However in the future because  of how these things tend to go, I would not have called insurance or a remediation company, I would have just fixed it immediately before it got too bad then warned the tenant not to do it again (and to be fair to them it’s odd that simply hanging a picture would cause a major plumbing leak, the likelihood of that happening is so low) and moved on.

What are the best methods and products to tackle these tough cleaning tasks?

Percent of UPB is fairly irrelevant as the buyer will be purchasing the note for cash flow and the rate of return would be his/her major concern $75,000 sale price is 81.5% of UPB, about what I was suggesting using my UPB method.

However, my favorite method is still the simplest: checking the cash in the bank.Each week, I look at the current account balance (minus any outstanding credit card balance), compare it to last month's balance, and even check back to last year’s balance.

Whenever I see a new guru or some "new method" especially, when it comes to mortgages, I always ask, what is this person gaining?

Use the enemy method.

If they are unwilling to use the methods you require, give them the opportunity to move out and start with a new resident. 

In your experience is does the method of prospecting depend on the types of commercial real estate you are interested in working with?! 

This can be a viable option for those who might not qualify for traditional financing methods.

can you achieve the BRRRR method and follow the 1% rule?