AbstractBuilding information modeling (BIM) is a technology and process that creates profound changes in construction methods, directly affecting the optimization of the execution procedure and the methods outlined in construction project contracts. There is a lack of manuals for implementing BIM contracts in most developing countries. This lack of instruction has led to a slow acceptance and implementation of BIM in many developing countries. Previous studies have determined present challenges in relations, roles, and risks of a BIM-focused contract. Thus, this research investigates and determines how these contractual challenges may affect the implementation procedure and, ultimately, the successful execution of the contractual obligations relating to the use of BIM in projects. Accordingly, after a comprehensive literature review and listing the identified challenges, two sets of data collection from construction companies were used to define the effects of BIM contractual challenges. Consequently, data verification of the contractual challenges in these two case projects indicates a rise in BIM success due to its superior handling of project execution compared to how non-BIM projects handle similar challenges.