To file a petition to compel arbitration in California, you file a written petition in superior court under Code of Civil Procedure section 1281.2, allege that a written arbitration agreement exists and that the other side refuses to arbitrate, attach the agreement, serve the other party under section 1290.4, and appear at a hearing where the court decides whether to order arbitration.1California Legislative Information. California Code CCP – 1281.2 The court’s job at that hearing is narrow: it looks at whether a valid agreement exists and whether the dispute falls within it, not at the strength of the underlying claims.
What the Petition Has to Say
Section 1281.2 sets the substantive threshold. The petition must allege two facts: a written agreement to arbitrate the controversy exists, and a party to that agreement refuses to arbitrate. Attach a copy of the arbitration agreement so the court can read the clause for itself, and explain why the dispute you want arbitrated falls inside the clause’s scope.
A court cannot deny the petition on the ground that it thinks your underlying claims are weak. If the agreement is valid and covers the dispute, the order to arbitrate goes out. The merits belong to the arbitrator.
One statutory exception matters at the filing stage. If a third party who is not bound by the arbitration agreement is involved in related litigation on the same set of facts, section 1281.2 lets the court refuse to compel arbitration, order consolidation, or stay the arbitration to avoid inconsistent rulings. If your dispute has that kind of overlap, expect it to come up.
Which Superior Court to File In
Venue is governed by section 1292. When the petition is filed before any arbitration has begun, it goes to the superior court in the county where the arbitration agreement is to be performed, or where the agreement was made.2California Legislative Information. California Code of Civil Procedure 1292 If the agreement does not specify where it is to be performed and was not made in California, you can file in any county where a party lives or does business.
Filing in the wrong county is not fatal, but it invites a motion to transfer and burns time. Read the contract for a performance or venue clause before you pick a courthouse.
Serving the Petition
Section 1290.4 controls service. If the arbitration agreement itself sets a method for serving papers, that method applies. If the agreement is silent and the party you are serving has not yet appeared in a related case, you serve the petition and notice of hearing the same way you would serve a civil summons, typically by personal delivery or substituted service.3California Legislative Information. California Code of Civil Procedure 1290.4
For a party outside California, registered or certified mail is available, but the court cannot hear the petition until at least 30 days after the papers are mailed. Build that delay into your calendar. Botched service is one of the easiest ways to lose a petition on grounds that have nothing to do with the merits.
What Happens at the Hearing
Once the petition is filed and served, the court sets a hearing. The court’s role at that hearing is deliberately limited. It decides whether a valid arbitration agreement exists and whether the dispute in front of it is within the agreement’s scope. If yes to both, it orders the parties to arbitrate.
This is also where the responding party puts on any defenses to arbitration.
Defenses You Should Expect the Other Side to Raise
Section 1281.2 identifies two statutory grounds for denying a petition: waiver of the right to arbitrate, and grounds to rescind the agreement. In practice, the arguments are broader.
Waiver by Litigation Conduct
A party that has been actively litigating can lose the right to arbitrate. California’s waiver standard changed in 2024 when the California Supreme Court decided Quach v. California Commerce Club. Courts no longer ask whether the party opposing arbitration was prejudiced by the delay. The question is whether the conduct of the party seeking arbitration was inconsistent with an intent to arbitrate. That aligns California with the U.S. Supreme Court’s 2022 decision in Morgan v. Sundance. Filing discovery motions, participating in case management, or sitting on the arbitration clause for months can be enough to forfeit the right, even without harm to the other side.
Unconscionability
The most heavily litigated defense is that the arbitration clause is unconscionable. California courts require both procedural unconscionability (how the agreement was formed) and substantive unconscionability (whether the terms are unfairly one-sided), on a sliding scale where a lot of one can offset a little of the other.
Procedural unconscionability usually turns on whether the signer had any real chance to negotiate. A form contract offered on a take-it-or-leave-it basis satisfies the adhesion element. Courts also look for surprise: an arbitration clause buried in fine print, cross-references to external rules that are not attached, or language that obscures what the signer is giving up. Substantive unconscionability focuses on the terms themselves. Does the clause force the weaker party to arbitrate while letting the stronger party sue in court? Does it impose prohibitive fees, unreasonably short filing windows, or discovery limits that would prevent the weaker party from proving a case?
Scope of the Agreement
Not every dispute between contracting parties falls inside the arbitration clause. Some clauses reach any dispute “arising out of or relating to” the agreement, which is very broad. Others are narrower. When the language is limited or ambiguous, the responding party can argue the dispute was not covered. Courts resolve these questions using ordinary contract interpretation.
Delegation Clauses
Some agreements contain a delegation clause that assigns questions about the arbitration agreement’s own validity to the arbitrator rather than the court. When the evidence of intent to delegate is clear and unmistakable, the court’s role shrinks: it can only consider challenges aimed specifically at the delegation clause itself, not at the broader agreement. Incorporating the rules of a major arbitration provider (which typically give the arbitrator authority over validity disputes) has been held to satisfy that standard. If you plan to attack enforceability, attack the delegation clause first, or the entire fight, including enforceability, goes to the arbitrator.
Statutory Rights
Certain claims involve statutory protections California courts guard carefully, including state anti-discrimination and consumer protection claims. Arbitration of statutory claims is not categorically barred, but a court may refuse to enforce an arbitration agreement whose terms would prevent a party from vindicating statutory rights, for example by capping damages below what a statute allows or eliminating statutory attorney fees.
What Happens After the Court Grants the Petition
The Related Lawsuit Is Stayed
Once the court orders arbitration, any related pending lawsuit goes on hold. Section 1281.4 requires the court to stay the action until arbitration concludes or until an earlier date the court sets.4California Legislative Information. California Code of Civil Procedure 1281.4 The stay applies whether the order to arbitrate came from a California court or one in another state.
Selecting the Arbitrator
If the agreement spells out how to pick the arbitrator, that method controls. If it does not, or if the method fails, either party can ask the court to intervene. Under section 1281.6, the court nominates five candidates from lists supplied by the parties or drawn from an arbitration organization. The parties then have five days to agree on one of the nominees or on anyone else they can agree on. If they cannot agree within five days, the court makes the appointment.5California Legislative Information. California Code CCP – 1281.6
Limited Court Involvement During Arbitration
Between the order compelling arbitration and any post-award proceedings, the court stays largely out of the way. The arbitrator runs the case. Courts can still enter orders to preserve the status quo, such as protecting assets or evidence that might disappear, but they will not review the arbitrator’s procedural rulings or preview the merits.
Can You Appeal the Court’s Ruling
Appeal rights are asymmetric. Section 1294 makes the following orders appealable, among others: an order denying a petition to compel arbitration, an order dismissing a petition to confirm, correct, or vacate an award, an order vacating an award without directing a rehearing, and a final judgment entered under the arbitration title.6California Legislative Information. California Code CCP – 1294 An appeal from the denial of a petition to compel does not automatically stay the underlying lawsuit; the case continues unless the appellate court grants a separate stay.
Missing from the list is an order granting a petition to compel arbitration. A party sent to arbitration against its wishes generally cannot appeal that order immediately. It has to arbitrate and, if it loses, raise its objections in the confirmation or vacation proceedings that follow. The design prevents interlocutory appeals from being used as a delay tactic against an arbitration the party agreed to.