Purpose. Thermal and economic parameters of power systems in low-rise buildings during their construction and operation. Methodology. Analysis and comparison of thermal and economic parameters of energy systems in low-rise buildings. Research findings. The construction of low-rise buildings instead of individual houses confirms saving of capital construction and power system costs as well as energy savings while in operation. Based on the developed methodology, the capital and operating costs for power systems of an individual residence and a section of blocked houses are calculated. The main indicators for both house options are summarized and the most optimal option is selected. Research applications. These recommendations can be applied in modern housing construction and serve as a basis for new investment and construction projects on low-rise buildings that meet the energy efficiency requirements. Conclusion. Calculations show a 7% heat loss reduction during the construction of blocked houses. The capital cost savings for the construction of the sectional blocked lowrise building amount to 180.574 rubles.