From California to Connecticut: Examining House Price Models for the USA. Chaitra H. Nagaraja The Wharton School Abstract: Models to predict house prices come in all flavors. In the repeat sales setup, homes that have been sold only once are omitted from the analysis. However, these single sales often constitute a substantial proportion of the data. The proposed repeat sales model eliminates this weakness. The model is composed of a fixed time effect combined with an autoregressive component. The latter piece is applied only to homes sold repeatedly while the former component utilizes all of the data. To evaluate the proposed model, single-family home sales for twenty U.S. metropolitan areas regions are analyzed. The proposed model is shown to have better predictive abilities than the established S&P/Case-Shiller model. Finally, the special case of Los Angeles, CA is discussed as an example of history repeating itself in regards to the current housing market meltdown.