Some of the main contributors to poor health in communities reside outside the health care delivery sector. For example, characteristics of the places we live, work, learn, and play influence our health. Therefore, decision-making in such areas as transportation, housing, and education at different levels of government, and in the private sector, warrants examination, research, dialogue, and action. This roundtable workshop focused on the cross-sectoral dialogue and action needed to support and inform thoughtful, evidence-based decisions that benefit health while achieving other important objectives (economic development, efficient public transit, and others).