The Brittany Apartments

How does The Brittany Apartments 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. The Brittany Apartments's ENERGY STAR score of 69 compares with an average of 72 across the 1,618 that report a score; it scores higher than 36% of them and lower than 63%. Its site EUI of 59.0 kBtu/ft² is about 15% 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 3.9 kgCO₂e/ft² is roughly in line with the group average of 3.8 kgCO₂e/ft².

At 71,469 sq ft, it is about half of the average floor area of 136,346 sq ft for those buildings. Its 1963 construction date is close to 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 The Brittany Apartments's energy performance changed over time?

BuildingCensus holds 12 Washington, DC disclosures for The Brittany Apartments, covering report years 2013–2024. Its ENERGY STAR score went from 61 in 2014 to 69 in 2024 (+8 points). Site EUI moved from 65.4 kBtu/ft² (2013) to 59.0 kBtu/ft² (2024), a 10% decrease. Reported emissions went from 362 tCO₂e to 280 tCO₂e over the same span (down 23%).

What does an ENERGY STAR score of 69 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 69 means the building performs better than about 69% of its national peers. BuildingCensus bands the score into report-card grades; 69 falls in band C — below median (55–69). It sits 6 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. The Brittany Apartments's 59.0 kBtu/ft² across 71,469 sq ft works out to about 4.2 billion Btu (1,236 MWh-equivalent) in 2024. Its source EUI of 99.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 452,977 kWh of electricity, 26,009 therms of natural gas and 1,943 thousand gallons of water for the year.

Which law requires The Brittany Apartments to report its energy use?

The Brittany Apartments 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:PM3982177:2024). 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.