California 30-Day Eviction Notice: Just Cause, Delivery, and Defenses

A California 30-day eviction notice is the written notice a landlord uses to end a month-to-month tenancy when the tenant has lived in the unit for less than one year. It tells the tenant the tenancy is ending and sets the date by which they must move out. Under California Civil Code § 1946.1, once a tenant has been in the unit for a year or more, the required notice stretches to 60 days instead.¹ The notice is only the first step. If the tenant doesn’t leave, the landlord has to go to court, and small mistakes on the notice or in how it’s served can send everyone back to the beginning.

When 30 Days Is the Right Length

The rule turns on how long the tenant has lived in the unit, counted as continuous residence rather than the current lease term. Less than one year means 30 days. One year or more means 60 days.¹

There is one narrow exception that lets a landlord use a 30-day notice even on a longer tenancy: the property is in escrow to be sold to a natural-person buyer who intends to live in the home for at least a year, the notice is given within 120 days of escrow opening, and the landlord has not used this shortcut before with the same tenant.¹

When the Landlord Also Needs a Reason

Length of notice is one question. Whether the landlord needs a reason at all is a separate one, and it changes the answer for most California tenants after 12 months in the unit. Under the Tenant Protection Act (AB 1482), covered landlords cannot end a tenancy without stating a legally recognized just cause once the tenant has lived there for at least a year.²

At-Fault and No-Fault Reasons

At-fault reasons involve something the tenant did: not paying rent, violating a material lease term after written warning, creating a nuisance, criminal activity on the property, or unauthorized subletting. For most of these, the landlord has to give the tenant a chance to fix the problem before terminating.²

No-fault reasons have nothing to do with the tenant: the owner or an immediate family member moving in, withdrawing the unit from the rental market, or complying with a government order to vacate. In no-fault cases, the landlord must provide relocation assistance equal to one month of rent, paid within 15 calendar days of serving the notice, or waive the final month of rent instead. Skipping that payment is a defense the tenant can raise in court to defeat the eviction.²

Properties Exempt From Just Cause

Not every rental falls under AB 1482. Landlords of exempt properties can still use a 30-day notice to end a short-term tenancy without stating a reason. The main exempt categories are:

Single-family homes and condos that are separately titled, where the owner is not a corporation, REIT, or LLC with a corporate member. The owner must also deliver a specific written notice to the tenant stating the property is exempt; without that written notice, the exemption doesn’t apply.²
Housing that received its certificate of occupancy within the past 15 years. The window rolls forward, so a 2012 building would lose the exemption in 2027.
Owner-occupied duplexes where the owner has lived in one unit since the tenancy began.
Units where the tenant shares a kitchen or bathroom with the owner living on-site.

AB 1482 is currently set to expire on January 1, 2030. Local ordinances in roughly 39 California cities layer additional rules on top of state law, and those can be stricter than AB 1482.

What the Notice Has to Say

A 30-day notice missing required information can be invalidated by a judge, which forces the landlord to start the clock over. Every notice should contain:

The full name of every adult tenant in the unit.
The complete property address, including any apartment or unit number.
The termination date, calculated as 30 days from the date of service.
The specific just cause reason, if the property is covered by AB 1482.³
The landlord’s or authorized agent’s signature and the date.

Wrong names, a missing tenant, or a miscalculated end date are among the most common defects that lead courts to toss a notice.⁴ Standardized forms from the California Apartment Association and legal aid organizations help avoid technical mistakes.

How the Notice Has to Be Delivered

California Code of Civil Procedure § 1162 recognizes three methods of service. Using the wrong one, or failing to document the right one, gives the tenant grounds to challenge the eviction.

Personal service: handing the notice directly to the tenant. This is the cleanest method and the hardest to dispute.
Substituted service: if the tenant can’t be found at home or work, leaving the notice with another adult at one of those places and mailing a copy to the tenant’s home.
Posting and mailing: if no suitable adult can be reached after reasonable attempts, posting the notice in a visible spot on the property (usually the front door) and mailing a copy to the tenant at that address.⁵

The person who serves the notice should be an adult other than the landlord, since they may need to testify about when and how they delivered it. A proof of service documenting the date, time, and method is essential. Professional process servers in California typically charge somewhere between $50 and $150 depending on location and urgency.

Counting the 30 Days

The count starts the day after delivery, not the day of delivery. A notice served on March 1 makes March 2 day one and March 31 the 30th day. If that final day falls on a weekend or court holiday, the deadline extends to the next business day.⁶ When the notice goes out by posting and mailing rather than personal delivery, courts sometimes add extra days for mail time. Cutting the timeline even by a day can get an unlawful detainer case dismissed.

If the Tenant Doesn’t Move Out

Once the 30 days have run, the landlord’s only lawful way to remove the tenant is to file an unlawful detainer lawsuit in California Superior Court. There is no shortcut around that. Filing fees run from $240 for claims up to $10,000, to $385 between $10,000 and $25,000, and $435 above $25,000.⁷

After the complaint is filed, the court issues a summons that is served on the tenant. The tenant then has 10 court days (weekends and court holidays excluded) to file a written response.⁸ No response, and the landlord can seek a default judgment. If the tenant does respond, either side can request a trial, which the court must set within 20 days.⁹ When the landlord wins, the court issues a writ of possession and the county sheriff posts a notice to vacate, usually giving the tenant about five more days before the lockout.¹⁰

Defenses a Tenant Can Raise

Tenants on the receiving end of a 30-day notice have real options in court, and landlords should know what they’re likely to face. The defenses that come up most often include:

Defective notice: wrong names, wrong address, miscalculated date, or improper service.
No valid just cause: the property is covered by AB 1482 and the landlord either gave no reason or gave one that doesn’t qualify.
Missing relocation assistance: a no-fault eviction where the landlord didn’t pay or waive one month’s rent.
Retaliation: the notice came within 180 days of the tenant reporting a habitability problem, filing a complaint with a government agency, or exercising another legal right. California law creates a presumption of retaliation during that window, and the landlord has to prove the eviction was for an independent, legitimate reason.¹¹
Discrimination based on race, religion, sex, disability, familial status, national origin, or another protected characteristic under the Fair Housing Act or California fair housing law.
Uninhabitable conditions the landlord has failed to repair.¹²

A successful defense can get the case dismissed. Even a partial win can buy significant time, because dismissal means the landlord has to fix the problem and restart the notice period from scratch.

Lockouts and Utility Shutoffs Are Illegal

Changing the locks, removing doors, shutting off electricity or water, or putting a tenant’s belongings on the curb is not a shortcut around the 30-day notice and court process. California Civil Code § 789.3 bars all of it. A tenant subjected to this kind of self-help eviction can sue for actual damages plus a $100 penalty for every day the conduct continues, along with attorney’s fees, and can get a court order restoring access and utilities. The exposure almost always exceeds what the formal process would have cost. A landlord who shuts off water for two weeks, for example, is already looking at a $1,400 statutory penalty before actual damages are counted.

1
California Legislative Information. California Civil Code 1946.1 – Hiring of Real Property
2
California Legislative Information. California Civil Code 1946.2
3
California Legislative Information. AB-1482 Tenant Protection Act of 2019
4
Judicial Branch of California. Types of Eviction Notices – Landlords
5
California Legislative Information. California Code of Civil Procedure 1162
6
Judicial Branch of California. If You Get a Notice
7
Superior Court of California. Statewide Civil Fee Schedule
8
California Legislative Information. California Code of Civil Procedure 1167
9
California Legislative Information. California Code of Civil Procedure 1170.5
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Judicial Branch of California. Eviction Cases in California
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California Legislative Information. California Civil Code 1942.5
12
Judicial Branch of California. Eviction Defenses