Is there a method to accurately predict arv accurately without having to leverage your own years of experience?

You'll get the most accurate advice and guidance from someone who walks the walk, not just talks the talk.

Consumer self reported scores are generally accurate on the very high end (790 reported v 820 actual = same interest rate pricing, no difference), and very accurate the very low end (480 reported v 498 actual = no Agency mortgage either way). 

Renovate your current kitchen, take the family to disneyland, gamble it away in vegas, or buy another investment property. 

@Michael Woodruff I'm completely new, in the total sense of the word, but what Abel said was 100% accurate....

This is pretty complicated and in order to get even close to an accurate answer your question, you'll need to provide the filing/recording dates of the mortgage/deed of trust as well as the FTLs.

You're not gonna get an accurate price online by just saying the sq footage.

The question is the return accurate?

As for rents, I have received the same estimates from 4 sources so hopefully it’s accurate but I guess we will see.

Yet, there are so many online platforms such as Trulia heatmaps, Redfin, Eppraisal, Zillow, etc. to estimate what the Median Price Range is for a given market's city...so if finding this info online is feasible in that regard, where can I find it and which is most accurate?