摘要:This article deals with the assessment of partial risks in construction projects. Partial risks compromise the quality of the construction during preparation, implementation and use. They are the cause of defects associated with individual parts of construction and supply. These risks are also a source of increased repair costs. We need to identify partial risks and suppress them at all stages of the construction project to improve quality and reduce construction costs. The article defines the sub-risk and its impact on the complexity of buildings. It deals with the methodology of evaluation and use of analytical results for the prevention of building defects. The article also presents the benefits of applying the sub-risk assessment and the resulting preventive measures.