Public universities’ budget constraint faces various challenges in maintaining their building facilities. A cost management solution in based on life-cycle cost through activity-based could provide the systematic approach in organizing, monitoring and analyzing process of facilities' maintenance costs. The aim of this paper is to determine the important facilities’ maintenance activities that should be included in an activity-based life-cycle cost process of public university building maintenance. Descriptive analysis is conducted in determining the important and non-important facilities' maintenance activities. By prioritizing activities through value added and non-value added maintenance activities, cost can be managed and controlled effectively.