Pre-Engineered Metal Buildings
From the foundation up, your metal building project moves faster, costs less, and last longer with EBG and STAR Building Systems.
Eagan Building Group designs and builds metal buildings for businesses across the St. Louis Metro region. As a design+build general contractor and authorized STAR Building Systems builder, we deliver engineering strength, product quality, and warranty backing on every project. The result: a faster timeline, a cleaner budget, and a building that performs for decades.
The Eagan Building Group and STAR Building Systems Partnership
Two names, one project. EBG and STAR Building Systems work together to deliver metal buildings that meet your needs without the typical surprises. STAR brings 60+ years of engineering and manufacturing strength. EBG brings the local design, construction, and project management expertise that turns those components into a finished building you can move into.
Why We chose STAR
- 60+ years of metal building manufacturing experience
- Engineering-led approach that optimizes every component for cost and performance
- Quality controls that protect your warranty for the long haul
- Nationwide network of authorized builders, with EBG proudly representing St. Louis County, St. Charles County, Warren County, and Franklin County in Missouri.
What "Authorized Builder" Means for You
- A single point of contact through the entire project
- Direct manufacturer pricing and design support
- Engineering and fabrication aligned with your project schedule
- Confidence that your building meets code, performs as designed, and is back by STAR's warranty
Where Pre-Engineered Metal Buildings Fit

Industrial & Manufacturing
Production floors, equipment storage, processing facilities. Clear-span interiors give you room to move heavy machinery, route material, and reconfigure as your operation grows. Add cranes, mezzanines, dock doors, or office build-outs without redesigning the whole structure

Commercial, Retail, and Office
Showrooms, dealerships, retail centers, professional office space. Today's metal buildings accommodate storefront glass, architectural finishes, brick or masonry wainscoting, and custom rooflines. Your building can look as polished as the brand inside.

Warehousing & Storage
Distribution, cold storage, self-storage, third-party logistics. PEMBs deliver high-bay clear span, energy-efficient envelopes, and easy expansion when your footprint grows.
Why Choose a Pre-Engineered Metal Building
Faster Construction
Pre-engineering and off-site fabrication compress your timeline. While site work is happening, your building components are being manufactured in a controlled environment, ready to assemble on arrival.
Clear-Span Interiors
No interior columns means no compromises on how you use the space. Reconfigure the floor plan, expand operations, or change tenants without structural rework.
Lower Total Cost
Optimized structural components, less field labor, less material waste, and shorter project duration all add up. Metal buildings are economical to construct and just as economical to maintain.
Energy Efficient Envelope
Modern insulation systems deliver R-values that meet or exceed energy code, including the Energy Saver System (R30 to R38) and insulated metal panels (R8 per inch). The savings show up every month the building is in service.
50+ Year Lifespan
Steel does not rot, warp, or feed termites. Properly designed and finished, a STAR Building Systems metal building protects your investment for half a century or more.
Easy to Expand
Add bays to either end with minimal disruption. Future-proofing your investment from day one.
Our Design+Build Process
Discovery
We meet, walk your site if possible, and listen. What is the building for? What does it need to do today and ten years from now? We come away with a clear scope in order to create a realistic conceptual budget.
Design
EBGs design team develops architectural and site plans tailored to your operation. We coordinate with civil and structural engineering, and we loop in STAR early to optimize the building system.
Engineering with STAR
STAR Building Systems manufactures your primary frame, secondary framing, roof, and wall components in a controlled facility. Components arrive at the site numbered, drilled, and ready to bolt together.
Construction
EBG coordinates site work, foundations, erection, and finish trades. One team, one schedule, one accountability.
Closeout
Punch list, training, warranty documentation, and final walkthrough. We do not disappear when the keys turn over.

Gasconade County R-1 School District
Eagan Building Group was the general contractor for the Maintenance & Transportation building in Hermann, MO. The project consisted of a 6,000 square foot metal building including maintenance offices, interior mezzanine, maintenance bay, and wash bay.
Start with a Planning Conversation
If you are planning a new construction build, start with a conversation about structured preconstruction planning to align scope, budget, and timeline before construction begins.