He is also a longtime Seminole County resident and conservative Republican activist. He has chaired the UCF College Republicans and the Florida Federation of College Republicans. He also headed the student and youth coalitions in Florida for both the John McCain and Mitt Romney presidential campaigns. He formerly served as Secretary and Treasurer of the Seminole County Republican Party from 2012 to 2016. He has been a member of the Lake Mary Planning and Zoning Board since 2014. In 2014, Justin was elected without opposition to the Seminole County Soil and Water Conservation District as a District Supervisor.