Filing a Motion to Quash in California: Deadline, Grounds, and Hearing

A motion to quash in California is the tool a defendant uses under Code of Civil Procedure § 418.10 to challenge a court’s personal jurisdiction, contest defective service of the summons, or argue that California is an inconvenient forum. You must file it on or before the last day you would otherwise have to respond to the complaint, and if you skip it and file a demurrer, motion to strike, or answer alone, you permanently give up the right to raise these objections.¹

What the Motion Can Argue

Section 418.10 covers three distinct grounds, and you can raise more than one in the same motion.

The first is lack of personal jurisdiction: the court has no authority over you because you lack sufficient ties to California. If you have no residence, property, or meaningful business activity in the state, and the lawsuit does not arise from something you directed at California, this is the argument to make.

The second is inconvenient forum. Even where jurisdiction technically exists, you can ask the court to stay or dismiss the case because another jurisdiction would be substantially more appropriate. Courts weigh where the witnesses are, where the events happened, and whether the alternative forum can provide a remedy.¹

The third is defective service. California has specific rules about how, when, and on whom a summons must be delivered. If the process server left papers with someone who does not live at your address, served you at the wrong location, or failed to follow substitute-service requirements, the court’s authority over you never attached. Service errors are common, and this is often where pro se defendants find traction.

The Deadline and the Waiver Trap

You must file the motion on or before the last day allowed to respond to the complaint, generally 30 days after service. The court can grant more time for good cause, but relying on that is risky.¹

The waiver rule is unforgiving. If you file a demurrer or motion to strike without simultaneously filing a motion to quash, you lose the right to challenge personal jurisdiction, service of process, and inconvenient forum. There is no reopening that door.¹

Filing the motion also automatically extends your time to answer the complaint. If the court denies the motion, you have 15 days after being served with written notice of the denial to file your answer, and the court can add up to 20 more days for good cause.¹

Special Appearance and the Simultaneous-Filing Rule

Filing a motion to quash is a special appearance. You are showing up for the limited purpose of contesting the court’s authority, not submitting to it. Keep your participation confined to the jurisdictional challenge and the court does not gain power over you on the merits.¹

A general appearance is anything that recognizes the court’s authority: filing an answer, propounding discovery, or asking the court for affirmative relief. A general appearance permanently waives your objection to personal jurisdiction and defective service.²

Section 418.10(e) contains a safeguard many defendants miss. You can file the motion to quash and simultaneously file an answer, demurrer, or motion to strike without converting your appearance into a general one. None of those filings counts as an appearance unless the court denies the motion to quash. That lets you preserve the jurisdictional challenge while also protecting yourself on the merits if the motion fails.¹

What Goes in the Filing Package

California Rules of Court, Rule 3.1112 sets the minimum papers for a civil motion. You will need three components:

A notice of motion identifying the relief requested, the grounds, and the hearing date, time, and department.³
A memorandum of points and authorities laying out the legal argument with statutes and case law.⁴
Supporting declarations signed under penalty of perjury. A jurisdiction declaration explains your lack of connection to California and where you actually live and work. A defective-service declaration describes exactly how service was attempted and why it failed.⁴

Judicial Council forms cover much of this, and some county superior courts add local forms.⁵ Check your courthouse before filing. A clerk rejection over formatting can cost you the deadline.

Fees and Serving the Plaintiff

The first-appearance filing fee in an unlimited civil case (amounts over $25,000) is $435.⁶ Limited civil cases cost less. If you cannot afford the fee, apply for a fee waiver.

After the clerk accepts the filing, serve the motion package on the plaintiff by personal delivery, mail, or electronic service if the parties have agreed to it, and file a proof of service to confirm the plaintiff got notice.⁷

Who Has to Prove What

Once you file, the plaintiff carries the burden. It is the plaintiff who must prove valid service and sufficient contacts by a preponderance of the evidence. You do not have to prove a negative.

That does not mean a one-line motion will succeed. Your declarations still need enough factual detail to create a genuine dispute. A bare assertion that “the court has no jurisdiction,” with nothing behind it, will not shift the analysis.

Opposition, Reply, and Hearing

Under CCP § 1005, the plaintiff’s opposition papers must be filed and served at least nine court days before the hearing. Your reply, if you file one, is due at least five court days before the hearing. The court can shorten these deadlines, but that is uncommon.⁸

At the hearing, both sides argue and the plaintiff must carry the evidentiary weight. If the plaintiff cannot demonstrate valid service and sufficient contacts, the court should grant the motion.

If the Court Grants the Motion

When the court grants a motion to quash for lack of personal jurisdiction, the summons is void and the case cannot proceed against you as filed. The plaintiff may try to re-serve you correctly if the defect was in service, or refile in a proper jurisdiction if the defect was in contacts. A grant on inconvenient forum grounds results in a stay or dismissal so the case can move elsewhere.

If the Court Denies the Motion

A denial is not the end of the road. Under § 418.10(c), you can petition the Court of Appeal for a writ of mandate to reverse the trial court. The petition must be filed within 10 days after you are served with written notice of the denial order, and the trial court can extend that by up to 20 days for good cause.¹

To pause trial court proceedings while the appellate court considers the petition, serve and file a notice with the trial court stating that you have petitioned for the writ. That notice has to go out on or before the last day of your time to file a responsive pleading. Once it is filed, your answer deadline extends until 10 days after you receive written notice of the final judgment in the writ proceeding, with up to 20 more days available for good cause.¹

If the appellate court denies the writ, you file your answer in the trial court. The jurisdictional issue is resolved at that point and the court has full authority over you going forward.

Federal Court Uses a Different Mechanism

If your case is in federal court, § 418.10 does not apply. Federal Rule of Civil Procedure 12(b) replaces the motion to quash with a motion to dismiss: lack of personal jurisdiction is raised under Rule 12(b)(2), and defective service under Rule 12(b)(5). Rule 12(h)(1) waives these defenses if you leave them out of your first Rule 12 motion or your initial responsive pleading.⁹

1
California Legislative Information. California Code CCP 418.10
2
Judicial Branch of California. Rule 5.62 Appearance by Respondent
3
Judicial Branch of California. California Rules of Court 2026 – Rule 3.1110 General Format
4
Judicial Branch of California. Rule 3.1112 Motions and Other Pleadings
5
California Courts. Find and Fill Out Court Forms
6
Judicial Council of California. Statewide Civil Fee Schedule
7
California Courts. Proof of Service – Civil (POS-040)
8
California Legislative Information. California Code of Civil Procedure CCP 1005
9
Legal Information Institute. Rule 12 Defenses and Objections