Study Design. This mixed methods, cross-sectional study used structured interviews to obtain information about presence of, and variation in, GH-relevant structures and processes of care. Qualitative questions explored reasons for variation in model implementation. Data Collection/Extraction Methods. Interview data were analyzed using relatedsample tests, and qualitative data were iteratively analyzed using a directed content approach. Principal Findings. GH homes showed substantial variation in practices to support resident choice and decision making; neither GH nor legacy homes provided complete choice, and all GH homes excluded residents from some key decisions. GH homes were most consistent with the model and one another in elements to create a real home, such as private rooms and baths and open kitchens, and in staff-related elements, such as self-managed work teams and consistent, universal workers. Conclusions. Although variation in model implementation complicates evaluation, if expansion is to continue, it is essential to examine GH elements and their outcomes.