A partition action allows a joint owner to obtain a court order to divide the property, which allows them to sell their portion of the property. A partition action can be taken that will allow Arizona courts to assume responsibility for determining the most suitable way of apportioning the estate.The first step in a partition action after filing the lawsuit is the court appointment of a neutral third-party to sell the real property. A Judgment of Partition declares who owns what interest in the land, and orders the land to be partitioned (divided) or sold.