Aging is a universal experience. Greying communities are a reality across the province, the country, and the world. But, with an aging population comes the opportunity for intergenerational relationships, learning, and support. Planning for an aging population presumes that an environment which addresses the needs of its senior population is one that is friendlier, and more appealing, to people of all ages. The challenges faced by seniors in our urban and rural communities differ from those of the general population not by category, but by degree. Zero to 100: Planning for an Aging Population is a toolkit that supports local governments, architects, planners, developers, and residents as they discuss, plan, design, and implement age-friendly housing and community development practices that will benefit every generation. To plan our communities in a way that considers the changing needs of multiple generations is the key to a sustainable future.