Generalized real estate market value was evaluated by the Surveying and Mapping Authority of the Republic of Slovenia in 2010. Evaluations were made for all real estate in Slovenia, and communicated to the real estate owners; this caused much controversy later, owners corrected or changed 1,153,909 pieces of real estate data. The distrust of generalized real estate market value was intensified by the media's negative attitude towards it, expressed in the majority of articles. When the period for making changes and corrigenda expired, an impression was established of a satisfactory and precise valuation of real estate. Even the banks started using generalized real estate market value, as referential information in smaller real estate transactions for the banks' mortgage lending needs. Nevertheless, the professional public has expressed concerns about the appropriateness of using generalized market value for purposes other than imposing taxes, since some specific characteristics of real estate are ignored. This article discusses perceptions of generalized market value.