Founded in 1855, The Weitz Company is a national general contractor, design-builder and construction manager that serves all 50 U.S. states. Weitz is one of the oldest general contractors in the United States and an industry leader in lean construction; senior living; sustainable building; and virtual design and construction. Headquartered in Des Moines, Iowa, The Weitz Company annually ranks in the top tier of Engineering News-Record’s Top 400 Contractors and Building Design+Construction’s Giants 300 Contractors lists.