DCA provides strategic guidance and support to parishes in human resources, finance, membership, secretariat policies, and church operations, ensuring compliance with both government and diocesan standards. As the central hub for publicity campaigns, we amplify the reach of diocesan and parish initiatives. DCA also provides guidance and oversight on major infrastructural projects, ensuring governance and accountability while supporting parishes in their operations. Through our work, we uphold the mission of the Diocese by fostering excellence in church administration and governance.

The DCA has been organised to support the work of the diocese in the following areas: The Bishop's Office, Corporate Communications, Finance, Human Resource, Information Technology, Membership, Licensing & Compliance, Property, Secretariat, Chinese-speaking work, Education, Missions and Youth.

The DCA team is helmed by the Chief Administrative Officer, Ms Mabel Tan.