Soon enough we will be dealing with robots more than we do with humans, and still, many people are concerned about the accuracy of online real estate estimates, which is perfectly understandable. But we live in a world of data and this data is constantly put to work. Reliable appraisal tools are based on constantly updated datasets and consider even the minor factors that can affect the result. For example, Zestimate by Zillow generates estimated home values based on 7.5 million statistical and machine learning models that analyze hundreds of data points on properties. Besides, the standards for the accuracy of machine learning estimation models are this high that even 90% accurate evaluations are not the limit.