Hotel Diller

How does Hotel Diller compare with other retail store buildings in Seattle?

The latest disclosures cover 68 retail store buildings in Seattle, out of 3,871 buildings citywide. Hotel Diller's ENERGY STAR score of 95 compares with an average of 73 across the 50 that report a score; it scores higher than 68% of them and lower than 24%. Its site EUI of 28.8 kBtu/ft² is about 37% below the average of 45.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.6 kgCO₂e/ft² is about half of the group average of 1.1 kgCO₂e/ft².

At 34,680 sq ft, it is about half of the average floor area of 70,593 sq ft for those buildings. It was built in 1900, 63 years earlier than the group's average year built (1963). Across all 24 jurisdictions BuildingCensus covers, the 3,025 retail store buildings average an ENERGY STAR score of 73 and a site EUI of 57.7 kBtu/ft².

How has Hotel Diller's energy performance changed over time?

BuildingCensus holds 11 Seattle disclosures for Hotel Diller, covering report years 2015–2025. Its ENERGY STAR score went from 92 in 2015 to 95 in 2025 (+3 points). Site EUI moved from 34.6 kBtu/ft² (2015) to 28.8 kBtu/ft² (2025), a 17% decrease. Reported emissions went from 27 tCO₂e to 19 tCO₂e over the same span (down 28%).

What does an ENERGY STAR score of 95 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 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 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. Hotel Diller's 28.8 kBtu/ft² across 34,680 sq ft works out to about 1 billion Btu (293 MWh-equivalent) in 2025. Its source EUI of 66.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 207,800 kWh of electricity and 2,904 therms of natural gas for the year.

Which law requires Hotel Diller to report its energy use?

Hotel Diller 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:21310:2025). 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.