Four Unities

Unity of time.  Title must be acquired at the same time

Unity of interest.  All tenants have equal interest in the property

Unity of title.  Possession must from the same grantor by the same instrument

Unity of possession.  All tenants have equal and undivided possession  (see unity of possession)

 

Joint tenancy and tenancy by the entireties require all 4 unities.  A tenancy in common requires only unity of possession.

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