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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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

ISG Opens Durham Office to Strengthen Presence and Drive Growth Across the Triangle

This strategic expansion strengthens ISG’s ability to serve clients, positively impact communities, and accelerate growth throughout the Triangle region.

Community

Press Releases

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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