The U.S. housing shortage has rapidly increased rents in lower-income neighborhoods—making secure housing hard to find. But how does building high-end apartments address availability across income brackets? This episode of "After the Fact" explores new housing's ripple effects and its impact on affordability. The podcast team traces a chain of vacancies, starting with a new luxury apartment unit in Washington, D.C. Its opening spurred the availability of middle-income units and ultimately led to an available unit for a single mother who was able to move out of a shelter and build a new life with her son.