@Matt Sherman what's the rate on the existing mortgage?  

Acquisition phase, maintenance phase, disposition phase (if I'm remembering the terms for the 3 parts of the cycle correctly).If you're early on in career and looking to increase portfolio, should cash out and buy more with relatively high leverage (while being sure to have solid cash reserves on the side of course).If you're middle career and looking to just maintain portfolio and don't need cash flow from properties, then focusing on building equity in existing properties by using cash flow to pay down loans make sense.Then end career dispose of assets and the sweet equity you hopefully built up by selling outright or owner carry or whatever.I personally would cash out and buy more with leverage, but that's someone in acquisition mode bucket talking.

Also, if that did exist, it most likely wouldn't help sell your property, just look at YouTube comments, typically negative. 

I did not actually know this existed.

Sketchy people exist everywhere, it's up to the individual to define what is sketchy in their eyes.  

I plan to submit offers with very little contingencies - so .. where and how in the contract will the ability to deal with a potential lien or problem exist ?

How should I compare/evaluate an existing apt complex (not my own) vs a condo I'm trying to rent?  

I'd like to add a post to the existing discussion but cannot get to it.Thanks in advance

Is it even legal to not disclose to a buyer that this owner tenant relationship exists?

There are lots of ways to invest that most people don't even know exist, and some of them are very low-risk if, again, you know what you're doing.I hope this helps you a little bit.