PURPOSE: To describe what an assisted living facility (ALF) is who resides in ALFs, and the benefits of nurse practitioner (NP) practice in an ALF for the client, facility, NP, and practice. DATA SOURCES: Selected scientific literature, legal and regulatory guidelines, consumer information and guidelines, Internet sites, and the authors' experiences. CONCLUSIONS: Assisted living facilities are nonmedical residential settings grounded in a philosophy of providing residents with choice, autonomy, privacy, independence, dignity, and respect in a housing environment as homelike as possible. Nationally, ALFs vary considerably by size, services provided, and regulations imposed by states. IMPLICATIONS FOR PRACTICE: Assisted living facilities are now a popular choice for individuals who desire assistance with selected activities of daily living (ADL) while maintaining maximum independence. They are becoming an excellent site for the provision of in-home primary care in order to facilitate aging in place.