The report presents the results of an additional analysis of data from EPA's 1984 asbestos in buildings national survey. The original survey report was entitled 'Asbestos in Buildings: A National Survey of Asbestos-Containing Friable Materials,' EPA Report No. 560/5-84-006. This additional analysis was undertaken to support EPA's ongoing asbestos in buildings program. In addition to estimates provided in the original report, the additional analysis provides estimates of the number of buildings and total floor area of buildings with (a) any asbestos containing friable material (ACFM), (b) any damaged ACFM, and (c) any significantly damaged ACFM. These estimates are broken down into categories by type of ACFM, type of building, and height of building. Although condition and location of ACFM do not necessarily imply exposure to airborne asbestos, they are believed to be associated with airborne asbestos exposure. The original survey reported that 20% of public and commercial buildings covered by the survey contain ACFM (733,000 out of 3.6 million buildings).