This document summarizes the findings of a study on developing senior-friendly housing in McKinleyville, California. It discusses: the growing senior population in Humboldt County; a survey that found seniors prefer aging in place, energy efficient homes, and walkable communities; barriers developers face in building senior housing like funding and mixing incomes; and design considerations like universal design, green space, and renewable energy that could meet seniors' needs and integrate multi-generational communities. The document presents two conceptual designs for a senior housing development in McKinleyville with features like single-family homes, apartments, gardens, and trails.