Mark has a diverse background in building, design and construction. He has worked as a carpenter, as a pipe welder, as a structural research engineer, as a home designer, and a building contractor. He has been building for 20 years. Mark has a Professional Engineering (PE) license in civil/structural engineering. Mark’s passion for building and design has led him to focus his skills on the founding and running of the design-build company AMEND. AMEND's focus is on building homes that are comfortable for their occupants using best energy efficiency, sustainability, building science, indoor air quality and material selection processes.