Sentry is a self-performing general contractor and design-build construction firm, widely recognized for our EPC (Engineering, Procurement, and Construction) and Construction Management at Risk (CMAR) capabilities. We serve commercial, industrial, agricultural, and infrastructure markets across South Dakota and the Midwest. With in-house divisions spanning electrical, mechanical, structural steel, manufacturing, project management, field services, and more, we bring the strength of our own teams to every project.

From concept to completion, Sentry’s licensed architects, project managers, engineers, and trade professionals coordinate every phase of your build. Architectural design, planning, engineering, fabrication, and construction are all handled under one roof, giving clients tighter control over quality, scheduling, and safety, and the confidence of one trusted partner from start to finish.