Letterman House Condominiums

How does Letterman House Condominiums 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. Letterman House Condominiums's ENERGY STAR score of 76 compares with an average of 72 across the 1,618 that report a score; it scores higher than 46% of them and lower than 53%. Its site EUI of 65.5 kBtu/ft² is about 28% 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 4.3 kgCO₂e/ft² is about 13% above the group average of 3.8 kgCO₂e/ft².

At 85,691 sq ft, it is about 37% below the average floor area of 136,346 sq ft for those buildings. It was built in 1960, 5 years earlier 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 Letterman House Condominiums's energy performance changed over time?

BuildingCensus holds 7 Washington, DC disclosures for Letterman House Condominiums, covering report years 2018–2024. Its ENERGY STAR score went from 53 in 2018 to 76 in 2024 (+23 points). Site EUI moved from 84.8 kBtu/ft² (2018) to 65.5 kBtu/ft² (2024), a 23% decrease. Reported emissions went from 485 tCO₂e to 369 tCO₂e over the same span (down 24%).

What does an ENERGY STAR score of 76 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 76 means the building performs better than about 76% of its national peers. BuildingCensus bands the score into report-card grades; 76 falls in band B — above median (70–84). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. Letterman House Condominiums's 65.5 kBtu/ft² across 85,691 sq ft works out to about 5.6 billion Btu (1,645 MWh-equivalent) in 2024. Its source EUI of 110.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 597,925 kWh of electricity, 35,769 therms of natural gas and 4,936 thousand gallons of water for the year.

Which law requires Letterman House Condominiums to report its energy use?

Letterman House Condominiums 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:PM14009903:2024). 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.