A legal fiction left over
from common law—a creation of a unity for joint tenancy or ownership. The four
unities are interest, possession, time, and title. See also joint
unity of interest
Requires that each and every joint tenant’s interests are identical in
kind, breadth, and time.
unity of possession
The necessity that each joint tenant must be entitled to possess the
whole property in its entirety.
unity of time
The necessity that all joint tenants’ individual interests must vest
unity of title
Requires that all
joint tenants acquire their interests by means of a single document.