A party to an arbitration agreement may petition the court to consolidate separate arbitration proceedings, and the court may order consolidation of separate arbitration proceedings when:
§ 1281.3.Consolidation of Separate Arbitration Proceedings
Title 9. Arbitration · Chapter 2. Enforcement of Arbitration Agreements · Enacted 1978 · no amendments on record · Last verified July 29, 2026
In one sentenceSection 1281.3 lets a court consolidate separate arbitration proceedings that arise from the same or related transactions and share common issues creating a risk of conflicting rulings, choosing among the agreements' named arbitrators or appointing one under Section 1281.6, while remaining free to deny or limit consolidation.
Full Text of § 1281.3
(1) Separate arbitration agreements or proceedings exist between the same parties; or one party is a party to a separate arbitration agreement or proceeding with a third party; and
(2) The disputes arise from the same transactions or series of related transactions; and
(3) There is common issue or issues of law or fact creating the possibility of conflicting rulings by more than one arbitrator or panel of arbitrators.
If all of the applicable arbitration agreements name the same arbitrator, arbitration panel, or arbitration tribunal, the court, if it orders consolidation, shall order all matters to be heard before the arbitrator, panel, or tribunal agreed to by the parties. If the applicable arbitration agreements name separate arbitrators, panels, or tribunals, the court, if it orders consolidation, shall, in the absence of an agreed method of selection by all parties to the consolidated arbitration, appoint an arbitrator in accord with the procedures set forth in Section 1281.6.
In the event that the arbitration agreements in consolidated proceedings contain inconsistent provisions, the court shall resolve such conflicts and determine the rights and duties of the various parties to achieve substantial justice under all the circumstances.
The court may exercise its discretion under this section to deny consolidation of separate arbitration proceedings or to consolidate separate arbitration proceedings only as to certain issues, leaving other issues to be resolved in separate proceedings.
This section shall not be applicable to an agreement to arbitrate disputes as to the professional negligence of a health care provider made pursuant to Section 1295.
Plain-English Summary
Related disputes sometimes end up split across separate arbitration agreements or proceedings -- the same parties under two contracts, or one party facing separate arbitrations with different counterparties over the same events. This section lets a party petition the court to bring those proceedings together, and lets the court order it, when the disputes arise from the same or related transactions and share a common issue of law or fact that could otherwise produce conflicting rulings from different arbitrators or panels.
When every agreement names the same arbitrator, panel, or tribunal, consolidation is simple -- everything goes before that shared decisionmaker. When the agreements name different arbitrators and the parties can't agree on their own method for the consolidated case, the court appoints an arbitrator following the procedure in § 1281.6. If the agreements conflict with each other in other ways, the court resolves those conflicts to reach a result that's fair to everyone involved.
Consolidation isn't automatic, even when the statutory conditions are met. The court retains discretion to deny it altogether, or to consolidate only some issues while leaving others for separate proceedings. This section doesn't apply to arbitration agreements covering a health care provider's professional negligence under § 1295.
Frequently Asked Questions
When can separate arbitration proceedings be consolidated?
When they arise from the same or related transactions and share a common issue of law or fact that creates a risk of conflicting rulings by different arbitrators or panels.
Which arbitrator hears a consolidated arbitration?
If all agreements name the same arbitrator or panel, that one hears everything. If they name different arbitrators and the parties can't agree, the court appoints one under § 1281.6.
Is consolidation mandatory once the statutory conditions are satisfied?
No. The court retains discretion to deny consolidation entirely, or to consolidate only certain issues.
Does this section apply to medical malpractice arbitration?
No. It doesn't apply to arbitration agreements covering a health care provider's professional negligence under § 1295.
Amendment History
Added by Stats. 1978, Ch. 260.
Source & verification. Section text is reproduced verbatim from
the Deering's California Codes Annotated / vLex. Enacted by the California Legislature.
Last verified July 29, 2026.
· Official source
Also known as: consolidating arbitration proceedings californiamultiple arbitration same transaction