Had nothing to do with the very simple economic concept of supply and demand.Jay I got one door that cash flows $1600 a month too with the high rent growth I get in this area.

The aftermath of the Financial Crisis of 2008 proved this to be true (in a manner of speaking).

The Financial Crisis of 2007/2008 took place 3/4ths of a century after the Great Depression. 

With the new tax rules that amount is capped and many people in California will wake up to a very rude awakening in April/May when they expect a tax return payment and instead will be asked to pay additional money to Franchise Tax Board and IRS.With all that I think you would be better off to consider turnkey investments that cash flow from the start in locations with continuing economic and diverse development in more affordable cities and states.

If not please use the actual economic vacancy while calculating NOI.  

There is a domino effect in tough economic times which actually bolstered our business by taking on ex SFH tenants happy to pay our full rent.This is a prime reason, in addition to appreciation reversals, that I will not invest in SFHs.

Of course, it might be more economical to simply run new lines as needed. 

Conversely however, most of the funds have stopped acquisitions, and as inventory is absorbed, I believe we will be able to maintain flat rates with the economic pressure.Lastly, inventory, since that was the question. 

At CC you'll be required to general education but be certain  to work on those classes that give you a business prospective which is economics and accounting.

This does not make any sense at all from an economics perspective.