California Rules of Court 3.1300: Deadlines, Service, and Proof

Under California Rules of Court, rule 3.1300, moving papers in a noticed civil motion must be filed and served at least 16 court days before the hearing, opposition papers at least 9 court days before, and reply papers at least 5 court days before.¹ Rule 3.1300 itself is short: it points to Code of Civil Procedure section 1005 for those deadlines and then adds a few procedural rules of its own about proof of service, late papers, and the court’s power to shorten time.²

Which Motions Rule 3.1300 Governs

The rule applies to nearly all noticed motions in general civil cases: motions to compel discovery, motions to quash service, demurrers, and the like. A few motions run on their own clocks and are not governed by rule 3.1300. Summary judgment requires 81 days’ notice.³ Ex parte applications and motions for new trial have their own statutory deadlines.

Counting the 16 Court Days for Moving Papers

Count backward from the hearing date, skipping weekends and judicial holidays. If the count lands on a holiday, the deadline moves to the next non-holiday day.⁴ The 16 court days is only the base. Depending on how you serve the other side, you add more days on top.

Extensions Based on Service Method

These are added to the 16-court-day base for moving papers:¹

Mail within California: add 5 calendar days.
Mail outside California but within the U.S.: add 10 calendar days.
Fax, express mail, or overnight delivery: add 2 calendar days.
Electronic service: add 2 court days (not calendar days).⁵

The electronic service extension is the one practitioners miscount most often. Because it adds court days rather than calendar days, weekends and holidays in the window can push the effective deadline back further than you’d expect. With most California superior courts now authorizing or mandating electronic filing under rule 2.253, this is the extension that applies in the majority of cases.⁶

One trap to avoid: the general service-by-mail extension under CCP section 1013 does not apply to motions governed by section 1005. The extensions listed above are the only ones that matter here.

Opposition Papers

Opposition must be filed with the court and served on every other party at least 9 court days before the hearing. This deadline is fixed. It does not shift based on how the moving party served you.

Delivery method matters for opposition. CCP section 1005(c) requires that opposition be served by personal delivery, fax, express mail, or another method reasonably calculated to reach the other party by the close of the next business day after filing. Regular mail is too slow, because the moving party has only a few days to prepare a reply.

Reply Papers

The moving party may file a reply addressing arguments raised in the opposition. Reply papers must be filed and served at least 5 court days before the hearing. The same next-business-day delivery requirement that applies to opposition applies to the reply: use personal delivery, fax, express mail, or another fast method.

Proof of Service

Whenever you actually served the moving papers, the proof of service documenting that service must be on file no later than 5 court days before the hearing.² This is a separate requirement from filing the motion. Timely service without a proof of service on file can still create problems, because the court has no way to verify service without it.

What Happens If You File Late

A court clerk cannot reject your papers simply because they are late. Rule 3.1300(d) says no paper may be refused for filing on the ground that it was untimely. The judge, however, can decline to consider late-filed papers at the hearing, and if that happens, the court’s minutes or order must say so.² File the papers either way; whether the judge reads them is a separate question.

Orders Shortening Time

When the standard timeline is too long for the situation, rule 3.1300(b) lets the court set shorter deadlines for filing and service than section 1005 requires. The court can act on its own or on a party’s ex parte application supported by a declaration showing good cause. It’s the standard tool when something is urgent enough that a full 16-court-day cycle would cause real harm, but not so emergency-level that an ex parte order on the underlying issue is warranted.

E-Filing and Self-Represented Parties

Many California superior courts now require electronic filing and service in civil cases. Under rule 2.253, individual courts set their own rules about which categories of cases require e-filing. Self-represented parties are exempt from mandatory electronic filing and service; if you are representing yourself, you may file and serve by conventional means unless you choose otherwise. Represented parties who face undue hardship from e-filing can also apply for an exemption.⁶

If you are served electronically, the 2-court-day extension under CCP section 1010.6 applies to your response deadline for motions governed by rule 3.1300.

1
California Legislative Information. California Code of Civil Procedure 1005
2
Judicial Branch of California. California Rules of Court 3.1300 – Time for Filing and Service of Motion Papers
3
California Legislative Information. California Code of Civil Procedure CCP 437c
4
California Legislative Information. California Code of Civil Procedure CCP 12a
5
California Legislative Information. California Code of Civil Procedure 1010.6
6
Judicial Branch of California. California Rules of Court 2.253 – Permissive Electronic Filing, Mandatory Electronic Filing