1. A computer implemented method for confidence scoring of predicted property values, the method comprising: receiving a predicted property value for a given property, the predicted property value being determined by a computer based upon application of a plurality of property value prediction models, wherein the predicted property value is determined as a weighted combination of the plurality of property value prediction models; determining a set of values corresponding to input factors for each of the plurality of property value prediction models; determining, by the computer, a set of model parameters for a confidence scoring model based upon the set of values; and automatically calculating, by the computer, a confidence score for the predicted property value, the predicted property value being separately determined as the weighted combination of the plurality of property value prediction models, by using the confidence scoring model and the determined set of model parameters, wherein calculating the confidence score implements a logistic regression that provides an accuracy probability as a function of the set of values and the model parameters.