Tag Archives: working paper

Comparison Shopping Savings in Mortgage Market

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Alexei Alexandrov and Sergei Koulayev of the Consumer Financial Protection Bureau have posted a working paper, No Shopping in the U.S. Mortgage Market: Direct and Strategic Effects of Providing Information to SSRN. The paper is the first to answer the question, “How much do consumers lose by not shopping enough for mortgages?” (5) They find that “for the average consumer, the the difference between the actual and the lowest offered rate amounted to an extra $300 per year.” (Id.)

The abstract reads,

We document and analyze price dispersion in the U.S. mortgage market. We find significant price dispersion in posted prices in the retail channel: for example, a consumer with a prime credit score and with a 20% down payment might see a spread in interest rates of 50 basis points, controlling for all relevant consumer/property characteristics, including discount points. We also show, from survey evidence, that close to half of consumers did not shop before taking out a mortgage, and worse, many consumers do not seem to realize that there is price dispersion. Using a proprietary dataset of lenders’ ratesheets, we estimate an equilibrium model of costly search where a share of consumers holds incorrect beliefs regarding price dispersion. Whereas high search costs is one reason behind the lack of search, we show that non-price preferences also play an important role in preventing consumers from searching more; and so an effective policy would target both. In one of our counterfactuals, we show that eliminating non-price preferences results in savings of about $9 billion dollars a year.

In addition to its significant finding on a new topic (one that should have policy implications for the Consumer Financial Protection Bureau), the paper also demonstrates the value of government research on the mortgage markets.

The paper relies on data from the National Survey of Mortgage Originations. The NSMO is a survey designed by the CFPB and the Federal Housing Finance Agency.  It is sent out on a quarterly basis to a nationally representative sample of recent mortgage borrowers. Jeb Hensarling (R-TX), the Chair of the House Financial Services Committee, has introduced legislation to stop the CFPB from conducting research on the mortgage markets. That would be a bad result for consumers.

Gentrification & Socioeconomic Diversity

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Lisa Brewster

Lei Ding et al. have posted a Federal Reserve Bank of Philadelphia Working Paper, Gentrification and Residential Mobility in Philadelphia, to SSRN. The abstract reads,

Gentrification has provoked considerable debate and controversy about its effects on neighborhoods and the people residing in them. This paper draws on a unique large-scale consumer credit database to examine the mobility patterns of residents in gentrifying neighborhoods in the city of Philadelphia from 2002 to 2014. We find significant heterogeneity in the effects of gentrification across neighborhoods and subpopulations. Residents in gentrifying neighborhoods have slightly higher mobility rates than those in nongentrifying neighborhoods, but they do not have a higher risk of moving to a lower-income neighborhood. Moreover, gentrification is associated with some positive changes in residents’ financial health as measured by individuals’ credit scores. However, when more vulnerable residents (low-score, longer-term residents, or residents without mortgages) move from gentrifying neighborhoods, they are more likely to move to lower-income neighborhoods and neighborhoods with lower values on quality-of-life indicators. The results reveal the nuances of mobility in gentrifying neighborhoods and demonstrate how the positive and negative consequences of gentrification are unevenly distributed.
I am not in a position to fully evaluate the methodology of this paper in this post. At first glance, however, it appears to be a well-constructed and large study, tracking “the residential location and financial health of a random sample of more than 50,000 adults.” (1) At the same time, useful household characteristics like income and race were not available to the authors, so the study has some significant limitations.

Given the intensive debates that gentrification engenders in NYC and elsewhere, it is still helpful that the authors offer up some facts and grounded interpretation of those facts. The authors specifically find that “gentrification is associated with positive changes in residents’ financial health: Residents in gentrifying neighborhoods experience an average increase of 11 points in their credit scores, compared with those who are not residents.” (1) At the same time, their results “suggest that less advantaged residents generally gained less from gentrification than others, and those who were unable to remain in a gentrifying neighborhood had negative residential and financial outcomes in the gentrification process.” (2)

Those who decry gentrification as well as those who promote it (quietly, more often than not) will find support for their positions in this paper. But those who are trying to understand just what we are talking about when we talk about gentrification and its effects will be left with a more textured understanding of how the demographics of gentrifying neighborhoods change. If cities are serious about promoting socioeconomic diversity, they must understand what is happening when neighborhoods are in flux.

Friday’s Government Reports Roundup

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