I'd be surprised if that is even close to being accurate.

Your numbers need to be pretty accurate to be successful.

The property would be a good addition to my portfolio but I am not sure how to accurately estimate the value due to the poor record keeping by the owner. 

This includes economists with Ph.Ds, some of whom may very well be netting $1bn and drinking with Buffett, in which case we should ask why they are posting about it on biggerpockets rather than turning that $1bn/yr into $2bn/yr.If on the West Coast, a short-term day-trading predictor that is >45% but <60% accurate is the 10 year tnote.

Estimates, of course, but seemingly accurate approximations for this scenario. 

If you've learned the terminology, learned how to run the numbers (accurately), figured out a strategy that works for you and have a realistic idea of the rental rates in your market, then just do it.

I've found the results shown at https://www.rentometer.com/ are generally pretty accurate.  

Just curious if anyone uses a website other than county tax websites to obtain accurate data for a yellow letter campaign.

Don't use our company's rates, they're not accurate for two reasons, one is just because this is LA, and second is, we are dealing with 200-500k constracts.

Thanks for your insight to both of you.Yes it would be maybe more accurate to call it cash on cash.Well Memphis does seem to have interesting properties to buy if one's interested in cashflow.