Board Members
• David Justice
• Matt Musgrave
• Nathan Davidson
• Amy-Louise Pfeffer
• Mary Anne Sheahan
• Steve Spatz
Building Science Board of Directors – Bios
David Justice – Board Member
David Justice brings a wealth of experience in workforce development, strategic planning, and community engagement to the SEON Board. As Associate Director at Vermont Adult Learning, David has spearheaded initiatives focused on clean energy workforce training and poverty reduction. His background includes co-founding Discovering Deaf Worlds, an international nonprofit, and a deep commitment to education and accessibility. David’s expertise in program development and his passion for sustainable community growth will be invaluable assets to SEON as we advance high-performance building practices and build a clean economy.
Matt Musgrave – Board Member
Matt is a lifelong Vermonter who spent the first 20 years of his career in the residential real estate industry. There he got to know the needs of Vermonters and the challenges faced developing safe, efficient, and affordable homes that are desperately needed. Transitioning out of the real estate market, Matt joined the construction field as an advocate and association executive representing builders of all kinds throughout the state. As the Vermont Regional Director of the Associated Builders and Contractors, NH and VT Chapter, he is positioned to continue working to build a workforce that is skilled and ready to meet Vermonts needs.
Matt has a passion for bringing people together to meet common goals by engaging with different views to find solutions that fit Vermonts needs. Matts served on Vermonts lead taskforce, building energy code update working groups, Vermont Residential Contractor working group, Act 47 building energy study group, many workforce development groups, and past chair at the Central Vermont Chamber of Commerce. Matt brings pragmatic thinking and dedication to serving Vermont to all projects he participates in.
Nathan Davidson – Board Member
Nathan is an Economic Developer working for the State of Vermont’s Department of Economic Development. He received his bachelor’s degree in Community and International Development from the University of Vermont in 2021, at which point he enrolled in the AmeriCorps program to support homeless shelter programming for a nonprofit in Knoxville Tennessee. Upon realizing the importance of Vermont’s natural beauty in his life, he decided to combine his passion for housing development and his love of Vermont by tackling Vermont’s housing crisis as a Real Estate Developer for Downstreet Housing and Community Development. Having been raised in Vermont, he learned the importance of preserving our state’s natural beauty at a young age. He has a passion for strengthening Vermont’s rural and urban areas using smart growth principles to ensure that economic growth and environmental sustainability can coexist. As an economic development specialist with a background in affordable housing and social justice, he will provide a unique background to SEON’s board of directors to best support the needs of Vermonters.Amy-Louise Pfeffer – Board Member
Amy-Louise Pfeffer is a strategic leader with deep experience in nonprofit management, organizational development, and fundraising. She specializes in guiding mission-driven organizations toward sustainability through strategic planning, resource development, and board leadership. As the former Executive Director of The Stone Trust, she oversaw a major expansion, increasing training sites across North America and significantly growing the organization’s funding and impact.
With a background in environmental studies and community engagement, Amy-Louise has a strong track record of fostering collaboration, developing effective communication strategies, and aligning financial planning with organizational goals. She is passionate about advancing sustainable building practices and brings her expertise in governance and high-performance leadership to SEON’s board.
Mary Anne Sheahan – Board Member
Mary Anne Sheahan brings extensive experience in workforce development, talent management, and project management to her role as a member of SEON’s Board of Directors. As the Chief Talent Officer of the Vermont Business Roundtable’s Foundation, she leads the Talent Pipeline Management (TPM) initiative, an employer-led, data-driven model that has successfully addressed skills gaps in critical industries such as Construction, Healthcare, and Advanced Manufacturing.
Mary Anne’s career highlights include serving as the Executive Director for Leadership Champlain and overseeing Workforce Development for the Lake Champlain Chamber. She has held leadership roles at Middlebury Interactive Languages and consulted on continuous process improvement for prominent Vermont businesses, including Banknorth Group, Burton Snowboards, the University of Vermont, and the US Chamber of Commerce Foundation.
Mary Anne holds a Master’s degree in Business Administration and is certified as a Project Management Professional (PMP) and an Appreciative Inquiry Practitioner. Her expertise in talent development and management aligns perfectly with SEON’s mission to promote and implement best practices in building science.
Steve Spatz – Board Member
Steve Spatz is a Residential Energy Consultant and Account Manager with VEIC specializing in both Residential New Construction and Existing Homes programs and managing the partner contractors in Efficiency Vermont’s EEN contractor network in Vermont. Previously Steve owned and operated Redbarn Design and Build Inc, a residential construction and building energy contracting company. Steve is a BPI certified Building Analyst, Envelope Professional, Heating Professional, Healthy Home Evaluator, a licensed Home Inspector and is a certified HERS rater.
Steve received his undergraduate degree from McGill University and a master’s degree in Building Science from UMass Amherst. He lives in Putney, Vermont with his wife and two daughters and serves on his local school board.
Past Board Members
Jonathan Morse co-founded Mindel and Morse Builders in 1981, focusing on energy efficiency, sustainable materials, and high-quality craftsmanship. A dedicated advocate for building science education, he was a founding member of SEON and played a key role in advancing high-performance construction practices. In retirement, he remained passionate about training the next generation of builders in sustainable techniques.
Candace Pearson, Esq brought her expertise in resilient design, collaborative construction, and alternative project delivery to SEON’s board. As a leader at BuildingGreen and an accomplished writer and researcher, she played a key role in advancing sustainable building practices. Her passion for aligning project teams around shared values helped shape SEON’s mission to support high-performance construction.
Emma Spett brought expertise in community resilience, sustainable development, and environmental governance to SEON’s board. As a UVM Engagement Initiatives Coordinator and PhD candidate, she provided valuable insights into data-driven planning and rural capacity building, helping advance SEON’s mission in high-performance building and sustainability.
Gary Swindler brought decades of experience in building science and construction management to SEON’s board. With a background in energy consulting and high-performance building, he played a key role in advancing SEON’s mission. Beyond his work in the industry, he cultivated a diverse, sustainable farm in Guilford, reflecting his deep commitment to environmental stewardship.
Jason Van Nest brought his expertise in architecture, technology, and building innovation to SEON’s board. As an architect, professor, and consultant, he advanced sustainable design through cutting-edge technology and research. His work in BIM, virtual reality, and architectural education supported SEON’s mission to promote high-performance building and energy efficiency.