This thesis presents recommendations for controlling quality in structural interventions on historic properties. Recognizing that establishing quality in the early stages of an intervention can set the standard of quality for an entire project, these recommendations are for the first phase of an intervention, the Pre-Construction Phase. To create these recommendations, first a literature review of past and present intervention methods is conducted. After breaking down the Pre-Construction Phase first into a series of steps, and then each step into a series of details, a standard of quality is established for each detail. The available methods for conducting each detail are then analyzed. Using the literature review and the established standards of quality, recommendations are made as to which method is most appropriate for a given project. These recommendations are applied to two case studies, the structural interventions of Boykin's Tavern and Fallingwater. Finally, conclusions on the use of the proposed quality control recommendations are drawn, and suggestions are given for further work in this field. / Master of Science