Borrower Self-Selection, Underwriting Costs, and Subprime Mortgage Credit Supply
In the U.S., households participate in two very different types of credit markets. Personal lending is characterized by continuous risk-based pricing in which lenders offer households a continuous distribution of borrowing possibilities based on estimates of their creditworthiness. This contrasts sharply with mortgage markets where lenders specialize in specific risk categories of borrowers and mortgage supply is stepwise linear. The contrast between continuous lending for personal loans and discrete lending by specialized lenders for mortgage credit has led to concerns regarding the efficiency and equity of mortgage lending. This paper sheds both theoretical and empirical light on the differences in the two credit markets. The theory section demonstrates why, in a perfectly competitive credit market where all lenders have the same underwriting technology, mortgage credit supply curves are stepwise linear and lenders specialize in prime or subprime lending. The empirical section then provides evidence that borrowers are being effectively sorted based on risk characteristics by the market. Copyright Springer Science + Business Media, Inc. 2004
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- Anthony Pennington-Cross & Joseph Nichols, 2000.
"Credit History and the FHA-Conventional Choice,"
Real Estate Economics,
American Real Estate and Urban Economics Association, vol. 28(2), pages 307-336.
- Hendershott, Patric H. & LaFayette, William C. & Haurin, Donald R., 1997. "Debt Usage and Mortgage Choice: The FHA-Conventional Decision," Journal of Urban Economics, Elsevier, vol. 41(2), pages 202-217, March.
- Donald R. Haurin & Susan M. Wachter & Patric H. Hendershott, 1995. "Wealth Accumulation and Housing Choices of Young Households: An Exploratory Investigation," NBER Working Papers 5070, National Bureau of Economic Research, Inc.
- Peter Linneman & Susan Wachter, 1989. "The Impacts of Borrowing Constraints on Homeownership," Real Estate Economics, American Real Estate and Urban Economics Association, vol. 17(4), pages 389-402.
- Pennington-Cross, Anthony, 2003. "Credit History and the Performance of Prime and Nonprime Mortgages," The Journal of Real Estate Finance and Economics, Springer, vol. 27(3), pages 279-301, November.
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