Results of eventological [1] modeling of housing and communal services system [2, 3, 4, 5, 6, 7, 8] are looked at in examples and illustrations, which are intended to demonstrate the main features of the evaluation of activities under the circumstances of the event on the basis of a portfolio of identification features of housing and communal services; in addition, these examples and illustrations show the role and functions in the risk assessment of the three main event-related figures involved in the eventological system of housing and communal services: the total subject, the total object and the total barrier, and, most importantly, discover the key applicability of the eventological approach in the field of housing and communal services in the methods of selecting the optimal portfolio of identification features of housing and communal services, providing a given accuracy of efficiency assessment in the settlement at a given minimum expert costs.