California Civil Code 1161: Notices, Just Cause, and Defenses

California Code of Civil Procedure Section 1161 is the state’s eviction statute. It lists the specific circumstances under which a tenant’s continued occupancy becomes unlawful and sets out the written notice a landlord must serve before filing an unlawful detainer case in court. It is often searched as “California Civil Code 1161,” but the section actually lives in the Code of Civil Procedure, not the Civil Code. That distinction matters when you’re pulling up the text, citing it in a notice, or looking for the correct subdivision.¹

The statute covers four broad grounds: holding over after the tenancy ends, nonpayment of rent, breach of a lease term, and serious misconduct like waste, nuisance, unauthorized subletting, or illegal use of the property. Each ground carries its own notice requirement, and a defect in the notice is one of the most common reasons eviction cases fail before they reach trial.

Holding Over After the Tenancy Ends

The first ground applies when a tenant stays past the end of their right to occupy. That includes a fixed-term lease that expires without renewal, a month-to-month tenancy the landlord has properly terminated, and an employee or agent who keeps the unit after their employment ends.²

For month-to-month tenants, the landlord has to serve a 30-day or 60-day written notice under Civil Code Section 1946.1 first. A tenant who has been in the unit for a year or more is entitled to 60 days. Only after that notice period runs does the tenant’s continued presence become unlawful.

This ground looks straightforward, but the just-cause law discussed below limits when it can actually be used against long-term tenants of covered properties.

Nonpayment of Rent

Unpaid rent is the ground landlords use most often. Before filing suit, the landlord must serve a three-day notice to pay rent or quit. The notice has to include:³

The exact amount of past-due rent. Late fees, utility charges, deposits, and other costs cannot be added in.
Payment instructions with a physical address, the days and hours payment will be accepted, and whether mail is acceptable.
The tenant’s full name and the rental property address.

The tenant then has three days to pay in full or move out. Saturdays, Sundays, and court holidays don’t count.¹ Demand a dollar more than what’s actually owed, or bundle in a charge the statute doesn’t permit, and a court can invalidate the entire notice.

Partial Payments

Under CCP 1161.1, a landlord who accepts partial rent after serving the three-day notice can still proceed, but only for the remaining balance, and the complaint has to state the difference between what was demanded and what was actually paid.⁴ If the landlord takes partial payment after the complaint is already filed, the landlord must give the tenant written notice that accepting the money doesn’t waive the right to possession. Without that written disclaimer, the payment becomes a strong defense.

Breach of a Non-Monetary Lease Term

When the violation is something other than unpaid rent, CCP 1161 splits breaches into two categories based on whether the problem can be fixed.

Curable Breaches

If the tenant can realistically correct the issue, the landlord serves a three-day notice to perform covenant or quit. Common examples are keeping a pet the lease prohibits, exceeding occupancy limits, or repeated noise problems. The notice has to describe the specific violation and give the tenant three days (again excluding weekends and court holidays) to fix it or leave.³ Fix the problem in time and the tenancy continues.

Incurable Breaches

Some violations can’t be undone. Unauthorized subletting that has already happened, for instance, isn’t something a tenant can retroactively erase. For those, the landlord serves a three-day notice to quit with no cure option, and the tenant has three days to leave.⁵

Serious Misconduct Under Subdivision 4

CCP 1161 subdivision 4 covers the most severe tenant conduct and treats the lease as already terminated by the tenant’s own actions. It applies when the tenant:

Sublets or assigns the lease in violation of a provision prohibiting it
Commits waste, meaning significant damage that reduces the property’s value
Maintains a nuisance, meaning ongoing conduct that seriously disturbs neighbors or endangers health and safety
Uses the property for illegal purposes, such as drug manufacturing or sales

Because the tenant has already effectively ended the lease, the landlord serves a three-day notice to quit with no chance to cure.⁶ The statute expands “nuisance” by reference to Civil Code Sections 3482.8, 3485, and 3486, which reach drug activity and criminal street gang activity on the property.

How the Notice Must Be Served

A correctly written notice fails if it’s served the wrong way. CCP 1162 lists three permitted methods for residential tenants, in order of priority:⁷

Personal delivery, meaning handing the notice directly to the tenant. Cleanest and hardest to challenge.
Substituted service, used if the tenant isn’t home or at work. The notice is left with a responsible adult at either location, and a second copy is mailed to the tenant’s home.
Posting and mailing, used only when the tenant can’t be found and no responsible adult is available. The notice is posted somewhere visible on the property and mailed to the tenant at the property address.

Skipping to posting without first attempting personal delivery gives the tenant an opening to argue the notice never really reached them. Subtenants in the unit also have to be served.

The Just-Cause Limit That Sits On Top of 1161

Since January 1, 2020, California Civil Code Section 1946.2, the Tenant Protection Act (originally AB 1482), has restricted when landlords of covered properties can terminate a tenancy at all. Once a tenant has occupied a unit continuously for 12 months, the landlord needs “just cause” to end the tenancy, and the written termination notice must state that just cause.⁸

At-Fault Just Cause

These grounds mirror CCP 1161: unpaid rent, breach of a material lease term, nuisance, waste, unauthorized subletting, illegal use, criminal activity directed at the owner or the owner’s agent, and refusing to allow lawful entry. A tenant who refuses to sign a lease renewal on substantially similar terms after a written request also falls here.

No-Fault Just Cause

When the reason isn’t tenant misconduct, the landlord has a narrower menu: owner or qualifying family move-in for at least 12 months, permanent withdrawal from the rental market, compliance with a government or court order to vacate, or demolition or substantial remodel. For any no-fault eviction, the landlord has to either pay the tenant relocation assistance equal to one month’s rent within 15 calendar days of serving the notice, or waive the final month of rent in writing. Skip that step and the termination notice is defective.

Not every rental is covered. Exemptions include single-family homes owned by a natural person (with written notice to the tenant), housing built within the last 15 years, owner-occupied duplexes, and certain nonprofit and institutional housing. Many California cities layer their own rent control and just-cause ordinances on top of state law, and those local rules can be stricter, so it’s worth checking city rules separately.

Filing the Unlawful Detainer

Once the notice period ends without cure or move-out, the landlord files an unlawful detainer complaint and summons in the Superior Court of the county where the property is located, and both documents have to be formally served on the tenant.

The tenant’s response deadline depends on how they were served. Personal service gives the tenant 10 court days to file an answer. Substituted service or posted service extends it to 20 calendar days after the mailed copy goes out. A tenant served through the Safe at Home program gets 15 court days.⁹ The 10-court-day figure for personal service doubled from the previous five-day window under a law effective January 1, 2025. That same law also bars court clerks from entering a default judgment sooner than three court days after the landlord files proof of service.

Miss the deadline and the landlord can request a default judgment, which lets the judge decide the case on the complaint alone with no trial for the tenant.

After Judgment

Winning does not let the landlord change the locks. The landlord has to get a writ of possession from the court and deliver it to the sheriff or marshal. The levying officer serves the writ on an occupant, and the tenant then has five days to leave voluntarily. If the tenant is still there after five days, the levying officer physically removes the occupants and restores possession to the landlord.¹⁰ Self-help evictions, meaning shutting off utilities, taking off doors, or changing locks without going through this process, are illegal in California and expose the landlord to significant liability.

Defenses That Can Block a 1161 Case

Even a well-executed notice and complaint can fail if the tenant has a defense.

Retaliation

Civil Code 1942.5 bars landlords from evicting in retaliation for a tenant’s exercise of legal rights. If the tenant complained to the landlord about habitability, reported conditions to a government agency, or took part in a tenant organization, the landlord cannot file for eviction, raise rent, or cut services within 180 days of that protected activity.¹¹ A filing inside that window is presumed retaliatory, and the burden shifts to the landlord to prove otherwise. The tenant has to be current on rent for the protection to apply.

Discrimination and Military Status

The federal Fair Housing Act prohibits evictions motivated by race, color, national origin, religion, sex, familial status, or disability, and a legitimate CCP 1161 ground used as a pretext for discrimination can be challenged. Active-duty servicemembers get extra protection under the Servicemembers Civil Relief Act, which bars eviction without a court order when the monthly rent falls below an annually adjusted threshold and lets courts stay proceedings for at least 90 days or adjust lease terms.¹²

1
California Legislative Information. California Code of Civil Procedure 1161 – Unlawful Detainer
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California Legislative Information. California Code of Civil Procedure 1161
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Judicial Branch of California. Types of Eviction Notices Landlords
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California Legislative Information. California Code of Civil Procedure CCP 1161.1
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California Courts. Types of Eviction Notices for Tenants
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California Legislative Information. California Code of Civil Procedure 1161
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California Legislative Information. California Code of Civil Procedure 1162
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California Legislative Information. California Civil Code 1946.2
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California Courts. Fill Out an Answer Form in an Eviction Case
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California Legislative Information. California Code of Civil Procedure 715.010-715.050
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California Legislative Information. California Civil Code 1942.5
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Office of the Law Revision Counsel. 50 USC 3951 Evictions and Distress