California, United States · property

How to Answer an Unlawful Detainer in California

Receiving an eviction lawsuit (Unlawful Detainer) is stressful, but California law gives you powerful defenses if you act quickly. This guide walks you through calculating your tight deadline, asserting your rights, and filing your response to protect your home.

Understanding the Law: Your 10-Day Response Window in California

In California, an eviction lawsuit is legally known as an Unlawful Detainer. Unlike standard civil lawsuits where you have 30 days to respond, eviction proceedings are fast-tracked. Under California Code of Civil Procedure (CCP) § 1167, as amended by Assembly Bill 2347, you have exactly ten (10) court days from the date you were personally served with the Summons and Complaint to file a written response with the court. Court days exclude weekends and official judicial holidays. If you were served via substituted service (where someone else at your home was handed the papers and a copy was mailed to you), your 10-day response clock begins the day after the mailing is completed, but you should move as quickly as possible to avoid complications.

Landlords and their attorneys frequently count on tenants being too overwhelmed or confused to respond. If you miss this crucial 10-day deadline, the landlord can immediately ask the court for a clerk's default judgment. This allows them to obtain a Writ of Possession to hand to the sheriff, who will execute a physical lockout. To fight back and keep your day in court, you must file a formal written response—most commonly an Answer (Judicial Council Form UD-105)—stating your side of the story and defending your home.

Your Shield: Raising Affirmative Defenses Under California Law

When filling out your Answer (Form UD-105), simply denying the landlord's claims is not enough. You must actively assert your affirmative defenses. Defenses that are not specifically pleaded in your written Answer are legally waived and cannot be raised at trial. This is your opportunity to call out your landlord's failure to respect the law and your basic rights.

Under California law, you have several powerful defenses. If your rental unit has severe, unaddressed maintenance issues like toxic mold, plumbing leaks, or broken heating, you can assert a breach of the implied warranty of habitability under Civil Code § 1941 and CCP § 1174.2. If the landlord is attempting to evict you because you complained to code enforcement or requested repairs, you are protected by the state's anti-retaliation statute, Civil Code § 1942.5. Additionally, if the landlord's initial 3-Day or 30-Day notice contained incorrect rent amounts or was served improperly under CCP § 1162, the entire case can be dismissed. Be sure to check the box for a jury trial on your Answer (Item 4) to ensure your peers, not just a judge, hear your side of the story.

Navigating the Court Process and Securing Your Rights

Filing your Answer stops the landlord from taking an immediate default judgment, but the fight is not over. Once your Answer is filed, the landlord will request a trial date, which the court must schedule within 20 days under CCP § 1170.5(a). In the days leading up to trial, both sides have the right to conduct discovery, requesting documents and answers from each other under strict 5-day response turnarounds.

Facing a landlord's legal team can feel incredibly isolating, but you do not have to navigate this high-stakes process alone. Preparation and organization are your best tools. You can use Caunsel to research California eviction procedures, securely organize and save your evidence (like photos of repair issues and written notices) in an organized case file, or connect with an independent tenant attorney who can represent you or review your documents before they are filed.

Steps

• Determine your exact filing deadline. Count 10 court days starting the day after you were personally served with the Summons and Complaint, skipping weekends and California court holidays.
• Complete Judicial Council Form UD-105 (Answer - Unlawful Detainer). Carefully select your affirmative defenses in Item 3, such as breach of habitability (Civil Code § 1941) or retaliation (Civil Code § 1942.5), and make sure to request a jury trial under Item 4.
• Prepare a fee waiver if needed. If you cannot afford the court filing fee, complete Form FW-001 (Request to Waive Court Fees) and Form FW-003 to submit alongside your Answer.
• Serve the landlord's attorney and file the original Answer. Have an adult who is not a party to the case mail a copy of the Answer to the landlord's lawyer, complete a Proof of Service by Mail (Form POS-030), and file both the original Answer and the Proof of Service with the court clerk.

Common mistakes

• Ignoring the summons or hoping it will go away. Evictions in California move incredibly fast; missing the 10 court-day deadline results in an automatic loss via default judgment.
• Failing to list your affirmative defenses. If you do not check the appropriate boxes and describe issues like mold or broken heating on Form UD-105, you cannot bring them up at trial.
• Serving the papers yourself. Under California law, a party to the lawsuit cannot legally serve court documents. You must have an adult non-party mail or deliver the copy to the landlord's attorney.

Questions people ask

What happens if I miss the 10-day deadline to file my Answer?

If you miss the deadline, the landlord will file for a default judgment. Once entered, the clerk will issue a Writ of Possession to the sheriff, who will post a 5-day notice to vacate on your door. After 5 days, the sheriff will physically lock you out.

Can I stop an eviction by paying the rent after the unlawful detainer is filed?

Once the 3-day notice to pay or quit expires and the landlord files a lawsuit, they are not legally obligated to accept late rent unless your lease agreement allows it or you negotiate a formal settlement. However, if they accept a rent payment without a written agreement, it may waive their right to proceed with the eviction.

Do I have to pay to file an Answer in California?

Yes, California courts charge a filing fee for an Answer, which ranges from $240 to $435 depending on the county and the amount of rent claimed. If you cannot afford this, you can submit a Request to Waive Court Fees (Form FW-001) alongside your Answer.

General information only, last updated 2026-10-03. Caunsel is not a law firm and does not practise law. AI answers and this guide are not legal advice. Verify filings, deadlines, and statutes with a licensed lawyer in California, United States.