ISG Offices

Architecture + Engineering Services in Sioux Falls, SD

Address

345 North Reid Place

Suite 300

Sioux Falls, SD 57103

Call Us

605.274.6401

Monday-Friday

8:00 a.m.-5:00 p.m.

ISG Sioux Falls

1,500+ square feet of outdoor patio space, with views of the Big Sioux River and the Arc of Dreams landmark sculpture, is ideal for a game of bags, outdoor meetings, or happy hour.

In The Community

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Inside ISG’s Multidisciplinary Approach: Expertise, Collaboration, and Bold Ideas

Explore how ISG’s integrated expertise boosts teamwork, fuels fresh thinking, and drives inventive, high-impact project results.

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Community

Celebrating GIS Day and its Impact on Communities

Learn how geographic information systems (GIS) empower communities through data-driven planning, real-time mapping, and stakeholder engagement to shape smarter, more connected places.

Industry Insights

ISG Recognized as a 2025–26 Emerging Professional Friendly Firm for the Fourth Consecutive Cycle

ISG has been honored as a 2025–26 Emerging Professional Friendly Firm by AIA chapters in North Dakota, South Dakota, Wisconsin, and Minnesota in recognition of its commitment to fair compensation, licensure support, mentorship, and growth for early-career architects.

Industry Insights

Employee Owners

Featured Projects

No matter the project, we are here for it. Our partnerships and client relationships are a testament to the projects we have designed with our clients. Take a look!

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