Obviously you can compare to the near by market to estimate, but can you get to a more accurate number?

I recommend contacting a few that have absolutely no connection with who you are purchasing the property from to make sure your projections of rent and the area are accurate.

Do you know how to accurately calculate and divide up the costs to NNN it?

Then you can get a more accurate sense of who you are hiring as well as how their work ethic is so you’ll know ahead of time what you’re getting yourself into. 

I think I found a Deal but one of the things that makes me not moving forward with it is not being sure about the numbers. The asking price is 370,000 and the comps go anywhere between 270,000 up to 490,000 in a .5 mi...

At the auction, I’d expect this to likely go for $350-$425k, IF your value and rehab estimate are accurate.

If, however, you purchased the property for $100k under market value, and you believe that its value will go up another $100k in 5 years, you're a gambling man, but at least you know what you did and the risk involved with gambling.

It's free and I usually am able to get a 50% success rate finding accurate phone numbers

The truth is I need this cash flow now and the Refinancingt cannot happen now so might need to gamble I suppose.

The assessor information on the property is not accurate; sqft off and bedrooms/bathroom off.