When concluding contracts for the supply of thermal energy between resource-supplying organizations and utility consumers, disagreements arise regarding the distribution of responsibility for the upkeep and servicing of district heating networks, which further complicates determining the party liable for the consequences of accidents (incidents) on district heating pipeline sections. The article analyzes current trends in judicial practice concerning the establishment of operational responsibility boundaries, as well as existing deficiencies in the regulatory framework. As a result, the conclusion is reached that it is necessary to amend certain provisions of the rules defining the composition of common property of multi-apartment building owners, as well as the procedure for its maintenance.