We have provided free online forms for partition actions that should only be used in conjunction with a partition attorney in California. A California partition action happens when one co-owner of real property wants to sell but other co-owners do not want to sell their ownership rights.A partition action enables you to force the sale of property when coowners are refusing to sell. To initiate a partition action in California, a co-owner must file a lawsuit in the appropriate court and name all other co-owners as defendants. Section 875.260 is intended merely to supply some detail with respect to the powers of the court in a partition sale. In other words, any co-owner can force the sale of the property. Taylor, 8301 Utica Avenue, Suite 201, Rancho. Owner can force partition despite an agreement giving each coowner a right of first refusal.