Dan has produced historic preservation documents on scores of projects; conducting the architectural conditions-assessments himself, while leading and directing teams of consultants in the structural, mechanical, plumbing, electrical, cost estimation and archival collections fields. Dan has administered construction contracts on multiple restoration projects at significant National Register and National Historic Landmark buildings, in Philadelphia, southeast PA, NJ and DE, many with award-winning and published results. In private practice in Chester County, PA, Dan currently specializes in the preservation, restoration and rehabilitation of historic buildings, design of sensitive additions to historic buildings for accessibility and code compliance, and the design of new residences in traditional styles.