I bought my house with FHA then refinanced on a conventional loan and since I moved in I have house hacked the mother in law room as an Airbnb which has been netting $1105 per month which has really helped my ability to save.

You could look into renting out a room in your home to traveling nurses since they have shorter term assignments and pay a bit more for fully-furnished housing.Are you planning to stay in TN?

I partnered with my mother in law, she's retired, had plenty of cash, invested with my wife and I, but also invested with others.

I am looking at buying my mother-in-law's house and turning it into a rental. 

To make things worse, he lives in a shared living situation with 2 other families, one is a single individual but the other is a single mother of 2.

My wife inherited four rental structures (two fourplex units, one threplex, and one single family home) from her mother.

My mother-in-law knew the individual selling it.

My best friend's wife and her mother are both agents but not investor agents so hard to go by their word. 

Hi, lets say i fix my mother’s credit and get her to buy a house making it a good deal to cash flow (3 unit) a FHA loan the question is; what can i do to PREVENT her for taking a HELOC, refinance, second mortgage etc on the property?

I am a single mother living in nation most expensive ZIP Code in Silicon Valley where buying is definitely out of the question for me at this point of time.