Steve Hessler, co-founder of Holzraum System, is a heavy timber structural designer, project manager and PHIUS+ certified passive house consultant with over 20 years of experience designing, building and managing structural-thermal envelope offsite fabrication projects as well as on-site high performance construction projects. Since 2008 Steve has been combining 3D modeling, integrated project delivery and building science principals to design and manage off-the-grid, net-zero, and passive house projects. Steve graduated from Pennsylvania State University.