Building St. Louis for Over a Century
As one of the leading construction companies in St. Louis, KCI Construction has been shaping the city since 1922 — from humble beginnings as a family-owned company to becoming one of the region’s most respected employee-owned construction firms.
What started with a handful of builders and a big vision has grown into a 300+ person strong workforce capable of tackling $200M+ projects across the greater St. Louis area.
We’ve been here through it all—helping to build the infrastructure and facilities that move this city forward.
Learn More About Our HistoryRooted in St. Louis. Grown with Grit.
For more than 100 years, KCI has grown alongside the St. Louis region. We’ve stayed true to our roots while evolving to meet the ever-changing demands of our industry.
What hasn’t changed is our relentless commitment to doing the job right — safely, efficiently, and with integrity. Today, as a 100% employee-owned St. Louis construction company, every project we take on is personal. Our people don’t just work here — they own it.
St. Louis Construction Services & Self-Performing Strength
We bring hands-on experience to self-perform critical scopes of work. That means tighter project control, higher quality outcomes, and more reliable schedules — especially on complex jobs where precision matters.
Our self-perform capabilities include:
- Heavy civil scopes
- Structural concrete
- Excavation and earthwork
- Underground utilities
- Carpentry and demolition
Our Services
Built for What’s Next
Our story in St. Louis is more than history — it’s a commitment to the future. As we look ahead, we’re investing in people, technology, and processes that keep KCI Construction at the forefront of the industry.
We’re building careers. We’re building trust. And we’re building the next chapter of St. Louis.KCI is proud to be one of the construction companies St. Louis relies on to build its future.