Moving Chains: How New Housing Creates Affordability

In this episode, YIMBY Law’s Sonja Trauss sits down with Alex Horowitz, Project Director of the Housing Policy Initiative at The Pew Charitable Trusts, to explore new research on how housing supply impacts affordability across American cities. The conversation examines the concept of “moving chains”—the process by which new housing creates opportunities throughout the housing market as residents move between homes. Sonja and Alex discuss why housing shortages disproportionately harm low-income renters, how new market-rate housing can reduce pressure on existing affordable units, and what the data reveals about the relationship between housing production and affordability. They also explore common misconceptions about new development, the political challenges surrounding housing production, and why zoning restrictions and permitting delays continue to worsen affordability nationwide. If you’ve ever wondered whether building more housing actually lowers costs, this episode offers a data-driven look at one of the most important debates in housing policy today. Read the research discussed in this episode: https://www.pew.org/en/research-and-analysis/articles/2025/07/31/new-housing-slows-rent-growth-most-for-older-more-affordable-units Join YIMBY Action's Email List: https://actionnetwork.org/forms/yimby-action-mailing-list Learn more about YIMBY Action: yimbyaction.org/join Follow YIMBY Action on Instagram: https://www.instagram.com/yimbyaction/ Follow YIMBY Action on BlueSky: https://bsky.app/profile/yimbyaction.bsky.social Follow YIMBY Action on Facebook: https://www.facebook.com/yimbyaction/