You are a shark among the clownfish! 

I was trying to gage the gross income and the occupancy rate was one of the slots in my AirBnB calculator.

that some investors have used electronic door deadbolts with the buttons for the passcode as well as the key slot, to eliminate tenants from calling you to let them in if they forgot their keys etc.

Like saying, less than a million people are bitten by sharks every year.

I feared the agent or seller could take the money through some clause in the contract like a shark.

I will tell you that the sharks are already out there.

Suggest you only use your FHA mortgage slot to buy a 4 plex at your age in that location its about doors.

If a property appears vacant i will try to look in the front window, or even the mail slot. 

Had I come across this in year one I would have either passed or tried to wholesale it only to have a shark rehabber convince me it was only worth a $1k finder's fee - lol.

Yikes, 30% APR is worse than blood money from a loan shark.