This book, written collectively, offers a sample of current reflections on policies to facilitate access to housing for low-income families in Mexico, a topic of great relevance to researchers that has generated a multitude of works, many of them focused on the regulation of irregular settlements and their consolidation. More than half a century after these policies, the great relevance of the topic is evident, which allows us to highlight the panorama of existing lines of research on the subject, many of them renewed.