Apartment Utility Data: What Owners Need Before a Comparison

Apartment utility data starts with a clear map of which meters cover the property, the units, and shared spaces. Before comparing two buildings or pursuing an ENERGY STAR score, confirm which energy use the records include and which periods are missing.

EPA says an ENERGY STAR score for multifamily housing requires an eligible property type, at least 20 units, the required property use details, and complete energy data for all fuel types across all active meters for 12 full consecutive months. Portfolio Manager also lets owners track use over time for properties outside score eligibility.

Use this checklist for each building

• List every electricity, gas, steam, or other energy meter and the area it serves.
• Separate owner accounts, common area meters, resident-controlled accounts, and any aggregated whole building data.
• Record meter ID, unit of measure, utility, account source, and the billing period start and end dates.
• Mark missing months, estimated reads, new meters, and meters removed from service.
• Confirm the current property area and use details before comparing energy intensity.

Keep resident-paid use visible as a data gap when it cannot be obtained. A common area total is not whole building consumption. Ask the utility whether it offers aggregate data for multifamily benchmarking. ENERGY STAR's utility map shows where that service may be available and the access conditions to check.

Make building comparisons fair

Compare periods that cover the same months. Keep the same meter boundary and fuel types in each comparison. If one building has all unit use and another has only common area use, label the difference before ranking or drawing a conclusion.

For an ENERGY STAR score, check the current eligibility rules directly. A score compares an eligible building with a defined peer group. It does not explain why a building's use changed or prove that a manager reduced consumption.

Turn a data issue into an owner question

If a bill is missing, ask who can obtain it. If a meter moved or was replaced, ask for the effective date and revised mapping. If a total changed, check dates, unit conversion, occupancy, and shared spaces before treating it as a performance change.

Put the remaining gaps in the monthly owner report with a responsible person and next checkpoint. Coastline's multifamily management guide explains the broader reporting and maintenance questions to review. If the utility history and operating report do not line up, Request a Property Management Performance Review.

Show what the owner can compare today

A property may have good owner-paid common-area bills and no reliable data for apartment use. In that case, report the common-area trend as its own measure. If whole-building data later becomes available, start a separate comparison with the full meter boundary. Keep the earlier numbers labeled so they are not mistaken for the complete property.

Ask the manager to give each data gap a next step: request aggregate data from the utility, obtain a missing bill, reconcile a meter replacement, or verify property-use details. The owner should see the open item, who is responsible, and the next date. Those answers are more useful than a single score with unexplained inputs.

A practical check is to pick one recent month and trace every included account back to its bill and service area. If the team cannot do that, resolve the meter map before comparing buildings.

Sources

• ENERGY STAR Score Eligibility Criteria
• ENERGY STAR Utility Data Map
• ENERGY STAR Portfolio Manager Benchmarking