Westlake Terry - East Bldg

How does Westlake Terry - East Bldg compare with other office buildings in Seattle?

The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Westlake Terry - East Bldg's ENERGY STAR score of 94 compares with an average of 76 across the 378 that report a score; it scores higher than 81% of them and lower than 16%. Its site EUI of 40.5 kBtu/ft² is roughly in line with the average of 44.8 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.3 kgCO₂e/ft² is about half of the group average of 0.7 kgCO₂e/ft².

At 209,816 sq ft, it is roughly in line with the average floor area of 196,452 sq ft for those buildings. It was built in 2006, 41 years later than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².

How has Westlake Terry - East Bldg's energy performance changed over time?

BuildingCensus holds 11 Seattle disclosures for Westlake Terry - East Bldg, covering report years 2015–2025. Its ENERGY STAR score went from 95 in 2015 to 94 in 2025 (-1 points); its best year on file was 2016, at 97. Site EUI moved from 54.4 kBtu/ft² (2015) to 40.5 kBtu/ft² (2025), a 26% decrease. Reported emissions went from 121 tCO₂e to 45 tCO₂e over the same span (down 63%).

What does an ENERGY STAR score of 94 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 94 means the building performs better than about 94% of its national peers. BuildingCensus bands the score into report-card grades; 94 falls in band A — high performer (85–100). 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 Seattle, 69% 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. Westlake Terry - East Bldg's 40.5 kBtu/ft² across 209,816 sq ft works out to about 8.5 billion Btu (2,490 MWh-equivalent) in 2025. Its source EUI of 109.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,529,464 kWh of electricity and 2,770 therms of natural gas for the year.

Which law requires Westlake Terry - East Bldg to report its energy use?

Westlake Terry - East Bldg reports under the Seattle Energy Benchmarking Ordinance (SMC 22.920), the legal basis of Seattle's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record seattle:481:2025). Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.