The book Millionaire Real Estate Investor says Criteria is non negotiable.

@Silvie Truong A few thoughts based on your post, in no particular order:- If the true amount of the damages and what they owed you was $18k, you should never have billed them for $1,500. 

@Leroy Feireira-shearinIt's the best way to find non-competition deals.

Ben Franklins in non sequential order . 

One question I did have that I find very relevant and a big determinant in choosing what property to purchase and that would be what to charge for rent and how to determine whether or not a particular property is worth purchasing based on its income. 

If you find yourself in court you will be held to a higher standard and could lose if determined that you used your superior knowledge to take advantage of a non-licensed person.

It is the later non-owner occupant ones that can get more challenging with loan limitations like having to use portfolio lenders after 10 loans on your social security number, DSCR, reserve requirements, etc.

I know I can't mix the two in a single note, but can I mix IRA and non-IRA money in the same fund?

I can't tell you how many non-legal leases I've seen over the years. 

Has anyone been able to build a non-traditional house (storage container, tiny home, modular,etc..) and have it pass under-writing standards?