Pentagon Heritage Court _DSC7716 _DSC5331 IMG_2275 Track OG Hallway _DSC3949 Sammons Financial Cafeteria O'Gorman Performing Arts Center Theater Room OG_Weight_ROom_41 Bishop2 Holy Spirit Ashley31 Dakota_Beverage51
Pentagon Heritage Court _DSC7716 _DSC5331 IMG_2275 Track OG Hallway _DSC3949 Sammons Financial Cafeteria O'Gorman Performing Arts Center Theater Room OG_Weight_ROom_41 Bishop2 Holy Spirit Ashley31 Dakota_Beverage51

Sanford Pentagon //

Electric Construction // Reception

The Country Club of Sioux Falls // Pool

USD Arena //

Sanford Fieldhouse // Sanford Fieldhouse Track

O'Gorman High School // OG Hallway

Plains Commerce Bank Sioux Falls // Plains Commerce Bank Sioux Falls

Sammons Financial National Headquarters // Sammons Financial Cafeteria

O'Gorman Performing Arts Center // O'Gorman Performing Arts Center Theater Room

O'Gorman Weight Room //

Bishop Dudley Hospitality House // Bishop Dudley Hospitality House

Holy Spirit Sanctuary Remodel //

Ashley Furniture Store-Fargo, ND // Ashley Furniture Showroom

Dakota Beverage Corporate Office and Warehouse //

A Real Design/Build Company


Fiegen Construction Co., a second-generation family-owned and operated business is proud to carry on a heritage started 45+ years ago. The company, founded by Ron Fiegen, started with a foundation of steel and precast concrete erection, heavy rigging and crane rental services. This work continues today as the backbone of their general construction work, but Fiegen Construction Co. quickly evolved into a full-service general contractor and most recently combined architecture and construction under the same roof, a method known as Design/Build.

Design/Build provides Clients with a single committed Team that has full responsibility from conception (design) to completion (build). Having these resources as a single entity provides our Clients with a simpler, more streamlined process that saves both time and money, reduces oversights and overruns, and provides a more informed decision making process.