These are sometimes called parking arrangements.

Smoked glass, stained glass, flowers, clouds, etc.

but ONLY if it is a home with ADU or a shared living space (living areas, kitchen or bath) arrangement,  NOT if it is a legal duplex.

The brother in law was fine with the arrangements until recently.

@Sziria Flowers Cold call for a successful investor for free.

When I wholesale to someone I've never worked with before and have no idea whether or not they will flake out, I ask for a portion of the assignment fee as a non refundable deposit.Not to be confused with the earnest money deposit  which I have already paid to the title company when the contract I have with the seller was executed.It's a common practice meant to keep tire kickers at bay.Most serious investors are fine with this arrangement, most who aren't usually turn out to wannabes....which is fine, everyone has to start somewhere, right?

I am on a steep learning curve on this as I had made an offer on a property in New Mexico with this arrangement. 

@Samy Nabhani Perhaps suggest such an arrangement to your broker on your next deal. 

To me, some of this stuff is common sense, but apparently that's a flower that doesn't grow in everybody's garden....Especially when it comes to sharing a bathroom- if you have 2 full bathrooms I would keep a bathroom for myself and let the tenants share a 2nd bathroom between them, especially if you think things not being clean would bother you in the slightest.

Rental management company all ready arrange to take over, tenants ready to move in ready to sign a lease..