While substantial cash flow isn’t due to kick in for another 2 to 3 years, equity buildup is accruing just through loan payback, to say nothing of any increase in equity through a much higher NOI driving the property valuation upward.

The difference between a penalty and interest is that the former is mandated while the latter is accrued or earned.  

If you pay off $50K debt that is accruing at 20%, you are essentially earning a ROI of 20% on your $50K.  

I am a consultant and former solution architect in the cloud computing industry and my goal is to be able to retire early on multiple rental properties and to finance others who are in the business as my capital accrues.  

An auction is scheduled,totaling up all the  outstanding tax liens plus county fees and accrued  interest as an minimum opening auction bid.

Accrued interest can be set aside and a loan reinstated.  

Thus I am behind 24 months and all that interest has been accrued.  

Of course in that case the income from the property accrues to the plan and is not usable for you personally.

If they end up leaving and not paying or don't pay their bills on time and accrue late fees, those companies will follow that person, NOT the landlord.

Let the money sit and accrue compound interest at a fixed rate, multiple times per year.