I thought "bisy" pointed at people and "kesy" at things... When using "kesy" in this sentence, doesn't that exclude the meaning of "family", making the meaning of the sentence "This is John's HOUSE" (or what have I misunderstood...?
"Family" is an abstract concept. I think "animate" is only for "animate" things like actual persons or animals, not concepts like "family" or "company".