenant a chance to fix the violation. If it is not cured, the owner can file an unlawful detainer naming the tenant and the unauthorized occupant.
Can Murrieta police remove a roommate who stopped paying?
Usually not. Police generally decline to remove anyone claiming to live at the property and treat the matter as a civil dispute requiring a court order. The main exception is an owner-occupant with a single lodger whose written notice has expired. In every other roommate scenario, removal comes through an unlawful detainer judgment and a sheriff lockout.
Sort Out the Roommate Problem the Right Way
Roommate cases turn on details — who signed what, who lives where, and who paid whom. 951 Evictions helps landlords across Riverside and San Bernardino counties handle the process start to finish, from choosing the right notice to the sheriff’s lockout. Contact us to talk through your Murrieta situation.
This article is general information for California landlords, not legal advice. For advice on a specific situation, consult a California landlord-tenant attorney.