Collaborative Design Group Inc. is a multidisciplinary architectural, structural, engineering, interior design and planning firm based in Minneapolis, Minn. The firm offers comprehensive design services to commercial, industrial and institutional clients. Collaborative Design Group Inc. also offers a range of services, including historical preservation and archaeology services. The company serves a variety of clients across different industries, such as housing, hospitality, transportation, academic, forensics, among others. Collaborative Design Group Inc. is providing architectural and engineering services for building preservation/stabilization at the Split Rock Lighthouse historic site.