Keller, Inc., headquartered in Kaukauna, Wisconsin, is a 100% employee-owned design-build general contractor with a legacy dating back to 1960. Specializing in commercial, industrial, and agricultural construction, Keller offers fully integrated services including architecture, engineering, and project management. With additional offices in Wausau, Germantown, and Sun Prairie, their team of over 275 employee-owners is committed to delivering high-quality, customized building solutions. Known for their integrity, safety, and ownership-driven culture, Keller treats every project as if it were their own—ensuring exceptional craftsmanship, responsive service, and lasting value for clients across Wisconsin and beyond.