Serving the defendant
The plaintiff arranges and pays for service and may not serve the papers personally. Service is made by any adult 18 or older who is not a party, by the county sheriff or marshal for a fee, by a registered process server, or by the court clerk by certified mail where that option is offered.
- Personal service - an adult 18 or older who is not a party hands the forms to the defendant
- Substituted service - leave the forms with an adult at the defendant's home or usual mailing address (not a P.O. box) or workplace, then mail a copy
- Certified mail sent by the court clerk (offered only in some courts; a $15 clerk fee, and it often fails because the defendant can refuse to sign)
- Service by the county sheriff or marshal for a fee
- Service by a registered process server for a fee
Clerk certified mail is complete only if the defendant actually signs for it; a refused or unsigned certified-mail service does not count and will delay the case, so most filers use personal service by a sheriff or process server.
Where filers get this wrong
Two things about service are consistently misunderstood:
- The clerk accepts your filing whether or not service is later done properly. The counter is not the check.
- Whether service was good gets tested afterwards — typically at the moment you ask the court for a default because the defendant did not appear.
Proof of service (SC-104) must be on file before the hearing. Timing: the defendant must be served at least 15 days before the trial (20 days if served in a different county); by substituted service, at least 25 days before (30 days if in a different county). If service is not completed and proven in time, the court postpones the trial.
Clerk certified mail is complete only if the defendant actually signs for it; a refused or unsigned certified-mail service does not count and will delay the case, so most filers use personal service by a sheriff or process server.
The order it has to happen in
- 1. File first. The court issues the summons. Papers that have not been issued cannot be served.
- 2. Choose a permitted method. California permits 5 routes, listed above. Which is wise depends on the defendant, not on which is cheapest.
- 3. Give a real, current address. A registered agent address for a business, a residence for a person. A stale address is the most common reason service fails and a case simply stops moving.
- 4. Get the proof on the docket. The server files a return of service. Without it the court treats the defendant as never notified.
Clerk certified mail is complete only if the defendant actually signs for it; a refused or unsigned certified-mail service does not count and will delay the case, so most filers use personal service by a sheriff or process server.
- Claim limit
- $12,500
- Court
- Small Claims Court
- File online
- Varies by court
- Appeal window
- 30 days
Common questions
Who serves small claims papers in California?
The plaintiff arranges and pays for service and may not serve the papers personally. Service is made by any adult 18 or older who is not a party, by the county sheriff or marshal for a fee, by a registered process server, or by the court clerk by certified mail where that option is offered.
Can I serve the papers myself in California?
No. Service is carried out by someone who is not a party to the case. Handing the papers over yourself does not count, and the defect usually surfaces at the worst moment.
Can small claims papers be served by mail in California?
California permits a mail route where the case type allows it. Clerk certified mail is complete only if the defendant actually signs for it; a refused or unsigned certified-mail service does not count and will delay the case, so most filers use personal service by a sheriff or process server.
What happens if the defendant cannot be found?
The case does not move forward. Courts have alternative-service procedures for that situation, but they have to be applied for and they are not granted automatically.
Pick the county where you would sue
Small claims is filed at the county level. Pick your county for its court, fee, and forms — or start your claim and we'll ask where you'd sue.
- Los Angeles County Small Claims Court
- San Diego County Small Claims Court
- Orange County Small Claims Court
- Riverside County Small Claims Court
- San Bernardino County Small Claims Court
- Santa Clara County Small Claims Court
- Alameda County Small Claims Court
- San Francisco County Small Claims Court
- San Mateo County Small Claims Court
- Contra Costa County Small Claims Court
- Fresno County Small Claims Court
- Stanislaus County Small Claims Court
- Sonoma County Small Claims Court
- Solano County Small Claims Court
- Monterey County Small Claims Court
- Tulare County Small Claims Court
- Santa Barbara County Small Claims Court
- Kern County Small Claims Court
- Sacramento County Small Claims Court
Your small claims filing packet — $49
Everything above, assembled and filled in with your facts:
- Your court's own forms, with your claim written in the language the court expects
- A demand letter built from the same facts
- A filing checklist with your court's address, hours, and fee
- What to bring to your hearing
Answer a few questions first. See your claim written out before you pay anything.
Reviewed by Small Claims Desk · Last reviewed 2026-08-20 · Sourced from California judiciary self-help resources and each county's clerk of court and Cal. Code Civ. Proc. §§ 116.110-116.950 (The Small Claims Act). See how we verify.