Construction production in Russia and abroad (in Iraq) is facing various negative factors. The emergence of diverse factors in the implementation of investment and construction projects has an effect on the making of important decisions by the heads of construction enterprises, which may in the future be the cause of uncertainty and, as a result, the emergence of critical risks. The purpose of the study is to develop a methodology for identifying and assessing the influence of risk factors on the activities of construction enterprises in the implementation of investment projects. For the purposes of the study, mathematical and statistical models were used, such as the hierarchical analysis method and Monte Carlo, as well as the expert survey. The result of the study shows that the use of those models will significantly increase the success of construction enterprises by identifying various risk factors at the stage of construction and assessing their impact on these projects. The scientific and methodological approaches developed as a result of the study, methods for assessing risk factors, and appropriate compensatory measures to reduce or prevent the influence of these factors will significantly improve the organization of production activities of construction enterprises and will contribute to their successful development.