Catalyze Research and Consulting, LLC, along with the Phoenix Revitalization Corporation and with support from the Local Initiatives Support Corporation (LISC) Phoenix, conducted a health impact assessment (HIA) of the proposed plan for redevelopment of the Coffelt-Lamoreaux Public Housing Project (Coffelt) in Phoenix, Arizona. Coffelt is the oldest operational public housing project in Maricopa County. It was developed in 1953 and annexed in 1959 by the City of Phoenix, but the streets in Coffelt were not annexed into the city street plan. The HIA examined how residents’ physical and mental health could be affected by improvements in site infrastructure, such as landscaping and street improvements, as well as improvements in housing conditions.