Sentry is a self-performing general contractor and design-build construction firm serving commercial, industrial, agricultural, and infrastructure markets across South Dakota and the Midwest.
Our seven integrated divisions are General Contracting, Electrical, Mechanical, Manufacturing, South Dakota Service, Controls & Automation, and Workover.
Together, our teams coordinate projects from early planning and construction through ongoing facility support.
1928 Calvin Drive
Watertown, SD 57201
(605) 753-0880
100 N Krohn Pl Suite #308
Sioux Falls, SD 57103
(605) 910-4730
Whether you’re planning a new facility, expanding your operation, or need service support, Sentry’s team is ready to help. From initial concept through long-term maintenance, we deliver self-performed construction, engineering, and product line solutions across South Dakota and the Midwest. Whether you have plans in hand or just an idea, we’re here to help you figure out the best path forward. Reach out to discuss your project, request an estimate, or connect with one of our division teams.
