It will tell you it's own rating on accuracy for specific cities.

IMO, rules of thumb are easier but they lack the other aspects of accuracy and costing.

Trusting anyone on those will only come with your own experience and their proven accuracy over time.In my home market, its very difficult to find a good deal straight off the MLS.

You would need to quantify aspects of location, market influences (rentablity), these are all subjective, lots of experience would be required an even at that, there is no way to really check deviations without a large population to consider.Management is another issue, you can quantify your management, time, efforts, phone calls, interviews, etc. and come to a value, but you can't with properties owned by others and be accurate, I'd say if you apply your costs to other properties you'd be closer.When I taught finance and economics 101/102, long, long ago, the text covered applicability of analysis, the benefits as opposed to the efforts, time, expense as an opportunity cost to obtaining the findings and the accuracy of those findings.

If you are looking at these websites that pull values out of a magic box, then you will have little confidence in its accuracy.

To review, I'm suggesting, and you can correct me if I'm wrong, that, as a buyer, after acceptance of your offer, if you fail to bring your emd to escrow within the CAR form default of 3 business days, that the seller is contractually limited to issuing buyer a written notice to perform, wherein, the notice to perform limits seller to the right to cancel the already accepted contract with no rights to keep the emd (which he (escrow) never received btw) and no rights to claims of damage and no rights to specific performance and no rights to your first born, etc.Regardless of the contractual accuracy of what I'm saying, this is how serious investors are making non-contingent offers in CA to be competitive.

According to Zillow’s own Zestimate data accuracy report, they have a median error rate of 6.9%.

Knowing the area can give you a better idea of the accuracy of the zillow value.

To get the most accuracy, how do most folks estimate property taxes?

According to Zillow’s own Zestimate data accuracy report, they have a median error rate of 6.9%.