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ISG Recognized Among Top Building Design Firms

Lynn Bruns, PE, LEED AP
,
Chief Executive Officer
September 11, 2026

ISG has been recognized by Building Design + Construction (BD+C) in its 2026 Giants 400 Report, ranking #23 on the Top 40 Engineering/Architecture Firms list and #139 on the Top 400 Building Design Firms list.

Earning a place on both lists reflects the value of ISG’s multidisciplinary approach, bringing architecture and engineering expertise together to deliver a more connected design experience for clients and communities. Now in its 50th edition, the Giants 400 Report ranks the nation’s largest architecture, engineering, and construction firms based on gross revenue from nonresidential and multifamily building work, with nearly 600 firms submitting information for this year’s report.

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Lynn Bruns, PE, LEED AP
Chief Executive Officer
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