Seems like it could be a tool to fix a lot of variation in this industry?

Variations of this have been used for about 25 years that I know of and recently (last year) congress attempted to reinstitute this provision as a more favorable method to deal with foreclosure, but according to my Senator, Senator Clare McCaskell, it did not pass.

Some investors do not even want COC.They want a zero cash flow deal for a tax shelter.Depreciation can be manipulated to the owners benefit by changing the schedule to different variations with cost segregation.For instance you could get a land appraisal separate from the building and get the value low so that you can depreciate a higher value with the building over time versus the standard 80/20 (building/land) that many use.It is a meeting you need with your CPA to discuss strategy.

I have an idea of having a portfolio of 100+ properties in variations of SFR, Commercial (appts and duplex).

There can be huge variations.

Some variations exist depending on property type and the info you posted makes it look like a solid deal but here's the MILLION DOLLAR question..... 

WEAR A RESPIRATOR WITH ORGANIC VAPOR CARTRIDGES.The new stuff will usually blend well enough into the old stuff to pass muster, especially on a parquet floor with all the variations in shading.

I follow a minor variation of what was suggested by above by @Paul Sandhu in that I don't do deposits and I charge a combined cleaning and damage waiver for all guests.  

I can understand how with multiple properties you'd not want to be calling all the owners with requests for $ variations for time/rates.

There are some NEW loan programs out that I may not be familiar with, since to date there are hundreds of variations.