1. The fact or condition of being one in number; oneness.
2. At common law, a requirement for the creation of a joint tenancy. • The four unities are interest, possession, time, and title. See joint tenancy under TENANCY. [Cases: Joint Tenancy 1,
3. C.J.S. Estates § 19; Joint Tenancy§§ 2, 4, 6–15, 38–40.] — unitary, adj.
unity of interest. The requirement that all joint tenants’ interests must be identical in nature, extent, and duration.
— Also termed interest unity. [Cases: Joint Tenancy 1,
3. C.J.S. Estates § 19; Joint Tenancy§§ 2, 4, 6–15, 38–40.]
unity of possession. The requirement that each joint tenant must be entitled to possession of the whole property.
— Also termed possession unity. [Cases: Joint Tenancy 1,
3. C.J.S. Estates § 19; Joint Tenancy§§ 2, 4, 6–15, 38–40.]
unity of time. The requirement that all joint tenants’ interests must vest at the same time.
— Also termed time unity. [Cases: Joint Tenancy 1,
3. C.J.S. Estates § 19; Joint Tenancy§§ 2, 4, 6–15, 38–40.]
unity of title. The requirement that all joint tenants must acquire their interests under the same instrument.
— Also termed title unity. [Cases: Joint Tenancy 1,
3. C.J.S. Estates § 19; Joint Tenancy§§ 2, 4, 6–15, 38–40.]
