PT - JOURNAL ARTICLE AU - Fienup, Matthew J. AU - Plantinga, Andrew J. TI - Unintended Effects of Environmental Policies: The Case of Urban Growth Controls and Agricultural Intensification AID - 10.3368/le.97.2.261 DP - 2021 May 01 TA - Land Economics PG - 261--280 VI - 97 IP - 2 4099 - http://le.uwpress.org/content/97/2/261.short 4100 - http://le.uwpress.org/content/97/2/261.full SO - Land Econ2021 May 01; 97 AB - When environmental policies do not control decision-making on all margins, they can have unintended effects on the environment. We examine effects of urban growth boundaries (UGBs) on agricultural intensification. A primary goal of a UGB is to preserve open space outside the boundary; however, by eliminating the future rent stream from development, UGBs encourage landowners to adopt more capital-intensive agricultural uses. We empirically estimate UGB effects on intensification rates in Ventura County, California. Difference-in-differences estimates reveal that UGBs increased intensification rates by 16–21 percentage points. In Ventura County, policies designed to preserve open space accelerated its loss and increased agricultural externalities