This thesis examines the important relationship between preservation and sustainability. Due to the growing concern over greenhouse gas emissions and the fact that the construction industry is the largest contributor to this problem, it is the perfect time for preservation to gain the recognition it deserves at the sustainability table. Preservation and sustainability in the United States have a tied history. Both movements have similar goals that are concerned with making sure that decisions today do not have negative impacts on future generations. Because of our throwaway culture and the trendiness of new green products, it is easy to overlook preservation and reuse as a sustainable method. In fact, preservation in itself is inherently sustainable due to both the approach and the inherent qualities of historic buildings. This thesis points out all of these past and current ties as well as the future steps that must be made in order to enhance the relationship between the two movements. This includes making connections with current sustainability programs and organizations, and incorporating sustainability into preservation education for both professionals and the community.