This article explores the intersection of age-friendly housing and urban planning within the broader context of the economics of aging. As populations worldwide continue to age, there is a growing need to adapt housing and urban environments to meet the specific needs of older adults. This chapter examines the economic implications of age-friendly housing initiatives and the role of urban planning in creating sustainable, inclusive environments for the elderly. By analysing current trends, policies, and economic models, the chapter aims to provide a comprehensive understanding of how age-friendly urban planning can contribute to the well-being of older adults while also benefiting society at large. The discussion includes case studies from various global contexts, highlighting best practices and innovative solutions. The chapter concludes by offering policy recommendations and identifying areas for future research.