Publications
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Immigration and Urban Schools: The Dynamics of Demographic Change in the Nation’s Largest School District
The authors use a rich data set on New York City public elementary schools to explore how changes in immigrant representation have played out at the school level, providing a set of stylistic facts about the magnitude and nature of demographic changes in urban schools. They find that while the city experienced an overall increase in its immigrant representation over the 5 years studied, its elementary schools did not. Although the average school experienced little change during this period, a significant minority of schools saw sizable shifts. The change does not mirror the White flight and ‘tipping’ associated with desegregation but rather suggests a tendency to stabilize, with declines in immigrant enrollments concentrated in schools with larger immigrant populations at the outset. The authors also find that changes in the immigrant shares influence the composition of the school’s students, and that overall school demographic changes do not mirror grade-level changes within schools.
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Impact Fees and Housing Affordability
The increasing use of impact fees and the costs that they may add to the development process raises serious concerns about the effect using impact fees to fund infrastructure will have on the affordability of housing.
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Is Segregation Bad for Your Health? The Case of Low Birth Weight
This paper explores the relationship between racial segregation and racial disparities in the prevalence of low birth weight. The paper has two parallel motivations. First, the disparities between black and white mothers in birth outcomes are large and persistent. Second, while there is a growing literature on the costs of racial segregation it has largely focused on economic outcomes such as education and employment.
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Localized Commercial Effects from Natural Disasters: The Case of Hurricane Sandy and New York City
This paper considers the localized economic impacts of an extreme event, Hurricane Sandy, on a dense and diverse economy, New York City. It isolates establishments that are more dependent on local customers--retail establishments--to test whether or not they are more vulnerable to hurricane-induced flooding than other entities with geographically dispersed consumer bases. The paper exploits variation in micro-scale exposure to pre-storm risk and post-storm inundation to identify the impact of storm-induced flooding on establishment survival, employment and sales revenues. Results indicate that the neighborhood economic losses from Sandy were significant, persistent, and concentrated among retail businesses that tend to serve a more localized consumer base.
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Migration Choices of the Boomerang Generation: Does Returning Home Dampen Labor Market Adjustment?
This paper shows that boomerang moves (returning to live with one's parents) are more likely to bring young adults to labor markets with higher unemployment and lower wages and the likelihood of a non-boomerang location being chosen by a young adult increases with local wages.
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Minimum parking requirements and housing affordability in New York City
Many cities throughout the United States require developers of new residential construction to provide a minimum number of accompanying off-street parking spaces. However, critics argue that these requirements increase housing costs by bundling an oversupply of parking with new housing and by reducing the number of units developers could otherwise fit on a given lot. In this article, we explore the theoretical objections to minimum parking requirements and the limited empirical literature. We then use lot-level data and GIS to analyze parking requirements in New York City to determine to what extent they are already effectively sensitive to transit proximity. Finally, we examine developer response to parking requirements by comparing the number of spaces that are actually built to the number required by applicable zoning law. Our results indicate that the per-unit parking requirement in New York is, on average, lower in areas near rail transit stations, but the required number of spaces per square foot of lot area is higher, on average, in transit accessible areas. We also find that by and large, developers tend to build only the bare minimum of parking required by zoning, suggesting that the minimum parking requirements are binding for developers, as argued by critics, and that developers do not simply build parking out of perceived marked need. Our results raise the possibility that even in cities with complex and tailored parking requirements, there is room to tie the requirements more closely to contextual factors. Further, such changes are likely to result in fewer parking spaces from residential developers.
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Miracle on Sixth Avenue: Information Externalities and Search
After a long dormant period, Lower Sixth Avenue in New York has under gone a rapid revitalisation. We show that a simple search theoretic model with information spillovers can explain both the period of underuse and the rapid turnaround. The model reduces to a simple equation, which allows us to do comparative statics on the duration of vacancies. We show how the solution reacts to changes in market structure and changes in search technology. The model is suggestive of difficulties that may occur in many markets in which there are changes over time in the optimal use of resources.
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Mortgage Foreclosures and the Shifting Context of Crime in Micro-Neighborhoods
In the wake of the housing crisis there is growing concern that increased mortgage foreclosures may lead to physical deterioration of buildings and increased vacancy rates in neighborhoods, undermining neighborhood social controls, and causing increases in local crime. While some recent research suggests that increased mortgage foreclosures in micro-neighborhoods cause modest increases in crime (Ellen, Lacoe, and Sharygin, 2013; Cui, 2010), this paper considers whether foreclosures lead to increased crime on a block, as well as the mechanisms through which foreclosures affect neighborhood crime. To shed light on mechanisms, we investigate whether and how foreclosures shift the location and type of criminal activity by changing the relative attractiveness to potential offenders of one location versus another. For instance, the presence of a vacant, foreclosed building may make it more likely that a drug dealer will sell drugs in a building rather than on the street. As a result, crime occurring inside residences (and in vacant buildings in particular) and on the street may increase by different magnitudes. In addition, we consider whether foreclosures affect resident reports of disorder. Using richly detailed foreclosure, 311, and crime data geo-coded to the blockface (a street segment in-between the two closest cross-streets), we estimate the impact of foreclosures on the location of crime within blockfaces. This research focuses on Chicago, Illinois. Like many areas of the country, housing prices in Chicago reached a peak in 2006, and declined through 2011. In September 2011, 8.7 percent of the mortgages in the Chicago metropolitan area were in foreclosure, giving Chicago the 11th highest foreclosure rate among the 100 largest metropolitan areas in the country. Recent media reports claim that foreclosed and abandoned buildings in Chicago attract criminal activity including gang activity, drug use, and burglaries, in addition to graffiti, and theft of copper pipes and radiators (Knight and O’Shea, 2011). This study takes an empirical look at how foreclosures have changed patterns of crime in Chicago.
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Nativity Differences in Neighborhood Quality Among New York City Households, 1996
In this paper we add to the literature on locational attainment of immigrants by focusing on a broader range of neighborhood quality indicators that has been done before and by examining the foreign-born contingent of a given ethnic group separately from the native-born contingent of that group. Specifically, we evaluate in New York City how immigrant households compare to native-born households, overall and by race and ethnicity, with respect to neighborhood characteristics such as crime, health outcomes, poverty, and unsafe housing.
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Neighborhood Effects of Concentrated Mortgage Foreclosures
As the national mortgage crisis has worsened, an increasing number of communities are facing declining housing prices and high rates of foreclosure. Central to the call for government intervention in this crisis is the claim that foreclosures not only hurt those who are losing their homes to foreclosure, but also harm neighbors by reducing the value of nearby properties and in turn, reducing local governments’ tax bases. The extent to which foreclosures do in fact drive down neighboring property values has become a crucial question for policy-makers. In this paper, we use a unique dataset on property sales and foreclosure filings in New York City from 2000 to 2005 to identify the effects of foreclosure starts on housing prices in the surrounding neighborhood. Regression results suggest that above some threshold, proximity to properties in foreclosure is associated with lower sales prices. The magnitude of the price discount increases with the number of properties in foreclosure, but not in a linear relationship.
