In an influential paper, Mian, Rao and Sufi (2013) exploit geographic variation in housing supply elasticities to measure the effect of changes in the housing share of net worth on total household expenditures during the Great Recession. Their widely-cited estimates are based on proprietary...

This paper is structured in three parts. The first part outlines the methodological steps, involving both theoretical and empirical work, for assessing whether an observed allocation of resources across countries is efficient. The second part applies the methodology to the long-run allocation of...