I have an "unwritten agreement" with a set of really good tenants that they'd give me a couple months notice if they were going to leave and vice-versa if I was going to sell.

My vice was buying liabilties (New German cars, gadgets, and other crap).

Also, it will give you a chance to see how your personality works with your partner's and vice versa.

He's no more likely to be doing anything illegal out of your unit than any other tenant.As for the safety comparison..... and neighbors...... and "bad people" it attracts...... you can say the exact same thing about alcohol...tobacco......and many other vices our tenants may have.My one emphasis would be the no smoking policy....not because of the substance but because of the damage to the unit from smoke, flame, ash and odorAnd ANY proposed new tenant has to pass the screening....NO EXCEPTIONS..... so if the dad knows that may be an issue down the line, it needs to be addressed now as a problem.

A Staten Island expert will probably tell you they know absolutely nothing about the market in Saratoga or Buffalo, and vice-versa. 

What might be a "deal" in Colorado Springs might not be considered a deal elsewhere, and vice versa.

What makes a good purchase in the Midwest does not necessarily make a good purchase in CA and vice versus.  

So it's hard to make generalizations like "loans are better than credit cards" or vice versa.It really comes down to the terms, and the total financing costs. 

So technically it IS a different "account" under the same "profile".Go under your "profile" and you'll see that you can "switch to traveling" if you are hosting or vice versa "switch to hosting" when you are in the traveler account.Hope this helps.

You could have the owner finance a first mortgage and your hard money finance a second mortgage, or vice versa.