As the old saying goes; the most dangerous person in the room is that guy sitting in the corner by himself not saying anything.

Subordinate loans such as these are extremely dangerous since they are easily wiped out by a first-position foreclosure.

I discuss that issue in a series of articles I wrote... here is a sample:https://gimerlaw.com/the-dangers-of-subject-to-part-2/Hence I only recommend this strategy to those who have access to funds for an immediate full payoff or use subto for savings on transaction costs in connection with buy/rehab/resell.

Dangerous with insulation.

Many investors got caught up in the fervor of 2006-2008 and ended up with "feed the alligator" properties that ate them alive every month.  3 - THINK LONG TERM - nobody knows what the future will bring, so while it is fun to make predictions, it is dangerous to become attached to them. 

My position: Creative financing is a great tool that should be discussed and understood by investors. 100% financing from a position of financial weakness (bad credit, low/no income, low cash reserves) is a tremendously dangerous position to take, and investors should understand that bankruptcy is a likely outcome - maybe even a coin flip, on many such investments. 

It is dangerous.

No travel nurse wants to rent in a dangerous area where their cars will get broken into.

And I know for a fact, every single member of BP, and the entire globe is very concerned about lives in danger now, my phone is blowing up with messages of support from everyone.

If he is feeling threatened setting foot on the property, then all units should be considered dangerous.