This report presents the concept of ‘Dynamic Heating Accounts' in the context of social housing in Denmark.The Danish National Building Foundation has funded a project to test whether and how Dynamic Heating Accounts can be used in social housing. As part of the project, the Foundation wish to share the preliminary results with California Environmental Protection Agency, CalEPA.The report covers the principle behind, a thorough description of the methods for defining the specifications for temperature, relative humidity and CO2, as well as the framework for dividing the heating costs among the apartments.