Hiti, DiFrancesco and Siebold, Inc. (HD+S) provides innovative, award-winning architectural services from its offices in Cleveland, Ohio. The firm’s practice includes the design of senior living environments, commercial/corporate office buildings and multi-family housing, along with considerable experience in retail, institutional, historic preservation and interior design projects. For over eighty years, our success has been measured by the large number of clients consistently returning for additional architectural services.