Our experience with Life Cycle Cost Analysis is generally based on analysis of selected aspects of a project: evaluation, restoration, and maintenance costs for historic fabric (i.e. doors, windows, plaster) versus replacement. Replacement of components is often less expensive than repair. Adding insulation or double pane windows may destroy historic fabric. Still, analysis and comparison of energy consumption and usability is essential to making informed decisions. Cost saving measures should be weighed against maintenance and replacement costs. Materials should be selected based on life expectancy.