Have you ever sold your property "over time"?

[Kevin Cardinale]

Have you ever sold your property "over time"?

Bear with me, i'm trying to actually think here. Stand back, this might get messy.

So I have this "buyer" with good credit, ok income, but his expenses to income ratio, only affords him potential loan amounts less than the total cost of a rental property I'm advising him to get. (no i'm not acting as his lawyer, but as a friend)

Have you ever sold a PORTION of an interest in a property, then waited till the 2nd party builds up more cash and then sold them the rest? Is that even possible? Am I crazy?