When credit dried up and property values decreased, those people were suddenly underwater and on their way to insolvency. 

More media exposure, HGTV, etc have increased the demand of "why don't I try that" people so prices on active markets have increased so it appears margins are decreasing. 

I understand their property values decrease, but do their tenants all of the sudden stop paying rent? 

We're at that time of the year where prices are going to be decreasing over the next few months, not increasing.

In our county the taxes jump substantially the year following the purchases, but then only like 1 1/2% per year after that until a fair value assessment is reached and then slight decreases every year after that.   

My thinking is that there is room to raise rents, perhaps screen for better tenants that take care of the place and decrease the maintenance cost and get the NOI up above $100k/yr. 

While Arena calls his critics retrograde and implies racism (many of whom probably are), I personally find it understandable on a financial/psychological level that empathy diminishes when an event like that stands to decrease the value of the biggest investment (a home) you're likely to make in your life. 

@Joe Villeneuve I use the expected cash flow and any refinance events I get a lump sum of cash in 7 years and then the monthly cash flow decreases accordingly compared to the 30 year where I wouldn’t be able to refinance, I have to track the equity in each loan to assume when to incoprate a refinance.

I knew 1031 was not an option, but looking for options to utilize the funds for real estate investment and decrease the tax hit.

The original numbers for each park looked good to me, but when I added 3% vacancy, 5% capEx, and note payments, my cash flow decreased significantly.