An investigation of architecturally significant buildings constructed within the last fifty years, in the Midwest and the application of preservation theories to these significant buildings, to aid in evaluation strategies and preservation implementation.Recognition of recent past construction as candidates for architecturally significant cultural resources and the application of preservation theories to these buildings make for good design and preservation practice. Part of our responsibility, as preservation professionals is to promote the preservation of significant structures, regardless of the date of construction. Since there is no established process to aid in preserving recently constructed buildings of architectural significance, it is necessary to develop strategies to assist in the evaluation process.