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Lothan Van Hook DeStefano Architecture LLC
57 West Grand Ave., Suite 300
Chicago, IL 60654
Phone: (312) 527-1500



I see myself as the project overseer and an advocate to the client. My purpose is to be service oriented and I take it seriously.

Founding Principal, Mary Ann Van Hook, AIA, LEED AP leads the management of the firm and serves as the Principal In Charge overseeing quality control and contract compliance for diverse building types and multi-project programs. Nearly 40 years of experience performing a variety of roles, including Managing Architect, Architect of Record, Design Architect, Owner’s Representative and Construction Manager, uniquely positions her to view a project from many perspectives. In her role as the Principal-In-Charge on projects in the office, Mary Ann oversees the contractual and staffing needs with the right coordination of management, design, and technical activities in mind to ensure project success while adhering to scope and budget. Clients and colleagues appreciate her knowledge of construction and ability to read people as well as she reads a set of drawings. Her energetic determination combined with her unique skills enable her to move a project along while focusing on constructability. Typical projects include new construction, renovation, and program management in the Education, Municipal, Commercial, and Multi-Family Residential markets.

Mary Ann is a strong advocate for the growth and equitable participation of disadvantaged, minority and woman owned businesses in the AEC industry. She is an involved member of Hispanic American Construction Industry Association and currently serves on Board of Directors, the Scholarship Foundation Board, and on the Professional Development Committee. She also is a certified Illinois Capital Development Board Project Manager for Architecture/Engineering and a member of several design industry organizations.

Mary Ann received her Master of Architecture from the University of Illinois at Chicago. She received her Bachelor of Science in Architecture from the University of Illinois at Urbana Champaign where she participated in Unite Pedigogiqued’ Architecture 3 while attending the Ecoles des Beaux Arts in Versailles, France.

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