Seattle Waterfront Marriott

How does Seattle Waterfront Marriott compare with other hotel buildings in Seattle?

The latest disclosures cover 86 hotel buildings in Seattle, out of 3,871 buildings citywide. Seattle Waterfront Marriott's ENERGY STAR score of 49 compares with an average of 76 across the 78 that report a score; it scores higher than 12% of them and lower than 87%. Its site EUI of 92.7 kBtu/ft² is about 36% above the average of 68.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 2.7 kgCO₂e/ft² is about 35% above the group average of 2.0 kgCO₂e/ft².

At 293,030 sq ft, it is about 77% above the average floor area of 165,912 sq ft for those buildings. It was built in 2003, 33 years later than the group's average year built (1971). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².

How has Seattle Waterfront Marriott's energy performance changed over time?

BuildingCensus holds 11 Seattle disclosures for Seattle Waterfront Marriott, covering report years 2015–2025. Its ENERGY STAR score went from 23 in 2015 to 49 in 2025 (+26 points); its best year on file was 2020, at 84. Site EUI moved from 100.3 kBtu/ft² (2015) to 92.7 kBtu/ft² (2025), a 8% decrease. Reported emissions went from 780 tCO₂e to 687 tCO₂e over the same span (down 12%).

What does an ENERGY STAR score of 49 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 49 means the building performs better than about 49% of its national peers. BuildingCensus bands the score into report-card grades; 49 falls in band D — lowest band (1–54). It sits 26 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. Seattle Waterfront Marriott's 92.7 kBtu/ft² across 293,030 sq ft works out to about 27.2 billion Btu (7,961 MWh-equivalent) in 2025. Its source EUI of 179.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,485,302 kWh of electricity and 116,895 therms of natural gas for the year.

Which law requires Seattle Waterfront Marriott to report its energy use?

Seattle Waterfront Marriott 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:316:2025). 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.