The good news is that if there is an impending downturn, you aren't holding any properties that decrease in value.

You can even get the buyer to pay up to 4% in closing costs (towards points) allowing you to INCREASE the purchase price while DECREASING the monthly mortgage. 

Have you done stress tests (worse case, best case, average case scenarios) on rent decreases, sudden expenses, increased vacancy rates, sudden and large rises in interest rates, property taxes, insurance on your existing properties and potential deals? 

Phrased another way - is there a reliable way to determine the price of privacy offered by a SFP and decrement this price as privacy decreases?

A price decrease is a price decrease, but compared to most of the country, that is pretty amazing.

You could still count the above market rent towards decreasing the purchase price, it would just be that a normal down payment on that purchase price will be required.So this probably isn't much use in hotter markets like the Bay Area, but for those of you out in places where rent doesn't go up a zillion percent per year, this could be viable.

Then not only will your bank account be decreasing monthly, you'd have to deal with pissed off tenants... compounding the problem.

In recent years, there was a significant disparity due to the decreased home prices. 

At the most basic level, the higher interest rate on my investment purchases means that my monthly mortgage payment is going to increase, which means a DECREASE in monthly cash-flow.Theoretically though, a rising interest rate for home-buyers could mean fewer people can afford to buy their own homes and will be forced to rent longer... which means rents could increase with that demand...

He took off more than half a month's rent because of all the issues here with the house.Honestly, we weren't looking for a decrease in rent at all.