AbstractOne of the most important parts of a project management is the quality management. While it is absolutely necessary to conduct a thorough research on the maturity of quality management in construction companies, especially contractors so that construction companies know at what level of their company quality, this has an effect on building customer perceptions of their companies and the business of the company itself to continue to grow to be able to reach the highest maturity level. This paper aims to propose an assessment model of contractor quality management maturity (