Changsun Yoo
Changsun Yoo's Illinois Architect stamp
Watermarked specimen
This downloadable Illinois Architect stamp specimen was generated for Changsun Yoo from the public license details in this directory listing, including license number 001027544. The preview is watermarked and does not prove that Changsun Yoo approved or sealed a document.
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Changsun Yoo holds a Architect license in Illinois. The credential is registered under license number 001027544 and is currently active. It has been on record since 2026. Licensure is issued and verifiable through the Illinois Department of Financial and Professional Regulation - Design Professionals.