Now that person-centered care (PCC) is becoming the new standard in long-term services and supports (LTSS), providers are shifting away from the medical model toward a focus on improving consumers’ quality of life. A team of researchers and clinicians developed the Preferences for Everyday Living Inventory (PELI), an assessment tool that captures the psychosocial preferences of older adults and facilitates the adoption of PCC practices. This article details the PELI’s development, pilot testing, and benefits for care planning, delivery and quality improvement. PELI is the first tool of its kind to pass rigorous scientific testing.