Abstract: To implement BIM in a construction project successfully, all the project participants as BIM users must have minimum BIM capabilities. Before any project starts, assessing BIM capabilities of project stakeholders is a concern for construction clients. The main problem of public clients regarding BIM is that they have no mechanism to ensure that the key participants, they hire for a BIM project, have the minimum capabilities (i.e. BIM Infrastructure, processes and qualified resources) to participate in design and delivery of the project. The high variability of firms' readiness to work with BIM may impose a high cost for the client and other mature members of the supply chain. Therefore, construction clients need a way to ensure minimum BIM maturity of participants, such as a maturity audit to assess BIM competency of potential project team members. From a client's perspective, "minimum BIM qualification" means "minimum capability to use BIM". The current BIM maturity models try to assess BIM capabilities level of firms, but lack BIM uses assessment. This research proposes a prototype that focuses on capability of firms in specific BIM uses, while measuring their general BIM capabilities. The research methodology is based on an iterative literature review followed by focus group discussions. Through literature review, the researchers propose BIM platform maturity model. Then, BIM experts discuss on possible improvements. It is expected that by using this model, construction clients may achieve more BIM benefits, i.e. reduced cost, time, and increased quality of project, through selection of BIM-qualified project team members
