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Principal Corporate Headquarters
Des Moines, IA

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Principal is more than a year into a $284 million renovation of its downtown campus. The project will overhaul more than 1.2 million square feet of office space in three buildings, add or replace three skywalk bridges, and upgrade the exterior of the buildings to create more of a campus atmosphere.

Interior upgrades include renovation of office areas, common spaces, furniture, fixtures, meeting space consolidation and food service upgrades. The improvements are intended to increase collaboration between employees.

Progress is currently being made on the 7th Street Parking Garage, Corp 1 Interior Renovations, and Corp 2 Plaza. 

Project Details
Architect  OPN Architects
Contractor  Ryan Companies

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Corporate Office

408 West Mission St.
​Strawberry Point, IA 52076

Contact Us

Strawberry Point: 563.933.2296
Omaha: 402.895.4604
Des Moines: 515.289.2036
  • Home
  • About Us
    • Vision and Mission
    • History
    • Safety
    • Awards
    • Join Our Team
    • In the News
  • Projects
    • Completed Projects
  • Services
    • Pre-Construction
    • Construction
    • Continuing Education
  • Restoration
  • Contact Us