California Unlawful Detainer: Owner’s Process Guide

The short answer

An unlawful detainer is California’s summary court process for deciding the right to possession after a tenancy or occupancy has been lawfully terminated. The owner generally must first serve a legally sufficient notice, wait for the notice period to expire without compliance or surrender, file the current summons and complaint packet in the correct Superior Court, and have a nonparty properly serve each defendant.

The defendant ordinarily has 10 court days after personal service of the complaint to respond under Code of Civil Procedure section 1167. Other service methods alter when service is complete. If no response is filed, the owner may request default; default is not automatic. If the defendant answers, the case moves toward trial or settlement. A winning owner must obtain a judgment and writ of possession, then deliver the writ and required instructions to the sheriff. Only the levying officer—not the owner, manager, or a private locksmith—may complete the court-ordered lockout.

This page is an educational and triage guide. Law Laguna’s work centers on counseling, document and notice review, pre-filing strategy, negotiation, file preparation, and referral coordination. It does not promise that the firm will file or appear in an unlawful-detainer action.

What to do first

Before serving a termination notice

1. Confirm the exact property jurisdiction and every applicable state and local rule.
2. Identify the legal termination ground and whether it is curable.
3. Verify AB 1482 coverage, local just cause, relocation, right-to-return, registry, and city-filing requirements.
4. Audit the lease, ledger, communications, notices, repairs, accommodations, and resident history.
5. Preserve evidence before witnesses leave, messages disappear, or conditions change.
6. Review notice content, attachments, service method, and deadline calculation.

Before filing the complaint

1. Confirm that the notice fully expired and that the tenant did not timely cure, pay, surrender, or enter an agreement changing the plan.
2. Recheck amounts, dates, names, unit address, legal parties, and proof of service.
3. Check for post-notice rent acceptance, waiver, new agreements, bankruptcy, active emergency rules, or a local prerequisite.
4. Download current statewide and local forms from the court on the filing date.
5. Confirm the proper courthouse, filing method, local forms, fees, and standing orders.
6. Decide who will handle filed litigation before a deadline arrives.

What not to do

• Do not change locks, interrupt utilities, remove doors, or dispose of a resident’s belongings to force a move. Civil Code section 789.3 prohibits specified self-help conduct and authorizes damages and attorney’s fees.
• Do not copy a notice from an old file merely because the factual problem sounds similar.
• Do not file before the notice period expires.
• Do not include amounts that are not legally recoverable as rent in a notice to pay rent or quit.
• Do not serve the summons and complaint yourself.
• Do not treat substitute or posting service as interchangeable with personal service.
• Do not ask for default until every defendant’s response period has expired under the actual method of service.
• Do not schedule contractors, movers, or a new tenancy as if judgment and sheriff restoration dates are guaranteed.
• Do not use superseded Judicial Council or local forms.
• Do not assume an owner’s pre-litigation counsel has agreed to become counsel of record.

Facts and documents that matter

A litigation-ready owner file ordinarily includes:

• Current deed, management agreement, and authority to act.
• Complete lease, renewals, addenda, rules, and any translation.
• Tenant and authorized-occupant names, aliases, and contact information.
• A chronology of move-in, adult occupants, renewals, notices, payments, and material events.
• Full ledger and source records supporting every entry.
• The termination notice, attachments, and original proof of service.
• Evidence supporting the chosen ground: communications, photographs, videos, inspection reports, permits, witness information, police or agency records, invoices, and repair history.
• AB 1482 notices and the property-coverage analysis.
• Local registration, notice filing, relocation, permit, and right-to-return records.
• Habitability complaints, work orders, code inspections, accommodation requests, fair-housing communications, and retaliation-sensitive events.
• Settlement communications and any payment plan, surrender agreement, or accepted offer.
• The current court packet, filing receipt, issued summons, proofs of service, responses, orders, and deadline calendar.

A clean file makes the next decision easier and gives litigation counsel a usable record rather than a collection of disconnected documents.

Governing statewide framework

The principal statutes appear in the California unlawful-detainer chapter, Code of Civil Procedure sections 1159–1179a. The process below is a general residential framework, not a substitute for the current court rules or a case-specific litigation plan.

Stage 1: Select and serve the predicate notice

Code of Civil Procedure section 1161 addresses several grounds, including:

• Nonpayment of rent after a qualifying three-day notice.
• Failure to perform a lease covenant after a qualifying notice and opportunity to cure.
• Specified assignment, subletting, waste, nuisance, or unlawful use after a notice to quit.
• Holdover after the tenancy has lawfully ended.
• Failure to surrender after the tenant gave a qualifying notice or made a written surrender offer accepted by the owner.

For a three-day notice to pay rent or perform a covenant, Saturdays, Sundays, and judicial holidays are excluded from the statutory period. Other notices can use different counting rules. Section 1162 prescribes methods for serving specified predicate notices.

The Judicial Council explains that eviction notices are not court forms. The correct notice depends on the ground, tenancy, lease, property coverage, local law, and remedy sought.

Before serving a notice, also check:

• Civil Code section 1946.2 for statewide just cause.
• Civil Code section 1946.1 for qualifying periodic-tenancy termination notice periods and content.
• Local termination grounds, relocation, filing, registry, and anti-harassment law.
• Fair-housing, habitability, retaliation, emergency, subsidy, and bankruptcy issues.

Stage 2: Wait, verify, and reassess

The complaint should not be filed until the predicate notice has expired and the facts still support the selected theory. Before filing, determine whether the tenant:

• Paid or performed within a curable period.
• Vacated and returned possession.
• Made a partial payment the owner accepted.
• Entered a new payment, settlement, or surrender agreement.
• Filed a bankruptcy case.
• Raised facts that require a new legal analysis.

An invalid notice usually cannot be repaired by allegations in the complaint.

Stage 3: File the current court packet

The California Courts’ current eviction-form index identifies the basic statewide forms. A typical starting packet includes:

• SUM-130, Summons—Eviction, effective January 1, 2026 as of this review.
• UD-100, Complaint—Unlawful Detainer, effective July 1, 2026 as of this review.
• CM-010, Civil Case Cover Sheet.

Local forms, cover sheets, filing-location documents, e-filing rules, and standing orders may add to that list. Optional CP10.5, Prejudgment Claim of Right to Possession, can affect unnamed occupants and should be considered with litigation counsel rather than added automatically.

The complaint must align with the notice and the evidence. Review the named plaintiff, defendants, premises, tenancy, notice theory, service, rent claimed, forfeiture theory, just-cause allegations, local compliance, and requested relief before filing.

Current-form warning: Judicial Council forms changed materially in 2026. Do not host or use a cached packet. Verify the revision date of every form directly from the Judicial Council and the applicable court on the filing date.

Stage 4: Serve the summons and complaint

The plaintiff cannot serve the summons and complaint. The server must be an adult who is not a party. Each named defendant must be addressed through a legally permitted method.

The California Courts’ official service guide describes:

1. Personal service.
2. Substituted service plus mailing when its legal conditions are met.
3. Posting and mailing only after a judge authorizes it following the required attempts and showing.

The server completes a current proof of service, commonly POS-010, and the filed proof becomes part of the deadline record. Service defects can delay or defeat default and can create a motion to quash.

Stage 5: Calculate the response period

Section 1167 was amended effective January 1, 2025. After personal service, the defendant’s response is due within 10 days, excluding Saturdays, Sundays, and judicial holidays.

When service is completed by substituted service or court-authorized posting and mailing, the California Courts’ current guidance explains that service becomes complete 10 calendar days after mailing and the defendant then receives the 10-court-day response period. The practical deadline is therefore not calculated like personal service.

Do not rely on an older court, sheriff, or form page that still says five days. Use the current statute, current summons, current Judicial Council instructions, actual service record, and court calendar.

Stage 6A: No response—default path

When every applicable response period has expired without a response, the owner may request entry of default and a default judgment. The court must still review the papers. A defective notice, complaint, service, declaration, amount, military-status showing, local prerequisite, or form can prevent judgment.

Current forms and local checklists must be obtained on the request date. The statewide form set includes forms such as CIV-100, UD-110, UD-116, EJ-130, and other documents depending on the relief sought and current requirements. The Judicial Council added or revised unlawful-detainer judgment and stipulation forms effective January 1, 2026, including UD-110H, UD-110P, and UD-115. Do not infer which attachment applies without reviewing the current form instructions and case facts.

Stage 6B: Response—contested path

The most common responsive pleading is UD-105, Answer—Unlawful Detainer, which has a January 1, 2026 effective date as of this review. A defendant may instead file a motion or other response that requires immediate litigation analysis.

After an answer, either party may request trial using the current procedure, commonly including UD-150. Code of Civil Procedure section 1170.5 states that trial is to be held not later than the 20th day after a request to set, subject to the statute’s extension provisions. Actual scheduling, motion practice, jury issues, discovery, settlement, and court operations can affect the timeline. Do not promise a possession date from the statutory target.

Potential issues can include:

• Notice content, service, expiration, and waiver.
• Whether the amount demanded was rent and was accurately stated.
• Just-cause and local-law compliance.
• Habitability, repair, retaliation, discrimination, or accommodation defenses.
• Ownership, party, and standing questions.
• Proof of breach, nuisance, waste, unauthorized occupancy, or surrender.
• Acceptance of rent or a later agreement.
• Emergency, subsidy, or bankruptcy protections.

Effective January 1, 2026, Civil Code section 1946.3 permits a qualifying Social Security hardship affirmative defense in a residential nonpayment case. If the statutory evidence is established, the court must issue the prescribed stay. The provision does not erase the past-due rent and is scheduled for repeal January 20, 2029. The Judicial Council must adopt or modify implementing forms by January 1, 2027, so confirm the current forms before filing. The provision was enacted by AB 246.

Stage 7: Trial or settlement

At trial, the owner must prove the possession claim and satisfy the procedural and substantive requirements supporting it. A summary case is still litigation: admissible evidence, witnesses, objections, motions, local practice, jury rights, and a complete record matter.

Settlement can occur before or after filing. A workable agreement should address possession, dates, payments, releases, dismissal or judgment mechanics, breach, property condition, keys, personal property, and who bears which obligations. A stipulation that is unclear or unenforceable can create another dispute instead of ending the first one.

Stage 8: Judgment and writ of possession

If the plaintiff prevails, Code of Civil Procedure section 1174 governs possession judgment and related relief. The owner must obtain the current writ of possession and provide it, signed instructions, and the current fee or deposit to the appropriate sheriff.

A judgment does not authorize the owner to perform a lockout personally.

Stage 9: Sheriff notice and restoration of possession

The sheriff posts or serves a Notice to Vacate and later returns to restore possession if enforcement is not stayed. The California Courts’ post-trial guide describes a five-day Notice to Vacate. County instructions, fees, submission forms, office locations, and scheduling change and must be checked when the writ is delivered.

A bankruptcy stay, court stay, third-party claim of right to possession, or other order can pause enforcement. The owner should not direct a locksmith, movers, or a new resident to act until the levying officer has restored possession.

Stage 10: Personal property and post-possession file

Personal property remaining after restoration is governed by Civil Code sections 1980–1991 and related provisions in section 1174. Inventory, photographs, notices, storage, release, sale or disposal, and accounting should be handled as a separate statutory workflow.

Preserve the judgment, writ, sheriff receipt for possession, condition evidence, property inventory, deposit records, and final accounting.

Local overlay check

State forms are only the baseline. Filing location, mandatory local forms, e-filing, standing orders, trial-setting practice, sheriff instructions, and fees differ.

Orange County

• Orange County Superior Court unlawful detainer
• Orange County local rules and Rule 356
• Orange County court forms
• Orange County Sheriff Civil Bureau

The court’s unlawful-detainer page links its designation list, e-filing information, local forms, and Local Rule 356. The Sheriff’s current page supplies writ instructions, fees, and submission requirements. Confirm each item on the filing date.

Los Angeles County

• Los Angeles Superior Court unlawful detainer
• Los Angeles Superior Court unlawful-detainer forms
• Los Angeles County Sheriff Civil Services

Los Angeles uses local forms and courthouse-assignment tools in addition to statewide forms. Review the current standing orders and filing location. Some official legacy pages still contain the former five-day response rule; current section 1167 and current Judicial Council forms control.

San Diego County

• San Diego Superior Court landlord-tenant center
• San Diego landlord-tenant forms
• San Diego Sheriff Court Services Bureau
• San Diego Sheriff civil process

As of July 26, 2026, the San Diego court states that unlawful-detainer filings go to the Central Division and its complaint packet shows a July 2026 revision. Verify both immediately before filing.

City-level prerequisites

The property’s city can impose requirements that must be satisfied before or shortly after a termination notice is served. Examples include rent registration, just-cause notices, relocation payments, substantial-remodel permits, city filing, right-to-return language, and buyout rules.

Use the Local Landlord Law Center before relying only on the county court. Laguna Beach, for example, has a defined reporting ordinance for certain demolition and substantial-remodel terminations; Santa Ana, Los Angeles, unincorporated Los Angeles County, and the City of San Diego have their own material overlays.

Decision paths

The predicate notice has not been served

Start with a Pre-Litigation Eviction and Possession Assessment. Determine coverage, ground, evidence, cure sequence, local steps, notice, and service before a deadline begins.

The notice is running

Preserve the status quo. Track payment or cure, avoid inconsistent communications, document service and tenant responses, and do not file early.

The notice expired and no complaint has been filed

Re-audit the complete file. This is the last clean opportunity to identify a notice or local-compliance defect before paying filing and service costs.

A complaint was filed but service is incomplete

Use litigation counsel to manage service attempts, diligence, court authorization, amendment, and timing. Do not improvise posting service.

The defendant did not respond

Calculate the response deadline from the actual method and proof of service, verify the current default packet, and submit evidence that supports judgment. A clerk’s entry of default and the court’s possession judgment are distinct steps.

The defendant answered or filed a motion

Transition promptly to litigation counsel. Preserve trial evidence, evaluate settlement, and calendar all court and discovery deadlines.

The parties want to settle

Use a written agreement designed for the case’s current stage. Address possession and enforcement mechanics clearly and use the current court form or pleading required by counsel and the court.

Judgment was entered

Obtain the correct writ and use the county sheriff’s current instructions. Do not change possession until the sheriff completes restoration or counsel confirms another lawful surrender.

Common mistakes

• Starting with a court form instead of the legal termination ground.
• Serving the wrong predicate notice or miscounting its deadline.
• Failing to provide a curable breach sequence required by section 1946.2.
• Filing before relocation, permit, registry, or city-notice prerequisites are satisfied.
• Demanding fees or other charges as rent without a valid basis.
• Accepting money or signing an agreement after notice without reassessing waiver and case theory.
• Naming the wrong party or omitting an occupant without considering possession procedures.
• Using personal service deadlines after substituted or posting service.
• Requesting default from an old five-day calendar.
• Using a pre-July 1, 2026 UD-100 or another superseded form.
• Assuming a favorable judgment itself permits an owner lockout.
• Failing to plan for personal property after sheriff restoration.
• Allowing pre-litigation counseling to drift into filed litigation without a clear engagement and counsel handoff.

When legal review is worthwhile

Review is worthwhile before any predicate notice where possession is the likely next step. It becomes urgent when:

• A local rent-control or just-cause program may apply.
• The owner claims an AB 1482 exemption.
• The termination is for owner occupancy, substantial remodel, demolition, withdrawal, nuisance, or an alleged incurable breach.
• The ledger includes subsidies, concessions, fees, partial payments, or disputed credits.
• Habitability, retaliation, discrimination, accommodation, or resident-organizing facts exist.
• An adult occupant is not named in the lease.
• A bankruptcy, emergency declaration, agency complaint, or court paper appears.
• A response, motion, trial request, sheriff notice, stay, or claim of right to possession has been filed.

Law Laguna can assess the tenancy, documents, local requirements, available options, and pre-litigation strategy. The firm can review or prepare the owner file, identify notice defects before filing, support negotiation, and prepare a referral memorandum and organized transition.

If a filed court action becomes necessary, Law Laguna can help prepare an organized transition to appropriate litigation counsel. Any litigation appearance, filing responsibility, deadline control, or counsel-of-record role requires a separate written engagement with the lawyer handling the case.

Related services and guides

• Evictions and Lease Enforcement for California Owners
• Pre-Litigation Eviction and Possession Assessment
• Nonpayment of Rent
• Lease-Violation Notices and Cure Strategy
• Month-to-Month Termination and Just Cause
• Tenant Claims, Demand Letters, Negotiation, and Settlement
• California Tenant Protection Act and AB 1482
• Local Landlord Law Center

Primary legal sources

• California unlawful-detainer statutes
• Code of Civil Procedure section 1161
• Code of Civil Procedure section 1162
• Code of Civil Procedure section 1167
• Code of Civil Procedure section 1170.5
• Code of Civil Procedure section 1174
• Civil Code section 789.3
• Civil Code section 1946.3
• AB 246 chaptered bill
• California Courts eviction process
• Current Judicial Council eviction forms

Laws and local procedures change. This page is general information, not legal advice. Verify the current declaration, rate, fee, form, or agency instruction before acting.

Have the Notice and Timeline Reviewed

Many possession cases are won or lost in the property analysis, notice, service record, and evidence assembled before filing. Law Laguna can review that file and help define the next lawful step.

Have the Notice and Timeline Reviewed

Do not send confidential facts or documents at the first-contact stage. Submitting an inquiry does not create an attorney-client relationship. Law Laguna will first review conflicts, service scope, and availability.