Given their poor execution, I asked him what would it take to cut the loses and pay the principal back and he said it would result in 50% loss of principal.

As when people lose their jobs, the vacations they take is the first choice to cut back on. 

WE are seeing this in the Portland market.Montgomery Park the largest office complex in the state that sold about 7 years ago for 250 mil just got bought ( after no one bid it at foreclosure) for 25 mil by Menashe family. its over 1 million sq ft.. dont think you can lose on something like that. reminds me of the buys in 2010 in some markets were sfr's were selling for 1/4 of replacement costs..

Learning that the slower I move, the more money I lose.

Quote from @Matt Meier: If I were to do this, wouldn't the lender lose out on their commission? 

1) Yiu REALLY need to know what CA will  allow you to do, I don’t know, but the state may say too bad landlord, you lose. 2) Assuming your attorney (Or you if you’re able to decode the laws that relate to your situation and are willing to go to court in front of a judge against a “sick” kid.) think you have the right to collect the rent I’d give them two options. 

Let's assume that the neighborhood is a C class and the median income of the city is greater than 3X of the market rent.Here are some of the considerations I've come up with so far:- Units are in need of renovation and capex is too high or not available- Unit quality is not the same as market - Seller is worried about losing tenants due to increase- Vacancy rates are high or filling units have been difficult- Rent increase would take multiple increases over multiple lease periods to get to market rate if seller is trying to retain the same tenant- Seller inherited property and just want to liquidate- Seller needs to liquidate quickly (financial burden, sickness, quick exit from land-lording)It seems like I might be missing a warning sign about a deal if they are selling with current rents that are under market; but again, this seems to be most of the properties I've underwritten.And in the same vein, what should I be worried about when purchasing a deal with under market rent with the intention of raising them after purchase. 

Meaning if the borrower stops making their payments the investor can lose all of their investment.

So at this point, no, you cannot pass the cost on to the consumer - this would place you above market rent and you will lose money through vacancy.

And this is a biggee wading through the fake lenders or the Joker brokers that tell you what you want to hear  but cant get the deals funded and you lose the deal and a lot of money.3. with actual PML  private people  usually have very limited funds so cant scale with them.. they can have a life event and just stop doing loans all together..