This is a document through which the parties agree that particular property will be "separate property" and will not be divided. A partition agreement divides, or partitions, a married couple's community estate into two separate estates.Learn More About Texas Partition Deeds and How They Allow a Property to Be Divided Among Coowners, Ending Joint Ownership of the Property. A marital property partition is an agreement between spouses that allows them to convert community property into the separate property of one spouse. Texas Real Estate ATTORNEY. How to win a partition action?