Hedonic Models of Real Estate Prices: GAM and Environmental Factors

Jason R. Bailey, Davide Lauria, W. Brent Lindquist, Stefan Mittnik and Svetlozar T. Rachev

Papers from arXiv.org

Abstract: We consider the use of P-spline generalized additive hedonic models for real estate prices in large U.S. cities, contrasting their predictive efficiency against linear and polynomial based generalized linear models. Using intrinsic and extrinsic factors available from Redfin, we show that GAM models are capable of describing 84% to 92% of the variance in the expected ln(sales price), based upon 2021 data. As climate change is becoming increasingly important, we utilized the GAM model to examine the significance of environmental factors in two urban centers on the northwest coast. The results indicate city dependent differences in the significance of environmental factors. We find that inclusion of the environmental factors increases the adjusted R-squared of the GAM model by less than one percent.

Date: 2022-10
New Economics Papers: this item is included in nep-env and nep-ure
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