Okay Jesus fucking Christ, let's do some leftist Karl Marx 101 cause y'all need it.
Okay, so while this can be complicated a lot more, people can be broken down into two distinct classes. The owner class, who owns things, and the working class, who doesn't own things, and thus has to trade their time for it.
A person comes into possession of a house. They can do one of two things with it. They can live in it, and thus it becomes personal property, or they can rent it, and thus it becomes private property, that is, something that generates wealth. This can apply for part or all of a house, it doesn't matter.
Now, if that person comes into possession via a bank loan, then the bank technically owns the house, however, it still is something they can exercise as private property, that is, extract wealth from.
(Con't)