ARTICLE 4. Cross-Complaints [428.10. - 428.80.]

Cal. Code of Civil Procedure - CCP 4.

in effect

Cal. Code of Civil Procedure - CCP § 428.10. Section 428.10.

A party against whom a cause of action has been asserted in a complaint or cross-complaint may file a cross-complaint setting forth either or both of the following: (a) Any cause of action he has against any of the parties who filed the complaint or cross-complaint against him. Nothing in this subdivision authorizes the filing of a cross-complaint against the plaintiff in an action commenced under Title 7 (commencing with Section 1230.010) of Part 3. (b) Any cause of action he has against a person alleged to be liable thereon, whether or not such person is already a party to the action, if the cause of action asserted in his cross-complaint (1) arises out of the same transaction, occurrence, or series of transactions or occurrences as the cause brought against him or (2) asserts a claim, right, or interest in the property or controversy which is the subject of the cause brought against him.

Cal. Code of Civil Procedure - CCP § 428.20. Section 428.20.

When a person files a cross-complaint as authorized by Section 428.10, he may join any person as a cross-complainant or cross-defendant, whether or not such person is already a party to the action, if, had the cross-complaint been filed as an independent action, the joinder of that party would have been permitted by the statutes governing joinder of parties.

Cal. Code of Civil Procedure - CCP § 428.30. Section 428.30.

Where a person files a cross-complaint as authorized by Section 428.10, he may unite with the cause of action asserted in the cross-complaint any other causes of action he has against any of the cross-defendants, other than the plaintiff in an eminent domain proceeding, whether or not such cross-defendant is already a party to the action.

Cal. Code of Civil Procedure - CCP § 428.40. Section 428.40.

The cross-complaint shall be a separate document.

Cal. Code of Civil Procedure - CCP § 428.50. Section 428.50.

(a) A party shall file a cross-complaint against any of the parties who filed the complaint or cross-complaint against him or her before or at the same time as the answer to the complaint or cross-complaint. (b) Any other cross-complaint may be filed at any time before the court has set a date for trial. (c) A party shall obtain leave of court to file any cross-complaint except one filed within the time specified in subdivision (a) or (b). Leave may be granted in the interest of justice at any time during the course of the action.

Cal. Code of Civil Procedure - CCP § 428.60. Section 428.60.

A cross-complaint shall be served on each of the parties in an action in the following manner: (1) If a party has not appeared in the action, a summons upon the cross-complaint shall be issued and served upon him in the same manner as upon commencement of an original action. (2) If a party has appeared in the action, the cross-complaint shall be served upon his attorney, or upon the party if he has appeared without an attorney, in the manner provided for service of summons or in the manner provided by Chapter 5 (commencing with Section 1010) of Title 14 of Part 2 of this code.

Cal. Code of Civil Procedure - CCP § 428.70. Section 428.70.

(a) As used in this section: (1) “Third-party plaintiff” means a person against whom a cause of action has been asserted in a complaint or cross-complaint, who claims the right to recover all or part of any amounts for which he may be held liable on such cause of action from a third person, and who files a cross-complaint stating such claim as a cause of action against the third person. (2) “Third-party defendant” means the person who is alleged in a cross-complaint filed by a third-party plaintiff to be liable to the third-party plaintiff if the third-party plaintiff is held liable on the claim against him. (b) In addition to the other rights and duties a third-party defendant has under this article, he may, at the time he files his answer to the cross-complaint, file as a separate document a special answer alleging against the person who asserted the cause of action against the third-party plaintiff any defenses which the third-party plaintiff has to such cause of action. The special answer shall be served on the third-party plaintiff and on the person who asserted the cause of action against the third-party plaintiff.

Cal. Code of Civil Procedure - CCP § 428.80. Section 428.80.

The counterclaim is abolished. Any cause of action that formerly was asserted by a counterclaim shall be asserted by a cross-complaint. Where any statute refers to asserting a cause of action as a counterclaim, such cause shall be asserted as a cross-complaint. The erroneous designation of a pleading as a counterclaim shall not affect its validity, but such pleading shall be deemed to be a cross-complaint.

Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026