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James P. Bosshart: Colorado 500 – Contractors – 2026

Co-Founder and Chairman, Calcon Construction

ColoradoBiz Staff //April 21, 2026//

James P. Bosshart: Colorado 500 – Contractors – 2026

Co-Founder and Chairman, Calcon Construction

ColoradoBiz Staff //April 21, 2026//

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Jim co-founded Calcon Constructors in 1981 and currently serves as Chairman. He is involved in all business aspects, including marketing, estimating, project management, and office management. A graduate of Iowa State University with distinction, he holds a Bachelor of Science in Construction Engineering. Jim has been actively engaged in the construction industry throughout his career, serving on numerous committees including a position on the Executive Committee Board of Directors for the Associated General Contractors of Colorado.

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