New York Laws
Part 2 - Estates Classified as to Number of Persons
6-2.1 - Estates in Severalty, Joint Tenancy, Tenancy by the Entirety and in Common

(1) In severalty.
(2) Joint tenancy.
(3) Tenancy in common.
(4) Only as to real property and, on and after January first, nineteen
hundred ninety-six, as to the shares of stock of a cooperative apartment
corporation allocated to an apartment or unit together with the
appurtenant proprietary lease, tenancy by the entirety.