California Code of Civil Procedure Section 1011 governs how motions, notices, briefs, discovery requests, and other papers are delivered between parties and attorneys after a civil lawsuit is already underway. The statute lays out a cascade of methods: start with personal delivery, then specific office alternatives for attorneys, then the attorney’s residence in the same county, and mail only as a fallback. Related sections handle electronic service (CCP 1010.6) and service by mail (CCP 1013), and each method carries its own timing rules.
Get service wrong and the court can continue your hearing, refuse to consider your filing, or set aside an order entered without proper notice. The rules are technical, but the underlying principle is simple: the other side is entitled to know what you’re filing and to have time to respond.
What CCP 1011 Covers
CCP 1011 applies to papers exchanged between parties who are already in a case. It does not govern how a lawsuit is started. The initial summons and complaint fall under CCP 415.10 through 415.50, which carry stricter requirements including the use of a sheriff or registered process server in most situations.
Once both sides are participating, the rules loosen because everyone already knows the case exists. Loosened does not mean optional. Courts enforce these requirements strictly, and sloppy service is one of the more preventable ways to lose ground in a case.
Serving an Attorney
The most direct method is handing the papers to the attorney in person. Personal delivery is complete the moment the documents change hands, and no extra time is added to any response deadline.
If personal delivery isn’t possible, CCP 1011(a) sets out what to try next, in order:
- Leave the papers in an envelope or package clearly labeled with the attorney’s name, either with a receptionist or the person in charge of the office.
- If no one is available at the office, leave the papers in a conspicuous place there between 9:00 a.m. and 5:00 p.m.
- If the office isn’t open, leave the papers at the attorney’s residence with someone at least 18 years old, but only if the residence is in the same county as the office.
- If none of those work, mail the papers to the attorney’s office (or residence, if the office address is unknown). If neither address is known, deliver the papers to the court clerk.
The labeling requirement is easy to overlook. The statute specifically requires that the package be clearly labeled to identify the attorney being served. An unmarked envelope dropped on a reception desk does not satisfy the statute.1California Legislative Information. California Code CCP – Section 1011
Serving a Party Directly
When the recipient is a party rather than an attorney, CCP 1011(b) applies. If no other statute specifies a particular method, you can leave the papers at the party’s residence with someone at least 18 years old. Service at a residence must happen between 8:00 a.m. and 8:00 p.m.
If no one age 18 or older is available during that window, you can serve by mail instead. If the party’s residence is unknown, the papers can be delivered to the court clerk.1California Legislative Information. California Code CCP – Section 1011
Electronic Service Under CCP 1010.6
CCP 1011(c) points to CCP 1010.6 for the rules on electronic service. In most California civil cases involving represented parties, electronic service has become the default.
Any party represented by an attorney who has appeared in the case must accept electronic service of documents that could otherwise be served by mail, express mail, overnight delivery, or fax. Courts can also order electronic service on represented parties. Self-represented parties are not required to accept electronic service unless they affirmatively consent, either by filing a notice with the court or by agreeing through the court’s e-filing provider. Filing a document electronically does not by itself count as consent to receive electronic service.2California Legislative Information. California Code CCP – Section 1010.6
Individual courts decide which case types require mandatory electronic filing and service. A court can mandate e-filing for all civil cases, for particular categories like unlimited or limited civil cases, for complex litigation, or for cases assigned to specific departments.3California Courts. California Rules of Court Rule 2.253
Electronic service is deemed complete when the document is transmitted or the notification email is sent. A document served electronically on a court day counts as served that day; a document served on a non-court day is deemed served the next court day. Electronic service adds two court days to any statutory response deadline. That extension does not apply to notices of appeal, motions for new trial, or motions to vacate judgment.
One important limit: if a document must be served by certified or registered mail, electronic service is not an acceptable substitute.4California Legislative Information. California Code of Civil Procedure 1010.6
Service by Mail Under CCP 1013
Mail is still common, especially when a party or attorney is outside the immediate area. Under CCP 1013(a), the papers must be placed in a sealed envelope with prepaid postage and deposited at a U.S. Postal Service facility. Address the envelope to the recipient at the office address last provided in a court filing. If no office address is available, use the party’s residence.
Service by mail is complete when the envelope is deposited, not when it arrives. To account for transit, the statute adds days to any response deadline:
- 5 calendar days if both sender and recipient are within California
- 10 calendar days if either is outside California but within the United States
- 20 calendar days if either is outside the United States
Those extensions do not apply to notices of appeal, motions for new trial, or motions to vacate judgment. Express Mail and overnight delivery follow similar deposit rules but carry a shorter two-calendar-day extension.5California Legislative Information. California Code CCP – Section 1013
Because the method of service affects how much time the other side has to respond, the choice matters beyond just delivery. Motion notice periods under CCP 1005 build on these extensions: a motion served by mail within California requires 16 court days of notice plus the 5 calendar days for mail. Miscalculating that combined window is one of the more common ways parties end up re-serving and losing a hearing date.6California Legislative Information. California Code CCP – Section 1005
Proof of Service
Doing the service correctly is only half the job. You also have to prove it. Without a properly completed proof of service, the court has no record that the other side received notice, and the filing can be rejected or continued.
A proof of service is a written declaration, typically signed under penalty of perjury, that identifies:
- The name of the person or attorney served
- The address where service occurred
- The method of service
- The date and time of service
- A description of each document served
- The name and signature of the person who performed the service
Judicial Council forms exist for proof of service by mail, personal delivery, and electronic service. Using the correct form reduces the chance of omitting something required. The proof of service must be filed with the court, and in practice it should be attached to or filed alongside the papers themselves.
When Service Is Defective
Most service disputes don’t produce dramatic sanctions. They produce lost time. If the opposing party shows they weren’t properly served, the court can continue the hearing, forcing the moving party to re-serve and wait through the notice period again. In some cases, the court will strike a filing outright.
The stakes rise when a judgment or order was entered while one side lacked proper notice. CCP 473(d) gives courts the power to set aside any void judgment or order on a party’s motion.7California Legislative Information. California Code of Civil Procedure CCP 473
In more egregious situations, courts can order monetary sanctions under CCP 128.5, including the other side’s reasonable expenses and attorney’s fees, when a party or attorney acts in bad faith. Deliberately failing to serve, or repeatedly serving improperly to delay a case, can fall within that authority.8California Legislative Information. California Code of Civil Procedure 128.5
Narrow Defenses to a Service Defect
Not every technical flaw is fatal. California courts recognize that the purpose of service is notice, not procedural gamesmanship. If the recipient actually received the documents despite a minor defect, a court is unlikely to throw out the service. Leaving papers at an attorney’s office slightly outside the 9:00 a.m. to 5:00 p.m. window, or handing them to an intern rather than a receptionist who then gets them to the attorney the same day, tends to fall on the forgivable side.
This defense has limits. It works for small deviations, not for defects large enough that the other side genuinely lacked time to prepare a response.
A separate wrinkle involves electronic service. A party who previously consented to electronic service can withdraw that consent at any time by filing the appropriate Judicial Council form. After withdrawal, service must revert to a method allowed under CCP 1011 or 1013. Serving electronically after formal withdrawal is defective, even if the document was received.2California Legislative Information. California Code CCP – Section 1010.6
When conventional methods truly won’t work, a party can ask the court to authorize an alternative approach, though the court will expect a showing of genuine effort with the standard methods first.