There is likely a phone number and persons name that will come up, that you can reference, since he is having bills that arrive to the mailbox and packages to the door with his name on them.You could make it a pre-condition to the seller that he allow a background check on the tenant before closing and your offer is contingent on your approval.Neighbors typically know what's going on in the neighborhood and will know who the guy is and if he is a trouble maker.He probably has a car and a private detective can run the plates.And so on.The information is readily available is the knowledge is worth knowing.

Do you want to close in your personal name or in an business entity? 

Hi Jeff, @David Ramirez is a great person to connect with!

Looking at my first property and there is a severely intense odor in the basement (concrete) and some slight orders on the other levels of the house as well (hardwood floors and carpet).

You have a $145k-$150k house that you paid $140k for, this isn't rocket science.

. :)If you are trying to market specifically to investors, join local investor groups (in person or on facebook).

For instance, a lot of our house-hacking clients in Denver or Colorado Springs want a home with a basement apartment.

I personally worked all around the cities right outside Detroit; Warren, Roseville, bad side of Southfield, bad side of Sterling Heights, etc.  

Investigate government programs such as HUD, USDA, and FHA loans, select investment techniques such as house hacking, turnkey homes, or purchase and hold, and assess properties using tools such as Grants.gov, HUD.gov, and BiggerPockets.Good luck!

If someone injures themselves and sues, they will be suing the LLC and not you personally.