This paper uses an assignment model to understand the cross section of house prices within a metro area. Movers' demand for housing is derived from a lifecycle problem with credit market frictions. Equilibrium house prices adjust to assign houses that differ by quality to movers who differ by age, income and wealth. To quantify the model, we measure distributions of house prices, house qualities and mover characteristics from micro data on San Diego County during the 2000s boom. The main result is that cheaper credit for poor households was a major driver of prices, especially at the low end of the market.

We solve a general equilibrium model with three types of agents and a government. Borrower-entrepreneurs produce output financed with long-term debt issued by financial intermediaries, subject to a leverage constraint. Intermediaries fund these loans combining deposits and their own equity, and are subject to a regulatory capital constraint. Savers provide funding to banks and to the government. Both entrepreneurs and banks make optimal default decisions. The government issues debt to finance budget deficits and to pay for bank rescue operations. We solve for macroeconomic quantities, the price of capital, the yield on safe bonds, and the credit spread. We study how financial and non-financial recessions differ, show that high credit spread forecasts future declines in economic activity, and study macro-prudential policies. Policies that limit corporate leverage and financial leverage reduce welfare. Their benefits for financial and macroeconomic stability are outweighed by the costs from a smaller-sized economy. The two types of macroprudential policies have different implications for the wealth distribution. JEL: G12, G15, F31.

How does the shadow banking system respond to changes in the capital regulation of commercial banks? This paper builds a quantitative general equilibrium model with commercial banks and shadow banks to study the unintended consequences of capital requirements. A key feature of our model are defaultable bank liabilities that provide liquidity services to households. The quality of the liquidity services provided by bank liabilities depends on their safety in case of default. Commercial bank debt is fully insured and thus provides full liquidity. However, commercial banks do not internalize the social costs of higher leverage in the form of greater bankruptcy losses (moral hazard), and are subject to a regulatory capital requirement. In contrast, shadow bank liabilities are subject to runs and credit risk and thus typically less liquid compared to commercial banks. Shadow banks endogenously limit their leverage as they internalize its costs. Tightening the commercial banks' capital requirement from the status quo leads to safer commercial banks and more shadow banking activity in the economy. While the safety of the financial system increases, it provides less liquidity. Calibrating the model to data from the Financial Accounts of the U.S., the optimal capital requirement is around 15%.