St. Louis
St. Louis
345 Marshall Avenue, Suite 302
Webster Groves, MO 63119
314-421-0042
Setting the Bar for St. Louis Civil Construction
Since our inception in 1995, Castle Contracting has remained committed to meeting clients’ needs with expertise and innovation. Tackling projects spanning multiple industries and sizes, our safe, high-quality sitework offers optimal results to our valued clients and communities.
St. Louis, Missouri's Leading Sitework Contractor
When clients want to succeed, they choose Castle as their go-to sitework contractor. Why? Our all-in, boots-on-the-ground mentality honors Castle’s values and its partners’ expectations, ensuring that we complete projects on time and on budget.
Clients benefit from consistent, first-rate results from a company they can trust. Our St. Louis team members and craft professionals bring reliable, top talent and valuable experience to Castle’s wide range of civil construction services.
Where We've Worked
We proudly operate across our Nation’s heartland, completing exceptional projects built to last.
Supporting St. Louis Communities
New neighborhoods, schools, healthcare, and utilities in St. Louis, MO, and beyond: Castle is committed to being America’s leading sitework contractor, building stronger communities as a trusted civil construction provider. Our teams have always operated with professionalism and respect for each other, our clients, and the areas that we serve. That’s something to count on.
St. Louis Projects
Castle in Action: Projects That Shape Our World
Browse our work to learn more about Castle's impact.
Awards and Recognition
2020 - 2024 Zero Recordable Accidents Safety Award
AGC Missouri
2021 Constructech Vision Gold Award
Commercial/Specialty Contractor: Excavation Work $26-$100 million
Constructech Magazine
2021 Safety Excellence Award
Subcontractor - 2nd Place
NAWIC Midwest Region
2023 Construction Project Safety Award
Bayer East Campus Utility Infrastructure Utility
AGC Missouri2021 SLC3 CII Best Practice Award
Front End Planning: Saint Louis University Utility System Upgrade
St. Louis Council of Construction Consumers2021 - 2022 Construction Project Safety Award
Next NGA West
AGC Missouri2020 AGC of Missouri Keystone Award
2nd Place Mid-America GC/CM/Prime Contractor Building Construction Under $5 Million
The Hill Development
AGC Missouri2020 Construction Project Safety Award
Washington University East End Transformation Project
AGC Missouri2020 SLC3 CII Best Practice Award
Finalist - Front End Planning: The Hill Development
St. Louis Council of Construction Consumers
Achieve Your Career Goals
at Castle Contracting
Related Insights
Foreman JD Louvier Builds on a Strong Family Foundation
At the age of 15, Jeremy "JD" Louvier began his on-the-job training for a full…
Mark Ragan Enjoys Making the Rounds
Superintendent Mark Ragan spends most workdays traversing the city of St. Louis as…
Family Ties: Jesse and Jake DeRousse Follow in Their Dad’s Footsteps
Brothers Jesse and Jake DeRousse both trace their love of heavy equipment to a…
Start Smart: 5 Benefits of Engaging Castle Early
Castle is fortunate to work for a wide range of clients, including owners…
J.L. Mickan Digs Into Solar Work
Growing up in the southern Missouri town of Annapolis, J.L. Mickan honed his…
Meet Santiago Mendez, the Newest Addition to Castle’s Design-Build Team
A chance encounter at the Kansas City Chiefs Super Bowl victory parade in February…
