Joint tenancy is a form of property ownership that often factors into estate planning. If two people own a piece of real estate, for example, they can either be joint tenants or tenants in common. Under the latter, a tenancy in common, each person separately owns his or her share of the property. Thus, when one co-owner dies, his share passes through his estate like any other property. But under a joint tenancy, when a co-owner dies, his or her share simply ceases to exist; the surviving co-owner (or co-owners) acquire full title immediately upon the deceased co-owner’s death. Nothing passes through a will, trust or probate process.
A joint tenancy requires four conditions, known as the “four unities”: (1) the co-owners acquire the property at the same time; (2) the co-owners share identical same title to the property; (3) each co-owner has an identical share of the property; and (4) the co-owners have an equal right to possess the property. If any of these conditions are not met, or cease to exist, there is no longer a joint tenancy, but a tenancy in common.
Recently, the California Court of Appeals addressed a dispute over a joint tenancy that was dissolved shortly before one of the co-tenants died. The surviving co-tenant argued the joint tenancy remained in force. The probate court and the Court of Appeals disagreed. The case is discussed here for informational purposes only.
San Diego Estate Planning Lawyer Blog

