This Urban Heat Tool Kit is designed to help local governments reduce the effects of increased heat on their communities and citizens. It provides an analytic tool for policy makers to consider a combination of four built-environment changes (cool roofs, green roofs, cool pavements, and urban forestry), providing clear criteria for selecting among these approaches. It also examines the roles government can play in pursuing these changes: shaping government’s own operations, mandating or providing incentives for private choices, and engaging in public education. The menu of options it provides does not prescribe a particular path for all communities. Instead, it offers a complete list of options and the means to select among them to fit particular circumstances.