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Staff & Executive Committee

Jonathan Kraatz

Executive Director, USGBC Texas Chapter

Kraatz serves as Executive Director of USGBC Texas since January 2016 after successfully merging four Legacy U.S. Green Building Council Chapters across the state.

His leadership extends beyond USGBC Texas through key sustainability roles including founding member of the Dallas 2030 District Leadership Council, Co-Chair of the City of Fort Worth Better Buildings Challenge Advisory Council (2017-2019), and member of the City of Dallas' Comprehensive Climate Action Plan Stakeholder Advisory Committee.

A recognized expert in green building practices, Kraatz regularly speaks on USGBC's mission, LEED rating systems, and building sustainability. He was named to the Dallas Business Journal's "Who's Who in Energy" from     2012-2014 and received the President's Volunteer Service Award in 2015 for his work with USGBC Chapter     Network Evolution Working Groups.

Tricia Loe, LEED AP BD+C, LEED AP ID+C, WELL AP, LFA

Chair, USGBC Texas Chapter
Director, North Texas Region

Tricia is President of Sustainable Concepts, LLC, a certified Women-Owned Business Enterprise (WBE) specializing in high-performance building consulting. She combines deep technical knowledge with a collaborative approach to help organizations navigate the complexities of sustainable design and construction.

As a Living Building Challenge Ambassador-Presenter, Tricia regularly speaks to professional organizations about the Living Building Challenge and other green building and sustainability topics. She currently serves as Director for the USGBC Texas Chapter and is past-chair of the Dallas AIA Committee on the Environment (COTE). 


Andrew Clements


Treasurer, USGBC Texas Chapter

Director, Central Texas Region

Andrew is a Project Manager for the City of Austin Public Works Department's Architectural Project Management Division, bringing over 35 years of architecture and planning experience across both private firms and public sector organizations including Austin ISD, Texas State Health Services, and the City of Austin.

A fifteen-year USGBC member, Andrew served on the Central Texas Regional Council as Board Member and Treasurer before his election to the State Board in 2020. He earned his LEED AP BD+C credential in 2013 and has maintained this certification continuously.

Andrew has served on the City of San Antonio Board of Adjustment, City of Austin's Urban Transportation          Commission and Downtown Commission, and currently serves on the Foundation Communities Board in Austin.

Paul Brown
Treasurer, USGBC Texas Chapter
Director, Central Texas Region

Paul is a president and co-founder of Bautex Systems, LLC, a Texas based manufacturer of high performance insulated concrete wall systems. He has devoted his career to building innovative start-up companies in a wide range of industries including consumer goods manufacturing, enterprise software, web technologies, and IP telecommunications. Paul received his Bachelor of Arts from the Plan II Honors Program at The University of Texas at Austin and his MBA from The Fuqua School of Business at Duke University. 

Andrew is a Project Manager for the City of Austin, Public Works Department in the Architectural Project Management Division.  He has been involved in the USGBC for fifteen years, serving on the Central Texas Regional Council of USGGC Texas as a Board Member and Treasurer, before being elected to the State Board in 2020.  He gained his LEED AP BD+C credential in 2013 and has maintained it since.  He has over 35 years of professional architecture and planning experience, working in a variety of both private firms in Texas and government sector employers, including Austin Independent School District, Texas State Health Department Services, and the City of Austin.  He has served on the City of San Antonio Board of Adjustment, the City of Austin's Urban Transportation Commission and Downtown Commission; and also serves currently on the non-profit Foundation Communities Board in Austin.

Maria Perez, LEED Fellow, WELL AP

Past Chair, USGBC Texas Chapter
Director, Texas Gulf Coast Region

Maria Perez is Senior Associate and Director of Sustainable Design for Gensler, serving as one of the firm's leading sustainability ambassadors across its global network of 7,000+ professionals in 50 offices. She engages staff, clients, and the public on innovative sustainable design, construction, and operational strategies.

A licensed architect in Texas and recognized expert in LEED standards, Maria is a leading advocate for performance-based design. She was named a LEED Fellow in 2015 for her exemplary leadership and commitment to green building and sustainability. She holds multiple LEED Accredited Professional credentials and serves on the LEEDv5 BD+C Consensus Committee.


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