How to File a Personal Injury Lawsuit in California: A Step-by-Step Guide

Most personal injury cases in California settle without ever going to trial — but understanding the full litigation process puts you in a stronger negotiating position and helps you make informed decisions at every stage. Here's exactly how a California personal injury lawsuit works from start to finish.

Step 1: Hire a Personal Injury Attorney

California personal injury attorneys work on contingency — they receive a percentage of your recovery (typically 33% before trial, 40% if the case goes to trial) and nothing if you lose. This means there is no financial barrier to hiring experienced legal representation. Your attorney will immediately begin preserving evidence: sending spoliation letters to preserve surveillance footage, obtaining the police report, ordering medical records, and identifying all potentially liable parties.

Step 2: Medical Treatment and Reaching MMI

Before your attorney can accurately value your case, you need to reach maximum medical improvement (MMI) — the point at which your doctors determine your condition has stabilized and further significant improvement is unlikely. Settling before MMI is a common mistake: if you later discover your injuries are more serious than initially thought, you cannot reopen a settled case. Consistent, documented medical treatment is essential throughout this phase.

Step 3: The Demand Letter

Once you've reached MMI, your attorney will send a demand letter to the at-fault party's insurance company. The demand letter includes a detailed description of the accident, a summary of your injuries and medical treatment, all medical bills and records, lost wage documentation, a calculation of pain and suffering damages, and a demand for a specific settlement amount. The insurance company typically has 15 days to acknowledge receipt and 40 days to accept or deny the claim under California Insurance Code § 790.03.

Step 4: Filing the Lawsuit

If the insurance company denies your claim or offers an inadequate settlement, your attorney files a complaint in the appropriate California Superior Court. Filing deadlines under California Code of Civil Procedure § 335.1:

• Standard personal injury: 2 years from the date of injury
• Government entities: 6 months to file a tort claim, then 6 months after rejection to file suit
• Medical malpractice: 3 years from injury or 1 year from discovery, whichever is earlier
• Minors: Tolled until age 18 (standard cases)

Step 5: Discovery

Discovery is the formal process by which both sides exchange information. It typically includes interrogatories (written questions answered under oath), requests for production of documents, depositions (sworn oral testimony), and independent medical examinations. Discovery typically takes 6–12 months in California personal injury cases.

Step 6: Mediation and Settlement

California courts strongly encourage settlement. Most cases settle at or after mediation — a structured negotiation session with a neutral mediator. Approximately 95% of California personal injury cases settle before trial. Settlement is usually preferable to trial because it provides certainty, avoids the cost and time of litigation, and eliminates the risk of a defense verdict.

Step 7: Trial

If the case does not settle, it proceeds to trial. California personal injury trials are heard by a jury of 12 (civil cases require a 3/4 majority — 9 of 12 jurors). Trials typically last 3–10 days for moderate cases, longer for complex cases.

Frequently Asked Questions

How long does a California personal injury lawsuit take?

Cases that settle before filing typically resolve in 6–18 months. Cases that go through full litigation take 2–4 years. Cases that go to trial and are appealed can take 5+ years. The timeline depends on the complexity of liability, the severity of injuries, and the court's docket.

Do I have to go to court?

Most clients never set foot in a courtroom. If your case settles (approximately 95% of cases), you will sign a settlement agreement and release without any court appearance. If your case goes to trial, you will need to testify — but your attorney will prepare you thoroughly.

What is a lien doctor?

A lien doctor treats injury victims on credit, agreeing to be paid from the settlement proceeds rather than upfront. This is important for clients who don't have health insurance or whose health insurer won't cover accident-related treatment. HellaHurt can connect you with qualified lien doctors in California.