The Administrative Campus Center (ACC) houses the majority of TCCS's services and personnel, including:
- Benefits Administration
- Central Facilities Services
- Environmental Health and Safety
- Executive Office
- Financial Services
- Human Resources
- Information Technology (TCCS)
- TCC IT (consortial)
- Real Estate and Housing
In addition, the ACC includes the Executive Conference Center which was designed to provide flexible and comfortable spaces – from conference rooms to stadium-style seating to tented outdoor spaces – for a wide variety of student, faculty and staff interactions at the colleges. While primarily focused on supporting the educational and business needs of member colleges, the ACC Executive Conference Center also was designed to be a resource for additional educational, cultural and civic engagement activities by providing the Claremont community with meeting spaces, technology support, and food and catering options.