This document discusses changes in rental vacancy rates in gentrified areas of Washington D.C. from 2000 to 2010. It finds that the rental vacancy rate in D.C. decreased over this period, while rates in surrounding Northeastern areas increased. Specifically, most gentrified neighborhoods in D.C. saw reductions in their rental vacancy rates, indicating that gentrification may lower vacancies. However, some gentrifying neighborhoods like Edgewood had increasing vacancy rates since they were less developed than other gentrified areas.