A partition agreement divides, or partitions, a married couple's community estate into two separate estates. Welcome to Montgomery County, Texas.Discover everything you need to know about Texas separate property agreement forms in this engaging and comprehensive blog. This is a document through which the parties agree that particular property will be "separate property" and will not be divided. Separation of Assets. By written agreement before marriage, the spouses elect into a separate property regime. A marital property partition is an agreement between spouses that allows them to convert community property into the separate property of one spouse. Interpretations of the land description in the contract. The court determined that the landowners' interpretation was the only reasonable interpretation and.