Appears to no longer have any use in land law or even in the common law except to describe the real properties which are connected by easement; the dominant tenement and the servient tenement.
In W. J. Byrne's A Dictionary of English Law (London: Sweet & Maxwell, 1923), he describes a tenement as:
"... a thing which is the subject of tenure....
"In popular language, tenement means a house. And in modern statutes it sometimes has that meaning."