• Industry


  • Services offered

    Architecture, Civil Engineering, Electrical Engineering, Environmental, Interior Design, Land Surveying, Landscape Architecture, Mechanical Engineering, Planning, Refrigeration Engineering, Structural Engineering, Technology Engineering, Telecommunications, Transportation Engineering, Visualization, Water/Wastewater Engineering

  • Has Experience with these buildings:

    Assembly (Worship, Restaurant, Theater), Business (Office), Civic (Recreational), Educational, Factory/Industrial (warehouse, storage, parking, etc.), Government, Hotel/Motel, Institutional, Mercantile (Retail), Mixed-Use, Multi-Family (Apartments, Condos), Student Housing

  • Has Experience with these materials:

    Mass Timber, Cross-Laminated Timber (CLT), Timber-Frame / Post and Beam, Heavy Timber Decking, Hybrid (wood with steel or concrete), Structural Composite Lumber (e.g. LVL and LSL), Light-Frame, I-joists, Lumber, Open-web trusses, Wood structural panels, Fasteners / Hardware

  • Has Experience with construction types:

    I-A, I-B, II-A, II-B, III-A, III-B, V-A, V-B

Big ideas don’t scare us. They inspire us. We don’t shy away from challenges or complex concepts—we have built our business on them. As an architecture and engineering firm, ISG knows that change is the only constant, so we embrace and influence it. We work to be better tomorrow than we are today.

ISG has a full-service team of 500+ professionals who collaborate to foster cohesive design systems. Our architects sit next to engineers, planners, and environmental experts, giving our multi-disciplinary team the ability to fully embrace the advantages of mass timber for the benefit of our clients. Mass timber inspires ISG’s design approach with a blend of aesthetics and functionality.

Among the fastest growing firms in the industry, ISG has grown to serve 12 market sectors  by expanding geographies, diversifying our client base, and investing in our multi-disciplinary service offerings.
Operating Locations

Bloomington, MN


Brookfield, WI

Dakota Dunes

Dakota Dunes, SD

Des Moines

Des Moines, IA

Green Bay

Green Bay, WI

La Crosse

La Crosse, WI


Pierre, SD


Rochester, MN


Rogers, AR

Sioux Falls

Sioux Falls, SD

St. Louis Park

St. Louis Park, MN

Storm Lake

Storm Lake, IA


Waterloo, IA

Innovative Light-Frame and Mass Timber Project Portfolio:
Projects Filtered By:

South Dakota Cultural Heritage Center Expansion

Pierre, SD

Theodore Roosevelt Presidential Library

Medora, ND

The Dakota Flats at Cherapa Place

Sioux Falls, SD

The Clark Lofts at Cherapa Place

Sioux Falls, SD