The paper presents the characteristics of the risks in the formation of residential clusters in a megalopolis. The main goal of the model of clusters of integrated urban development is the high efficiency of its functioning and implementation. Such a development model allows simultaneously realizing many goals: economic, social, technological, and also allows monitoring various construction parameters and controlling them at all stages of construction production. The paper gives a definition of risks in construction, a classification of the risks of cluster formation, and also provides methods for their assessment and control. In addition to theoretical data, the paper provides examples of situations both in Russia and abroad.