A partition action enables you to force the sale of property when coowners are refusing to sell. Legal separation isn't available in Texas, so couples who would like to end their marriage formally must follow the state's divorce process.This is a document through which the parties agree that particular property will be "separate property" and will not be divided. Texas requires a written agreement to partition. If you end up filing a partition action, you will need copies of the deeds or instruments vesting title in the joint owners.