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Structural Change in a Multisector Model of Growth

American Economic Review 2007 97(1), 429-443
We study a multisector model of growth with differences in TFP growth rates across sectors and derive sufficient conditions for the coexistence of structural change, characterized by sectoral labor reallocation and balanced aggregate growth. The conditions are weak restrictions on the utility and production functions. Along the balanced growth path, labor employed in the production of consumption goods gradually moves to the sector with the lowest TFP growth rate, until in the limit it is the only sector with nontrivial employment of this kind. The employment shares of intermediate and capital goods remain constant during the reallocation process. (JEL O41)

Housing and Inequality

Journal of Economic Literature 2025 63(3), 916-963 open access
We approach the literature on housing and inequality from two angles. One is the impact of unequal endowments on housing. The second is the “memberships” inequality associated with neighborhoods, namely, households’ location in a geographic and social context. We elaborate on these two angles of inequality and focus on three distinctive features of housing: consumption, capital, and location. For owner-occupants, capital and consumption are bundled together in a single good. For both renters and owner-occupants, housing consumption inequality, access to good neighborhoods, and housing wealth follow from unequal endowments. Housing can propagate inequality by enabling owner-occupants to use it as collateral for other investments or to secure higher returns to human capital investments through the better schools in better neighborhoods. We use this approach to analyze key aspects of housing and inequality, paying special attention to the impacts of racial discrimination and segregation. (JEL D63, J15, J24, R21, R23, R31)

Hot and Cold Seasons in the Housing Market

American Economic Review 2014 104(12), 3991-4026 open access
Every year housing markets in the United Kingdom and the United States experience systematic above-trend increases in prices and transactions during the spring and summer (“hot season”) and below-trend falls during the autumn and winter (“cold season”). House price seasonality poses a challenge to existing housing models. We propose a search-and-matching model with thick-market effects. In thick markets, the quality of matches increases, rising buyers' willingness to pay and sellers' desire to transact. A small, deterministic driver of seasonality can be amplified and revealed as deterministic seasonality in transactions and prices, quantitatively mimicking seasonal fluctuations in UK and US markets. (JEL C78, R21, R31)

Structural Change in a Multisector Model of Growth

American Economic Review 2007 97(1), 429-443 open access
We study a multi-sector model of growth with differences in TFP growth rates across sectors and derive sufficient conditions for the coexistence of structural change, characterized by sectoral labor reallocation, and balanced aggregate growth. The conditions are weak restrictions on the utility and production functions commonly applied by macroeconomists. Per capita output grows at the rate of labor-augmenting technological progress in the capital-producing sector and employment moves to low-growth sectors. In the limit all employment converges to two sectors, the slowest-growing consumption-goods sector and the capital-goods sector.

To Own or to Rent? The Effects of Transaction Taxes on Housing Markets

Review of Economic Studies 2026 93(4), 2605-2645 open access
Using sales and leasing data, this paper finds three novel effects of a higher property transaction tax: higher buy-to-rent transactions alongside lower buy-to-own transactions despite both being taxed, a lower sales-to-leases ratio, and a lower price-to-rent ratio. This paper explains these facts by developing a search model with entry of investors and households, households choosing to own or rent in the presence of credit frictions, and homeowners deciding when to move house. A higher transaction tax reduces homeowners’ mobility and increases demand for rental properties, which explains the empirical facts and leads to a lower homeownership rate. The deadweight loss is large at 111% of tax revenue, with more than half of this due to distorting decisions to own or rent.