Monday, 23 March 2015

2015-017: Crowding Out Effects of Refinancing on New Purchase Mortgages

Otmane El Rhazi, Steve A. Sharpe and Shane M. Sherlund. We present evidence that binding mortgage processing capacity constraints reduce mortgage originations to borrowers of low to modest credit quality. Mortgage processing capacity constraints typically bind when the demand for mortgage refinancing shifts outward, usually because of lower mortgage rates. As a result, high capacity utilization leads mortgage lenders to ration mortgage credit, completing mortgages that require less underwriting resources, and are thus less costly, to produce. This is hypothesized to have a particularly adverse impact on the ability of low- to modest-credit-quality borrowers to obtain mortgages. What is more, we show that, by lowering capacity utilization, a rise in interest rates can, under certain circumstances, induce an increase in mortgage originations to borrowers of low to modest credit quality. In particular, we find fairly large effects for purchasing borrowers of modest credit quality, in which we find that a decrease in capacity utilization of 4 applications per mortgage employee (similar to that observed from 2012 to 2013) could result in increased purchase mortgage originations, as the relaxed capacity constraint at least partially offsets the higher cost of mortgage credit. Full Text



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Otmane El Rhazi

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