Post Massachusetts Avenue

How does Post Massachusetts Avenue compare with other multifamily housing buildings in Washington, DC?

The latest disclosures cover 1,799 multifamily housing buildings in Washington, DC, out of 6,870 buildings citywide. Post Massachusetts Avenue's ENERGY STAR score of 34 compares with an average of 72 across the 1,618 that report a score; it scores higher than 9% of them and lower than 90%. Its site EUI of 59.5 kBtu/ft² is about 16% above the average of 51.1 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 4.7 kgCO₂e/ft² is about 22% above the group average of 3.8 kgCO₂e/ft².

At 237,796 sq ft, it is about 74% above the average floor area of 136,346 sq ft for those buildings. It was built in 2002, 37 years later than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².

How has Post Massachusetts Avenue's energy performance changed over time?

BuildingCensus holds 11 Washington, DC disclosures for Post Massachusetts Avenue, covering report years 2014–2024. Its ENERGY STAR score went from 82 in 2014 to 34 in 2024 (-48 points); its best year on file was 2018, at 99. Site EUI moved from 48.4 kBtu/ft² (2014) to 59.5 kBtu/ft² (2024), an 23% increase. Reported emissions went from 1,146 tCO₂e to 1,106 tCO₂e over the same span (down 3%).

What does an ENERGY STAR score of 34 mean?

ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 34 means the building performs better than about 34% of its national peers. BuildingCensus bands the score into report-card grades; 34 falls in band D — lowest band (1–54). It sits 41 points below 75, the threshold for ENERGY STAR certification. In Washington, DC, 47% of scored buildings are at 75 or above.

Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. Post Massachusetts Avenue's 59.5 kBtu/ft² across 237,796 sq ft works out to about 14.1 billion Btu (4,147 MWh-equivalent) in 2024. Its source EUI of 137.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,998,026 kWh of electricity, 39,239 therms of natural gas and 9,784 thousand gallons of water for the year.

Which law requires Post Massachusetts Avenue to report its energy use?

Post Massachusetts Avenue reports under the Clean and Affordable Energy Act / BEPS, the legal basis of Washington, DC's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record dc:PM3883929:2024). DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.