Customer Name = use this for Property.

Add Job = the Owner.

Add Job = the Next owner.

Each of these has their Start Date = they Own it. There is End date = they Sold it. And now you have different Customer:Job names, which means you can be tracking what one person owes, or one person prepaid and is owed back.

When the house sells, you do not Change anything. That is New Job, under Customer (which is that Property).