(512) 997-8844 | contact@greenlivingllc.com | contact@yoyo.energy

Senior Team Members


Elizabeth Repin – LEED AP & Principal

Elizabeth Repin received her LEED accreditation in 2006 and founded Green Living, LLC, a LEED consulting and building commissioning firm.  With over 25 years of managing integrated teams for corporations, including her own, experience required her to see this growing industry from a business perspective. Daily she seeks smarter solutions, new ways to further reduce risk for her clients, and opportunities for continued learning in an ever-changing field. Green Living’s clients include Hanover, Hines, Dinerstein, JP Morgan, CDK, and the CORE, among others. Repin is grateful to have entered into this industry while it was still in its infancy.

Hsin Yi Hsieh – LEED AP, M.Arch., CxA, Senior Project Manager

Hsin Yi Hsieh is a trained architect and LEED Accredited Professional with an M.Arch. in Sustainable Design from The University of Texas at Austin’s School of Architecture. She is responsible for commissioning and managing projects through all phases of design to take them to LEED certification. Hsieh has led the process for 2,643,304 gross square feet of LEED-certified projects across the United States and has served as LEED consultant for over 4 million square feet of LEED-registered projects. She has also served as a Commissioning Agent for over 6 million square feet of LEED- and AEGB-registered projects. With over 9 years of experience in the architecture and construction industry, Hsieh provides the required technical, operational, and design direction to project teams for successful integration of sustainable/LEED principles into the design process.

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Ankur Khandelwal – LEED AP, M.S. (Mech. Eng.), Senior Energy Manager

Ankur Khandelwal is a trained mechanical engineer and has over four years’ experience in the field of LEED energy simulation, LEED MEP credits, and LEED project management. Ankur has led various green building projects in India and the United States and previously worked with AECOM India in HVAC design and, most recently, as an energy analyst. With a master’s degree in Thermal Engineering from IIT Delhi and bachelor’s degree from NIT-Jaipur, he has performed simulations for approximately thirty LEED projects and over 3 million square feet of LEED- and AEGB-registered/certified projects. He has hands-on experience designing building energy systems with a focus on energy conservation and thermal and visual comfort for occupants. For Green Living, he manages LEED projects from design through construction, performs MEP credits with first-pass acceptance from the review teams, and manages all aspects of energy analysis.

Bill Lodato – LEEP AP, P.E., CxA Technical Project Director

Bill Lodato has over 20 years of experience in project management, design, installation, and commissioning of building systems in various life sciences, educational, industrial, healthcare, commercial, hospitality, and research facilities. Responsibilities have included serving as the commissioning agent on substantial construction projects and project management on time/budget sensitive projects.  Lodato has led design teams for complex building HVAC and Automation systems, including those in cGMP environments and mission-critical data centers.  Lodato is highly experienced in building systems with a focus on start-up, commissioning, and maintenance.

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Don Hardwick – LEED AP, NAHB National Green Building Large Multifamily Verifier/ Project Manager

Don Hardwick has over six years of experience in residential construction. Hardwick owned a residential remodeling company for two years, incorporating “green” products and sustainable activities prior to working for Green Living, LLC. Don has been studying the green building industry for the past five years and has coached teams from design through construction.

Anastasia Calhoun – LEED AP, M.Arch., Senior Design Consultant 

Anastasia Calhoun graduated magna cum laude with a B.A. from the University of Oklahoma, and is a trained architect and LEED AP with an M.Arch. focused on sustainable design from The University of Texas at Austin’s School of Architecture. Anastasia served as project manager for a national environmental best practices training program for the motor trade industry in Australia, and developed a citywide educational program aimed at increasing environmental awareness and participation in recycling and energy conservation efforts. Anastasia has over seven years of management experience for private businesses, universities, and nonprofit organizations. She has served as editor for eight books on architecture and for a graduate thesis on integrated workflows for wood modular construction.


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