I have heard it asserted that the reason for poor construction quality of postwar US commercial buildings in their 39-year depreciation life: http://yourbusines

I have heard it asserted that the reason for poor construction quality of postwar US commercial buildings in their 39-year depreciation life: http://yourbusiness.azcentral.com/irs-depreciation-schedule-commercial-real-estate-15798.html http://yourbusiness.azcentral.com/irs-depreciation-schedule-... Hence the lack of much brick or stone, built-for-the-ages construction beyond veneers.