A partition action is a legal remedy used when coowners of a property cannot come to an agreement on how to divide or manage the property. A partition action is a type of lawsuit pertaining to joint owners of real property.A partition action takes the dispute to the courts. To initiate a partition action, the petitioner must file a complaint with the appropriate court that describes the property involved. Through the partition action, the property in question is fairly divided or the proceeds from the sale evenly distributed. The UPHPA seeks to protect owners who have recently inherited real property from an estate. Get expert advice on filing a pro se partition action in Queens. A partition action is a legal proceeding in which a court determines how to divide co-owned real property. Complaint Verification. PDF.