Abstract: The vision of the Smart Home has long promised to transform living environments into assistive, adaptive, and intelligent spaces that promote independence, safety, and wellbeing—particularly for older adults and those aging with disabilities. This article reports on a recent keynote by the author in the CNCC2025 convention held in Harbin, China. It reflects on two decades of pioneering research, from the Gator Tech Smart House to current initiatives in “Smart-Ready Homes and Communities”, and distills the lessons learned in designing assistive environments for graceful aging. The article revisits the conceptual foundations of the Smart Home, clarifying its role in supporting user intentions, daily activities, health monitoring, and long-term care. Case studies from the Gator Tech Smart House highlight both technical innovations—such as smart floors, virtual sensors, and health IoT platforms—and key challenges, including coping with uncertainty, avoiding over-engineering, and ensuring scalability. Central to these lessons is the “Box Principle”: innovate boldly, but always within the boundaries of what can be realistically packaged, deployed, and maintained. The article presents the lessons learned from the Gator Tech Smart House and introduces the shift toward the emerging paradigm of Smart-Ready Homes and Communities. By embedding “digital plumbing” into housing design, homes can be easily upgraded with smart technologies, transforming them into personalized smart environments at the point of sale or throughout the resident’s lifespan.