Managing a Housing Boom

Jason Allen and Daniel Greenwald

No 1310, 2018 Meeting Papers from Society for Economic Dynamics

Abstract: We investigate how macroprudential policies intended to dampen rises in debt and house prices are influenced by segmentation in the housing and mortgage market. We develop a modeling framework with two mortgage submarkets: a government-insured sector with loose LTV limits and tight PTI limits, and an uninsured sector displaying the reverse pattern. This form of heterogeneity is modeled after the Canadian mortgage system, but is common in countries around the world. We find that this segmentation has important consequences for the effectiveness of macroprudential policy. While tightening payment-to-income (PTI) limits is highly effective at dampening a housing boom in a one-sector system, tightening these limits in the insured sector only is much weaker, due to substitutions into the uninsured sector. In contrast, the effect of tightening loan-to-value (LTV) limits in the uninsured sector is strengthened by market segmentation, causing price-rent ratios to fall, while the same tightening in the insured sector would counterproductively cause price-rent ratios to rise.

Date: 2018
New Economics Papers: this item is included in nep-ure
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