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Report
Tight credit conditions continue to constrain the housing recovery
The expansion of Federal Housing Administration lending has let households with imperfect credit or the inability to make a large down payment maintain access to mortgage borrowing. Rather than excluding such households, lenders have been applying strict underwriting conditions on all borrowers. Clarifying what constitutes approved lending may help relax credit conditions with minimal increase in risk.
Working Paper
The settlement of the United States, 1800 to 2000: the long transition towards Gibrat's law
A prominent strand of economic literature argues that population growth rates across locations areas are uncorrelated with the population levels of those locations (?Gibrat?s Law?). Such uncorrelated growth, it is argued, can account for the current distribution of population across locations. This paper shows that, on the contrary, locations? population growth throughout U.S. history has always been highly correlated with their initial population levels. Throughout the entire 19th century and the early 20th century, low-population locations tended to grow faster than intermediate-population ...
Working Paper
A simple model of city crowdedness
Population density varies widely across U.S. cities. A calibrated general equilibrium model in which productivity and quality-of-life differ across locations can account for such variation. Individuals derive utility from consumption of a traded good, a nontraded good, leisure, and quality-of-life. The traded and nontraded goods are produced by combining mobile labor, mobile capital, and non-mobile land. An eight-fold increase in population density requires an approximate 50 percent productivity differential or an approximate 20 percent compensating differential. A thirty-two-fold increase in ...
Journal Article
What to Do about Fannie and Freddie: A Primer on Housing Finance Reform
Policymakers face several issues in reforming the current system of mortgage finance toward one in which the government plays a less direct role.
Working Paper
The Size of U.S. Metropolitan Areas
Metropolitan areas—unions of nearby built-up locations within which people travel on a day-to-day basis among places of residence, employment, and consumption—serve as a fundamental unit of economic analysis. But existing delineations of U.S. metro areas—including metropolitan Core-Based Statistical Areas (CBSAs), Urbanized Areas, and Commuting Zones—stray far from this conception. We develop a flexible algorithm that uses commuting flows among U.S. census tracts in 2000 to match varied interpretations of our metropolitan conception. Under a baseline parameterization that balances ...
Working Paper
How Centralized is U.S. Metropolitan Employment?
Centralized employment remains a benchmark stylization of metropolitan land use.To address its empirical relevance, we delineate "central employment zones" (CEZs)- central business districts together with nearby concentrated employment|for 183 metropolitan areas in 2000. To do so, we first subjectively classify which census tracts in a training sample of metros belong to their metro's CEZ and then use a learning algorithm to construct a function that predicts our judgment. {{p}} Applying this prediction function to the full cross section of metros estimates the probability we would judge ...
Working Paper
Monocentric city redux
This paper argues that centralized employment remains an empirically relevant stylization of midsize U.S. metros. It extends the monocentric model to explicitly include leisure as a source of utility but constrains workers to supply fixed labor hours. Doing so sharpens the marginal disutility from longer commutes. The numerical implementation calibrates traffic congestion to tightly match observed commute times in Portland, Oregon. The implied geographic distribution of CBD workers' residence tightly matches that of Portland. The implied population density, land price, and house price ...
Journal Article
Millennials, baby boomers, and rebounding multifamily home construction
Jordan Rappaport analyzes the forces driving the recent rebound in multifamily construction.
Working Paper
How does labor mobility affect income convergence?
The neoclassical growth model is extended to allow for mobile labor. Following a negative shock to a small economy's capital stock, capital and labor frictions effect an equilibrium transition path during which wages remain below their steady-state level. Outmigration directly contributes to faster income convergence but also creates a disincentive for gross capital formation. The net result is that across a wide range of calibrations, the speed of income convergence is relatively insensitive to the degree of labor mobility.