Open Space in an Urban Area : Might There Be Too Much of a Good Thing?

Numerous policies encourage the preservation of open space in urban areas. Two of many examples are large-lot zoning and tax benefits to donors of conservation easements. These policies rest on the plausible inference that an open space can benefit nearby residents, for instance, by enhancing scenic vistas and recreational opportunities. But commentators tend to underestimate the costs of open space. The key advantage of urban living is proximity to other people. Open spaces reduce urban densities, increase commuting times, and foster sprawl. I advance the heretical view that a metropolitan area can suffer from having too much open space, and briefly suggest some reforms, particularly in zoning and conservation-easement policy