S.C. Code § 1-11-67
The Department of Administration shall assess and collect a rental charge from all state departments and agencies that occupy space in state-controlled office buildings under its jurisdiction. The amount charged each department or agency must be calculated on a square foot, or other equitable basis of measurement, and at rates that will yield sufficient total annual revenue to cover the annual principal and interest due or anticipated on the Capital Improvement Obligations for projects administered or planned by the department, and maintenance and operation costs of department-controlled office buildings. The amount collected must be deposited in a special account and must be expended only for payment on Capital Improvement Obligations and maintenance and operations costs of the buildings under the supervision of the department.
All departments and agencies against which rental charges are assessed and whose operations are financed in whole or in part by federal or other nonappropriated funds are both directed to apportion the payment of these charges equitably among all funds to ensure that each bears its proportionate share.
S.C. Code § 1-11-67