Millstadt, IL
A house that looks like a barn, with connecting breezeway to three car garage and three-seasons... view project

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Do your dreams come only in one color? Does your imagination fit in a 20 x 20 box? No?
 
So if you’re building a structure from the ground up, why settle for a ‘packaged’ footprint, a ‘standard’ design, or a ‘basic’ color?  Learn More...



 

You decide what goes in your O’Neil Building. We’ll take care of what goes into the building system.

We combine fully engineered designs, quality materials, and pride of craftsmanship to create buildings that will be a source of pride for years to come.  Learn More...



At O’Neil, we’re environmentally sensitive, using cutting-edge products and technology to ‘build green’ on every project.

From energy efficient window systems to recycled materials to innovative insulation technology, we have the products and experience to make your building as protective to the environment as it is to what you put in it. Learn More...