LHB Inc. is an engineering, architecture, and planning firm based in Duluth, Minnesota, with additional offices in Minneapolis, Cambridge, and Superior, Wisconsin. Founded in 1966, the company provides a comprehensive range of services, including architecture, interior design, civil, electrical, mechanical, and structural engineering, as well as land surveying. LHB also specializes in planning, site design, transportation, urban design, and historic preservation. The firm emphasizes sustainable practices, offering research and development, policy development, and consultancy on sustainable guidelines. It also provides energy modeling, building analysis, and commissioning services, including Performance Metrics to ensure buildings operate efficiently and B3 Benchmarking for managing energy consumption. LHB serves a diverse clientele across commercial, education, government, healthcare, housing, industrial, pipeline, and public works sectors, focusing on creating vibrant and functional spaces.