Keller, Inc. Email Format
ConstructionWisconsin, United States51-200 Employees
Keller, Inc. is a Wisconsin-based construction firm that operates as a design/build general contractor, founded and incorporated in 1960. The company is headquartered in Kaukauna, Wisconsin, with offices in Madison, Milwaukee, and Wausau, and it employs approximately 260 people. Since 1986, Keller, Inc. has operated under an Employee Stock Ownership Plan and is 100% owned by the ESOP. It has served a wide range of markets, including agricultural, automotive, assisted and senior living, child care, education, healthcare, hospitality, manufacturing, and retail. Recent developments include the 2026 acquisition of Hoffman Planning, Design & Construction, Inc., reflecting ongoing growth.