A partition agreement divides, or partitions, a married couple's community estate into two separate estates. This is a document through which the parties agree that particular property will be "separate property" and will not be divided.Partition is the legal term referring to division of real property interests among co-owners (tenants in common). How do I fill this out? To fill out this document, first gather all relevant property information. A plain language, highly structured agreement for professional services. Use for single or multi-project engagements with or without deliverables. Very generally, the partition of real property is the division of previously undivided interests among joint owners or cotenants1.