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Title:Housing and debt over the life cycle and over the business cycle PDF Logo
Authors:Iacoviello, Matteo
Pavan, Marina
Issue Date:2009
Series/Report no.:Working paper series // Federal Reserve Bank of Boston 09-12
Abstract:This paper describes an equilibrium life-cycle model of housing where nonconvex adjustment costs lead households to adjust their housing choice infrequently and by large amounts when they do so. In the cross-sectional dimension, the model matches the wealth distribution; the age profiles of consumption, homeownership, and mortgage debt; and data on the frequency of housing adjustment. In the time-series dimension, the model accounts for the procyclicality and volatility of housing investment, and for the procyclical behavior of household debt. The authors use a calibrated version of their model to ask the following question: what are the consequences for aggregate volatility of an increase in household income and a decrease in downpayment requirements? They distinguish between an early period, the 1950s though the 1970s, when household income risk was relatively small and loan-to-value ratios were low, and a late period, the 1980s through today, with high household income risk and high loan-to-value ratios. In the early period, precautionary saving is small, wealth-poor people are close to their maximum borrowing limit, and housing investment, homeownership, and household debt closely track aggregate productivity. In the late period, precautionary saving is larger, wealth-poor people borrow less than the maximum and become more cautious in response to aggregate shocks. As a consequence, the correlation between debt and economic activity on the one hand, and the sensitivity of housing investment to aggregate shocks on the other, are lower, as found in the data. Quantitatively, this model can explain: (1) 45 percent of the reduction in the volatility of household investment; (2) the decline in the correlation between household debt and economic activity; and (3) about 10 percent of the reduction in the volatility of GDP.
JEL:E22
E32
E44
E51
D92
R21
Document Type:Working Paper
Appears in Collections:Working Paper Series, Federal Reserve Bank of Boston

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