The Quincy/Weymouth Continuum of Care (CoC), located just outside of Boston, Massachusetts, has adopted the use of local evidenced-based practices to drive program and policy design. The CoC has made a commitment to the collection and analysis of longitudinal data, captured primarily in the local Homeless Management Information System (HMIS), to gauge the effectiveness of homeless programs and inform progress on their local 10-Year Plan to End Chronic Homeless. The use of local HMIS data has directly impacted both changes in policy in the CoC and the development of housing to meet specific homeless client needs