The normal way to give the equivalent of French chez = at the place of, home of, business of, etc. (from Latin casa) in Black English is to use one person’s name with “and them’s” Referring to the people, one will say, “Joe n them”, but for at the house of or such, Joe n them’s is normal. The ‘s is an example of the so-called “group genitive” in English, as in “The girl across the street’s bicycle.”