Large farm buildings don’t fit neatly into conventional building categories—and the Ontario Building Code recognizes that. This presentation explores how OBC Part 2 provides designers with flexibility for agricultural structures, allowing practical, cost effective alternatives to standard Part 3 requirements. We dive into the real world structural challenges of long spans, increased environmental loads, foundations, and durability, while highlighting key architectural considerations such as safe access, design conformance, and accommodating modern farm operations. Through case studies, we show how performance based solutions, smart coordination, and proactive collaboration with Authorities Having Jurisdiction turn code intent into buildable, economical designs that work for farmers and regulators alike.