500+
EPC Projects Completed
3,000+
Total Jobs Completed
200+
Employees
2
Office Locations
Sentry provides engineering, procurement, and construction (EPC), general contracting, and design-build services across South Dakota and the Midwest. Based in Watertown and Sioux Falls, our self-performing teams serve commercial, industrial, agricultural, and infrastructure clients.
Our seven divisions—General Contracting, Electrical, Mechanical, Manufacturing, South Dakota Service, Controls & Automation, and Workover—provide construction, trade, manufacturing, automation, and field service capabilities. We coordinate the teams and resources needed for each project, from planning and construction to installation and ongoing support.
Tell us about your project, facility, or service needs. Our team can discuss your location, schedule, and next steps.
