This report examines the issue of economic-based homelessness. As such, it focuses only on households for whom the primary risk factor associated with housing instability is lack of income or high housing cost (a housing affordability problem), rather than issues such as mental health, substance abuse, or family disintegration. That is not to say that individuals with these other disadvantages do not also suffer from extreme poverty. Indeed, while difficult to establish cause and effect, it can be argued that poverty is the critical variable that places people at greatest risk. Thus strategies and policies to address housing instability must intersect and be integrated with strategies for financial stability.