Home plays a critical role in children’s health, and housing policy must take this into account. Dr. Megan Sandel, a researcher and practicing pediatrician with the GROW clinic, Children’s Health Watch and Boston University, delivered this message in a public talk that took place on November 22, 2016, at the Dave Braley Health Sciences Centre in downtown Hamilton. Dr. Sandel’s visit to McMaster was hosted by MIHE in honour of National Housing day, and as a kick-off event for the RentSafe Roundtable event that took place on November 23. Dr. Sandel argued that a safe, affordable, stable home can, like a vaccine, provide multiple, long-lasting benefits to keep children healthy. On the other hand, poor quality, unsafe and unstable housing can have lifelong negative consequences for health, especially when poor and unstable housing is experienced very early in life.