BIM has been claimed to be a revolution for the construction industry and contractors are sure about the value that BIM use brings even though no one has been able to prove them. Multiple studies have been made by academics trying to create methods to either quantify or identify the value with BIM, however none of these methods are being used in practice. The purpose of this study is to increase the understanding of how contractors assess the value of BIM and the reasoning behind their assessments. This is done through nine semi structured interviews with respondents from three big sized contractors in Sweden. The data from the interviews was coded and thematically analyzed. It was concluded that depending on the respondents´ perception of BIM, the value of BIM was seen as different and subsequently both the performed and aspired assessment processes. Based on that, a matrix was created, outlining the two perceptions: BIM as part of something bigger i.e. BIM as a prerequisite or BIM as a mean in of itself. Furthermore, the matrix displays four dimensions of BIM assessment: the tangibility focus, the structured approach, the intangibility focus and lastly, the non-action approach.