Unity

An agreement or coincidence of certain qualities in the title of a joint-estate or an estate in common. In a joint-estate there must exist four unities: that of interest, that of title, and, therefore, their estates must be created by one and the same act; that of time, for their estates must be vested at one and the same tout, or by the half or moiety and by all: that is, each of them has an entire possession as well of every parcel as of the whole; 2 Bla. Com. 170. Coparceners must have the unities of interest, title, and possession. In tenancies In common, the unity of possession is alone required; 2 Bla. Com. 192. See Estate in Common; Estate in Coparcenary; Estate of Joint-Tenancy; Tenant.