This thesis explores the Bohmann Park neighborhood of Washington County as a case study of contemporary style in Oregon. As both individual and the largest grouping of homes by Robert Rummer, Bohmann Park informs treatment of Rummer homes and contemporary resources. Nationally, contemporary homes by architects and builders have been recognized for their architectural and historic value through the historiography, National Register listing, and local protections. Modern architecture in Oregon has yet to be equally rigorously explored. Rummer’s prolific work is an ideal point of exploration. Within the context of architectural history and preservation practice, two condition assessments of individual residences in the neighborhood analyze the varied care and common threats faced by these resources. The adverse effects faced by Bohmann Park from the City of Portland’s Fanno Creek Pump Station and its mitigation efforts explore challenges faced by the subdivision as a potential historic district.