Sentry started as a one-crane company serving the oilfields of western North Dakota. One crew. One customer at a time. We built our name by showing up, working hard and finding a way to get the job done.

As our customers’ needs grew, Sentry grew with them. We added people, equipment and capabilities that allowed us to take on more of the work and support projects across new industries. That growth has created opportunities for our team, helped provide a living for the families who depend on Sentry, and given our customers access to more of the services they need from one company.

Today, Sentry is a self-performing general contractor and Design-Build construction firm serving customers across South Dakota and the Midwest. Our seven integrated divisions include General Contracting, Electrical, Mechanical, Manufacturing, South Dakota Service, Controls & Automation and Workover.

From smaller service work and facility improvements to large, complex construction projects, every job matters. Our project managers, superintendents, architects, engineers, tradespeople, fabricators and field crews work together to solve problems, coordinate the work and keep projects moving.

Having these capabilities in-house gives us greater control of quality, schedule and safety while giving our customers one coordinated team from early planning through construction and closeout.

Sentry has grown, but the way we work has not changed. We work hard, stay flexible, take care of our customers and take care of the people who make the work possible.

Flexible. Innovative. Results.