These are not credit rating derived, so there are no restrictions to their use.

I did not see how rent rates are derived in any reply.

Can i use these rental numbers to derive cash flow for the properties in Chandler/Gilbert/Goodyear? 

In your 1500 sf home it is $6.67/sf.If $20/sf was derived from a 1500 sf home and you try to use that square foot price on the 1000 sf home, you have a $3300 problem.  

They derive enjoyment from a fancy car, like other people enjoy traveling or electronic gadgets.

It is amazing how little maintenance items can add up.I derived the $250/month cap expense by filling out a spreadsheet with expected costs and expected lifespans but I was hopefully conservative in my numbers.Basically I would rather over estimate expenses than underestimate expenses. 

Also, appraisers are fine but they have to live within such regulated box that they sometimes fail see the real comps and especially fail to where additional value can be derived.

Sometimes folks get Cap(italization) Rates and ROI confused, or use them interchangeably when they aren't interchangeable.If investors are paying 10% cap rates for buildings like yours, raising rent isn't going to change the cap rate you get, but your ROI will increase and the value of the building will increase due to the higher NOI.May folks know the quick and dirty way to calculate a cap rate (NOI/value), but not many have seen how to derive a cap rate.  

I am assuming that you're referring to some sort of calculation in which you use the fair market value of their interests and feed into some sort of discount or premium to derive an exit value.

This works well since investor's K-1s can be derived from an 8825 and you can scale to thousands of discrete apartment properties relatively easily.