Introduction. The effectiveness of investments in antiseismic reinforcement of a building is largely determined by seismic risk, while social risk accounting is an important part of seismic hazard assessment and is subject to serious analysis.

Aim. The article provides an assessment of the seismic risk and economic efficiency of anti-seismic strengthening of residential buildings taking into account human losses and situational seismicity at the construction site.

Materials and methods. The risk assessment methodology proposed by L.V. Kantorovich was used to conduct the research. The risk assessment was performed using known in the literature payoff matrices and data on the recurrence of earthquakes in regions with different situational seismicity. The study developed a method for assessing human losses based on the economic characteristics of residential development.

Results. The ratio of social and commercial seismic risk was estimated. In the conditions of the Russian Federation, social risk is about 5-10% of the economic risk. It is shown that the required degree of strengthening of buildings and structures for the conditions of the Russian Federation is largely determined by economic losses.

Concusions. With an increase in insurance payments for loss of life to 50 million rubles, social losses begin to determine the degree of anti-seismic strengthening.