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

Bishop Dudley Hospitality House // Bishop Dudley Hospitality House

O'Gorman High School // OG Hallway

Sammons Financial National Headquarters // Sammons Financial Cafeteria

The Country Club of Sioux Falls // Pool

O'Gorman Weight Room //

Sanford Pentagon //

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

USD Arena //

Holy Spirit Sanctuary Remodel //

Sanford Fieldhouse // Sanford Fieldhouse Track

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

Dakota Beverage Corporate Office and Warehouse //

Electric Construction // Reception

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

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.