Abstract
In order to address some of the most pressing problems of the twenty-first century, such as climate change and income inequality, land-use law must facilitate residential infill development – the construction of new housing and supportive infrastructure in areas with significant existing development. Planning and zoning have often been used to thwart infill development and foster urban sprawl, and this chapter explores their role in promoting infill development. It first describes the relationship between land-use planning and zoning in the US, and then discusses different scales of planning (i.e., local and regional). It then illustrates potential avenues for research on shifts in land-use law to promote infill development, with examples from the substantive domains of transportation planning and housing planning.