Green Building United Staff

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Executive Director

Rich Freeh


Rich is Green Building United’s Executive Director. In this capacity he supports GBU’s staff, Board of Directors, and membership in achieving GBU’s vision to transform the communities it serves through green building education and advocacy. Prior to joining GBU, Rich served as the Network Team Director at the Urban Sustainability Directors Network, a membership organization of city and county sustainability professionals in the U.S. and Canada, and as Senior Program Manager with the City of Philadelphia’s Office of Sustainability. He holds a Master’s in City Planning from the University of Pennsylvania. Rich lives in the Olde Richmond neighborhood of Philadelphia with his fiancée Hannah and their three cats.

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Data and Operations Director

Marjorie Alexander


Marjorie (she/her) is responsible for supporting Green Building United’s programmatic work. Shortly before joining Green Building United, Marjorie moved from Los Angeles where she contributed much of her time to Sierra Club, other environmental non-profits, and various affordable housing advocacy groups. She is excited to be part of GBU in the movement for sustainable building and climate resilience here in Philadelphia. Marjorie holds a masters of science in environmental studies from Green Mountain College and brings additional experience in event planning and management, construction, and GIS.

Marjorie is also the host of A Sustainable Mind podcast where she interviews the change-makers behind some of today’s most impactful environmental campaigns, organizations, and startups.

Contact Marjorie with questions related to education, events, and volunteer opportunities.

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Program Manager

Isabelle Coupet


Isabelle supports Green Building United’s Building Energy Performance Program and helps to grow and support the Philadelphia 2030 District. She holds a bachelor's in architectural engineering from Drexel University. Isabelle is interested in sustainable building practices and designs for the purpose of developing and implementing sustainability goals.


Policy and Communications Manager

Daniel Marzec


Daniel Marzec (He/Him/His) manages and supports GBU's policy and communications. With a decade of communications experience, Daniel received his Master's degree from Drexel University in Communications, Culture, and Media, and was most recently the communications director to the New Mexico Speaker of the House in Santa Fe. As communications director, Daniel aided and supported the passage of some of the nation's most robust carbon reduction legislation and goals along with a framework for transitioning the state to a clean energy economy.

Daniel is an avid outdoorsman with a passion for white water rafting and conservation and has long worked with leaders, stakeholders, and communities in ensuring equal access to opportunities and resources while building resiliency in our built environment.


Senior Program Manager for Community Engagement

Karen Igou


Karen is Green Building United's Delaware Program Manager. She oversees the Delaware Pathways to Green Schools Program, and the EPA-funded Building Climate Resiliency through Community Partnerships, Engagement, and Education program in Northeast Wilmington, where she supports and collaborates with the GBU Delaware Community on education and policy initiatives. Prior to joining GBU, Karen was a small business owner in the sustainable agriculture field and a social worker addressing housing and employment insecurity. She has also been a climate, ecological, and social justice activist and organizer for over two decades. Karen holds a Bachelor of Social Work from North Carolina State University and substantial experience in sustainable farming, biodiversity, and furthering social movements through non-violent direct action.


Senior Program Manager

Emily Pugliese


Emily (she/her/hers) is Green Building United’s Senior Program Manager for Sustainable Communities. She oversees the Climate Ready Community Partnership, the Housing Equity Repairs and Electrification for Climate Justice (HERE for Climate Justice) coalition, and the Philadelphia Energy Benchmarking Program. Emily also helps with GBU’s policy initiatives. Prior to joining GBU, Emily served as a Legislative Assistant in the Pennsylvania State Senate and as an Environmental Specialist with a sustainability focused consulting firm. She holds a Master’s in Environmental Policy from Drexel University. Emily lives in the Mt Airy section of Philadelphia with her husband, 2 kids, and 2 dogs.


Benchmarking Program Manager

Rachel Wilkins


As Energy Benchmarking Program Manager, Rachel assists with the management and implementation of Philadelphia’s Energy Benchmarking Program and the Regional Benchmarking Program. She holds a BFA in Studio Art and a minor in Computer Science from the University of Texas and has experience providing technical support and administration for CRM software. Her work toward building a more sustainable Philadelphia has included operational positions at regional food and recycling hubs, focusing on creating a more local, circular and connected economy.

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