Abstract
Urban housing markets, along with markets of other assets, universally exhibit periods of strong price increases followed by sharp corrections. The mechanisms generating such non-linearities are not yet well understood. We develop an agent-based model populated by a large number of heterogeneous households. The agents’ behavioral rules are consistent with the concept of bounded rationality. The model is calibrated using several large and distributed datasets of the Greater Sydney region (demographic, economic and financial) across three specific and diverse periods since 2006. The model is not only capable of explaining price dynamics during these periods, but also reproduces the novel behavior actually observed immediately prior to the market peak in 2017, namely a sharp increase in the variability of prices. This novel behavior is related to a combination of trend-following aptitude of the household agents (herding) and their collective propensity to borrow. Trend-following behavior is found to be essential in replicating market dynamics.
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All data needed to evaluate the conclusions in the paper are present or referred to in the paper. The reference data for housing transactions are owned by CoreLogic, Inc. Additional information related to this paper may be requested from the authors.
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Acknowledgements
Authors thank Markus Brede and Doyne J. Farmer for useful comments on the paper draft. Data on housing transactions are supplied by Securities Industry Research Centre of Asia-Pacific (SIRCA) on behalf of CoreLogic, Inc. (Sydney, Australia). We also acknowledge the Australian Bureau of Statistics for the access to Census data and the Melbourne Institute for the access to the “Household, Income and Labour Dynamics in Australia” Survey.
Funding
This work is supported by the Australian Research Council Discovery Project DP170102927 for MH and MP and by University of Sydney Mobility Scheme-2019 for KG.
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KG analyzed the source data, developed the software code, performed and analyzed the simulations, and prepared the manuscript (“Model”, “Implementation”, and “Results” sections, Figures, and Tables); KG, MP, and MH developed the model; AC consulted on agent-based modeling; PO consulted on economic modeling; all authors contributed to “Introduction”, “Related works”, and “Discussion” sections of the manuscript.
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Glavatskiy, K.S., Prokopenko, M., Carro, A. et al. Explaining herding and volatility in the cyclical price dynamics of urban housing markets using a large-scale agent-based model. SN Bus Econ 1, 76 (2021). https://doi.org/10.1007/s43546-021-00077-2
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DOI: https://doi.org/10.1007/s43546-021-00077-2