The article is devoted to the study of the institutional structure of the social capital of the city of Sevastopol on the basis of assessing the perception by real actors of the level of satisfaction with life in the city. The relevance of the topic is due to the importance of forming an effective institutional structure of social capital in ensuring the implementation of social programs to improve the quality of life of the population. The study was carried out using the methods of system analysis, institutional approach, methods of economic comparative studies, structural-logical approach. In the course of the research, the following results were obtained: 1) in the structure of the city's social capital, such a component as "social networks and communications" is poorly developed at the subject level, which affects the deepening of information asymmetry processes in terms of the perception of social reforms by citizens; 2) the transformation of the structure of social capital of the city of Sevastopol should be based on the humanitarian and technological paradigm of the development of modern society.