Your guess at your expected cap rate will be based on the accuracy of your experience in the/that market, it's an estimate and not the basis for an investment decision.

Also view the "Data Coverage and Zestimate Accuracy" section.

However, the common sentiment in the investor community seems to be that the bill will pass and they will completely phase out Type 2 and 3 permits over the next couple years.Don't quote me on this exactly on accuracy.

As your location "Matures" say around 3 years and 95% accuracy; you start getting return customers and recommended customers. 

What other metrics can I use to compare the accuracy of their site?

Does anyone have any experience or feedback on this site and the accuracy of their rent estimates?  

I think you have much more control (for lack of a better term) in real estate than the stock market and the ability to apply leverage and have multiple income streams create a more broad and profitable vehicle in my opinion but you could also state with some accuracy that I have bias.That said, I would be more concerned with your second post.

So although i can not tell you how they officially calculate the property value for either company, please understand that the accuracy of any evaluation is in the root data.

Do you have any knowledge to determine the accuracy of the "projections"....Reno costs, sales price, etc.?  

I would like to see what more seasoned investors think about that accuracy of the Rentometer website, when determining expected income?