The article is devoted to the development of a hybrid approach to modeling inventory management processes. Typical features of inventory management in conditions of variable demand, seasonality and uncertainty of supplies typical for the construction industry are considered. As part of the study, the current state of warehouse and logistics processes was described and typical BPMN diagrams were constructed that reflect the full cycle of material movement: from demand generation and procurement to acceptance, storage and transfer of materials to construction sites. Based on this process approach, it is proposed to create a hybrid simulation model combining discrete event modeling and elements of system dynamics, which will allow taking into account seasonal fluctuations in demand, changes in supply conditions and other external factors. The results of the study are the basis for developing a model of the target state of processes aimed at reducing the risks of shortage and excessive accumulation of materials, as well as improving the efficiency of warehouse and logistics processes. The proposed approach is focused on the formation of a sustainable inventory management system that ensures the reduction of excessive accumulation of materials, reduction of losses and rational use of resources. The use of a hybrid simulation model will allow taking into account both long-term trends in demand and operating conditions of the system, as well as operational features of warehouse processes, which will increase the stability and adaptability of inventory management.