About Us

Tricia Loe, President

Tricia Loe, LEED AP BD+C and LEED AP ID+C, combines her engineering experience, business insight, and team leadership skills in her role as President of Sustainable Concepts.

With extensive experience in USGBC’s LEED© green building certification program, as well as other green building rating programs, Tricia reviews projects from design development through commissioning to fulfill the requirements of certification and achieve the clients’ goals. Her experience includes building energy models to analyze building energy performance.

Tricia is proud to be a Living Building Challenge Ambassador/ Presenter and frequently gives presentations to professional organizations on the Living Building Challenge and other green building and sustainability topics.

Tricia holds a BS in Mechanical Engineering from Louisiana State University and an MBA from Southern Methodist University. She is an active member of the USGBC North Texas Chapter, the AIA Committee on the Environment (COTE), and is a founder and Co-Facilitator of the North Texas Living Building Challenge Collaborative.

LEED AP, Building Design + Construction (BD+C)
LEED AP, Interior Design + Construction (ID+C)
Living Building Challenge Ambassador-Presenter
Certified Energy Manager (CEM)
Green Globes Professional (GGP)
Certified Green Professional (NAHB Green Certification Program)
BESA (Building Energy Simulation Analyst) Certification from Association of Energy Engineers
QCxP (Qualified Commissioning Professional) Certification

Chair, USGBC Education & Events, USGBC North Texas Chapter
Chair Elect, Dallas AIA Committee on the Environment (COTE)
Collaborative Co-Facilitator, Living Building Challenge North Texas
Professional Society Memberships:
• ASHRAE, Dallas Chapter
• AEE & NTAEE (Association of Energy Engineers
& N TX Association of Energy Engineers)
• Women in the Environment



Sandra Heffernan, Vice-President

Sandra Heffernan, LEED AP BD+C, is Vice-President of Sustainable Concepts. Sandra is a 25-year veteran of the commercial real estate business. In 2006 Sandra served as the owner representative to build the first privately held LEED Platinum Core and Shell building in the US. Since that time Sandra has been responsible for providing LEED consulting and coordination services for numerous LEED New Construction, Commercial Interiors, and Existing Building projects.



Susan Haas Ufer, Project Manager

Susan Haas Ufer joined Sustainable Concepts as a Project Manager in 2016 and is responsible for assisting clients to achieve their sustainability goals through energy efficiency, water use reduction, materials optimization, and site conservation. Susan is a licensed landscape architect, with a degree from Texas A&M University and holds a Residential Building Performance Technology certificate from Cedar Valley College. Susan is a member of the North Texas Renewable Energy Group (NTREG), Women in the Environment (WE), and is a Solar Ambassador for SolarCity Corporation.