Mark Rosen is a professional architect, CACEA Master Energy Advisor, and nationally recognized building science leader. As Partner and Director of Building Science at Building Knowledge Canada (BKC), Mark leads the integration of building science, energy modeling, and systems innovation across residential projects nationwide.

With over 18 years of experience in high-performance housing, Mark has worked at the intersection of architecture, energy efficiency, and code development. He began his career as a site inspector in 2008, later becoming the owner of Building Energy Inc., where he helped shape industry best practices and develop digital tools to streamline energy advisory workflows.

Mark serves on multiple advisory committees and contributes to national discussions on building codes, energy policy, and sustainable housing. He was named Ontario’s Energy Advisor of the Year in 2013 and 2018 for his leadership and technical excellence.

He is driven by a commitment to advancing practical, scalable solutions that improve building performance, resiliency, and environmental outcomes.