CornerStone One
ConstructionWisconsin, United States51-200 Employees
CornerStone One is a construction firm based in Brookfield, Wisconsin, that provides an integrated package of site work and utilities services. It combines excavation and grading with site utilities installation and commercial plumbing system design and installation, handling projects from initial planning through engineering to execution. The company emphasizes coordination and relies on technology and clear communication to help projects meet deadlines and stay within budget. Its primary market comprises commercial construction projects in Southeastern Wisconsin that require coordinated site preparation and utility installation. The firm has expanded into Northeastern Wisconsin with a new facility in Oshkosh, Wisconsin, signaling geographic growth beyond the original footprint.