Housing affordability: a framing, synthesis of research and policy, and future directions
George Galster and
Kwan Ok Lee
International Journal of Urban Sciences, 2021, vol. 25, issue S1, 7-58
We synthesize the vast, international scholarly literature related to the growing problem of housing affordability. As a foundation for assessing both the causes of housing affordability problems and possible policies for alleviating them, we take a systematic, holistic perspective and specify nine structural relationships for a metropolitan area that comprehensively delineate the determinants of housing affordability. We discuss concepts and measures of housing affordability, evidence on the primary causes and effects of unaffordable housing, alternative policy approaches, potential future trends in affordability, and suggestions for further research. While focusing on the most recent, high-quality empirical evidence, we also rely on previously published reviews and seminal papers in order to provide historical perspective on how the literature has evolved. Our reconnaissance of the international literature since 2008 demonstrates that although evaluation research in the context of western, developed countries’ housing policies has dominated, increasingly such research has emerged from other countries.Highlights We discuss how to frame housing affordability issues, synthesize evidence from the relevant literature, and propose directions for future research.We take a holistic perspective to understand causes of housing affordability problems and assess policy responses.Our review of the international scholarly literature encompasses the evidence from non-western, developing countries.Despite the extensive literature, there remain unexplored questions and emerging topics.
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