Partition is the legal term referring to division of real property interests among co-owners (tenants in common). When two or more owners cannot agree on the disposition of the property in question, any of the owners can file a partition action in the appropriate court.Through a partition, co-ownership is converted into sole ownership and therefore one person gives up their common interest for a separate interest. How to fill out the Understanding Partition Actions for Real Property? 1. Review the ownership details. 2. The act gives heirs who do not want to sell the property the option to buy out those who want to sell the property.