As a starting place for conversations about context in home visiting, HARC is developing a contextual factors taxonomy. The purpose of the taxonomy is to help research partners be more intentional in their consideration and selection of contextual variables to include in research studies. Creating the taxonomy will also help us begin to understand where there are gaps in knowledge regarding the context in home visiting and co-create research studies that will begin to address those gaps. The contextual factors taxonomy is in the early stages of development and will be revised iteratively through a process of co-creation with partners, including families and home visitors. Currently, the taxonomy includes 142 contextual factors with definitions.