Simplify Solutions—
Passionately Design the Future.

About Us

One Firm. Thirteen Offices. Endless Solutions.


We exist to make a difference, to make tomorrow better than today. For our communities, our clients, and each other. ISG fosters strong collaboration across architecture, engineering, environmental, and planning disciplines—providing clients a diverse knowledge base. ISG’s flexibility makes it possible; our focus and innovative solutions make it happen.

Core Values

Change is the only constant. ISG embraces and influences change. We work to be better tomorrow than we are today.

ISG works with clients as a team that values each other, challenges each other, and builds each other up. Together, we make a difference.

We understand that respect is earned, not given. ISG works to earn your respect and consideration.

We are quick to respond. ISG proactively communicates and moves forward with a sense of urgency.

We are committed to understanding the context, needs, and goals of others so that we can better serve you. By thinking like our clients, we will make a positive difference in our local communities and beyond.

The ISG Difference

Contextual Design
Our user-centric design process delivers quality solutions that meet and exceed clients’ visions. Context considers all the factors beyond four walls to customize every project for the client—goals, culture, history, and best practices.

Alternative Analysis
A problem-solving partnership to guide projects by providing one option of exactly what the client is expecting and enhanced alternative options that may be more beneficial.

Better Decisions, Faster
Develop consensus sooner. Draw a sketch, investigate an idea, and agree before committing big resources on an errant path. We seek to foster a better-decisions mentality.

ISG on the Move

ISG Takes Root In Rogers, Arkansas, With A New Office + Acquisition of Unit Architecture

August 17, 2023 (Rogers, Arkansas) – In the midst of celebrating their 50th anniversary, ISG is proud to announce expansion into Rogers, Arkansas. This strategic move marks a chapter of growth as the firm seeks to make a positive difference in more communities across the nation.
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ISG Reinforces Its Commitment to South Dakota With A New Office In Pierre

Pierre, South Dakota (August 15, 2023)—Within weeks of expanding its Sioux Falls footprint to The Bancorp Building at Cherapa Place, architecture, engineering, environmental, and planning firm ISG further strengthens its ability to support South Dakota communities by opening an office in Pierre. This new location will boost the firm’s ability to serve clients throughout central and western South Dakota.
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ISG Celebrates 50 Years of Business, Ready for 50 More

March 21, 2023 (Mankato, Minnesota) – ISG turns 50 years old in 2023. The firm of over 500 multi-disciplinary professionals, ranging from architects and designers to engineers, technologists, marketers, and project managers, now spans across four states across the upper Midwest with 11 offices.
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Environmental Firm to Host Southern Minnesota Lake Resources Conference

March 14, 2023 (Mankato, Minnesota) – ISG will host the inaugural Future of Southern Minnesota Lakes Conference on April 22, 2023, in Mankato, Minnesota. The conference will equip community members, lake associations, and lake stewards with the tools, approaches, and resources to care for the lakes of Southern Minnesota.
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