Bldg C Nw Corp Park

How does Bldg C Nw Corp Park compare with other non-refrigerated warehouse buildings in Seattle?

The latest disclosures cover 164 non-refrigerated warehouse buildings in Seattle, out of 3,871 buildings citywide. Bldg C Nw Corp Park's ENERGY STAR score of 72 compares with an average of 58 across the 117 that report a score; it scores higher than 58% of them and lower than 40%. Its site EUI of 29.4 kBtu/ft² is roughly in line with the average of 30.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.1 kgCO₂e/ft² is about 28% above the group average of 0.9 kgCO₂e/ft².

At 115,620 sq ft, it is about twice the average floor area of 58,727 sq ft for those buildings. It was built in 1966, 6 years later than the group's average year built (1960). Across all 24 jurisdictions BuildingCensus covers, the 4,723 non-refrigerated warehouse buildings average an ENERGY STAR score of 66 and a site EUI of 26.0 kBtu/ft².

How has Bldg C Nw Corp Park's energy performance changed over time?

BuildingCensus holds 11 Seattle disclosures for Bldg C Nw Corp Park, covering report years 2015–2025. Its ENERGY STAR score went from 14 in 2015 to 72 in 2025 (+58 points); its best year on file was 2022, at 77. Site EUI moved from 31.6 kBtu/ft² (2015) to 29.4 kBtu/ft² (2025), a 7% decrease. Reported emissions went from 10 tCO₂e to 121 tCO₂e over the same span (up 1064%).

What does an ENERGY STAR score of 72 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 72 means the building performs better than about 72% of its national peers. BuildingCensus bands the score into report-card grades; 72 falls in band B — above median (70–84). It sits 3 points below 75, the threshold for ENERGY STAR certification. 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. Bldg C Nw Corp Park's 29.4 kBtu/ft² across 115,620 sq ft works out to about 3.4 billion Btu (996 MWh-equivalent) in 2025. Its source EUI of 44.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 239,472 kWh of electricity and 22,630 therms of natural gas for the year.

Which law requires Bldg C Nw Corp Park to report its energy use?

Bldg C Nw Corp Park 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:794:2025). 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.