The UCLA Center for Health Policy Research (CHPR) hosted the 2021 E.R. Brown Symposium, "Opening Doors for All: Improving Health in Housing and Homelessness", on October 4–5. Day one of a two-day symposium that brought public health thought leaders together to discuss housing and homelessness. Speakers shared past successes and lessons learned, discussed economic and social factors contributing to homelessness, and identified opportunities to creating a healthier, more prosperous California for all.