They are referred to as Special Purpose Business Loans and they are made used for investor properties (fix and flip, new construction, rental, AirBnb) Hope that helps!

(For reference, one of my rentals is a ~$50k SFH in Detroit, and most banks won't refinance anything worth less than $100k.)So with that in mind, do any of you have any experience in doing this or something similar?

It is too late in the game now, but for future reference. 

I am referring to smaller cities in more unpopulated states.

Search Ben leybovich for good references on how to think that through. 

A "Full" BRRRR is usually referred to when the entire initial cash investment is pulled out at the refinance stage.

@Bill Brandt ya yours is the market I was referring to with the crazy, crazy reference.

I've done some reading in psychology, particularly in reference to proformance psychology, psycopathologies, and theory of knowledge.

I would definitely ask your realtor for references or you may need to start cold calling.

While I agree with you that it 'might' not be the best business practice, I'm genuinely curious-- which law(s) you are referring to that would be violated by the actions you mentioned above?