Living with your tenants can be very challenging speaking from experience. 

Challenges?

See the chart from Fair Isaac Company (FICO) below: FICO Score Pct of Population Default Probability 800 or more 13.00% 1.00% 750-799 27.00% 1.00% 700-749 18.00% 4.40% 650-699 15.00% 8.90% 600-649 12.00% 15.80% 550-599 8.00% 22.50% 500-549 5.00% 28.40% Less than 499 2.00% 41.00% Source: Fair Isaac CompanyAccording to this chart, investors should use corresponding vacancy+tenant-nonperformance factors of approximately 5% for Class A rentals, 10% for Class B and 20% for Class C.To address Class C payment challenges, many industry "experts" are now selling programs to newbie investors about how Section 8 tenants are the cure.

Challenges?

You're facing a common investor challenge: learning from experience (and sometimes mistakes).

The more you say, the more they can challenge you if it comes to that. 

A 2 hour meeting can go by quickly, with a classroom environment and it can all be totally free!!!

What’s your biggest challenge so far in analyzing those deals?

Good Lord, given what he’s accomplished with his challenges (not just Quest, but also being a very good man), what in the heck is our excuse for doing less?

@Blake McWilliams This is a most challenging problem with both residential and commercial investors.