Calibrated Building Energy Modeling (CBEM) was applied to determine monthly energy bill allocations for a non-metered residential community. The calibration was performed using community level utility bills, real weather data, building survey data, and occupant behavior. The procedures can be applied to other buildings and occupant profiles. The results can be translated into algorithms in the form of an easy to use computer tool. Additionally, the monthly utility bill allotments can be calculated each month based on real weather for tenant review and instant behavior education.