Gwilym Still is a Passivhaus Designer, Passivhaus Certifier, and MEP Consultant, with over 17 years of construction experience. He leads Max Fordham’s Passivhaus service and teaches on the industry-leading Coaction training course for Passivhaus designers. He's a member of the Passivhaus Trust technical steering group, and educational steering group. Gwilym has worked on new-build and retrofit projects from small to large, through all stages of design, construction, and post-occupancy evaluation. His portfolio covers schools, large and small residential projects, offices, and higher education buildings.