The ability for post-secondary institutions to create safe and inclusive communities, identify mental health issues early, and provide effective resources and support to all students requires a shift in perspective. This paper employs a human-centred service design approach, and proposes that by looking at the issues of student mental health through the lens of accessibility, campuses across Ontario can better meet the needs of students, support academic success, and positively impact the lives of young people. Combining Service Design methods with Futures and Systems Thinking, this study concludes that by focusing on the issues of mental health accessibility post-secondary institutions can facilitate better access to mental health services for students. This exploratory research positions the issue of campus mental health within the context of accessibility and offers a set of design principles and a road map to change that supports the ongoing work happening at OCAD University.