Sanford Hildebrandt Towers I

How does Sanford Hildebrandt Towers I compare with other multifamily housing buildings in Seattle?

The latest disclosures cover 1,971 multifamily housing buildings in Seattle, out of 3,871 buildings citywide. Sanford Hildebrandt Towers I's ENERGY STAR score of 87 compares with an average of 83 across the 1,652 that report a score; it scores higher than 41% of them and lower than 57%. Its site EUI of 60.1 kBtu/ft² is about 72% above the average of 34.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 2.2 kgCO₂e/ft² is about 210% above the group average of 0.7 kgCO₂e/ft².

At 183,392 sq ft, it is about twice the average floor area of 86,468 sq ft for those buildings. It was built in 1964, 19 years earlier than the group's average year built (1983). 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 Sanford Hildebrandt Towers I's energy performance changed over time?

BuildingCensus holds 11 Seattle disclosures for Sanford Hildebrandt Towers I, covering report years 2015–2025. Its ENERGY STAR score went from 36 in 2015 to 87 in 2025 (+51 points); its best year on file was 2023, at 92. Site EUI moved from 81.0 kBtu/ft² (2015) to 60.1 kBtu/ft² (2025), a 26% decrease. Reported emissions went from 498 tCO₂e to 398 tCO₂e over the same span (down 20%).

What does an ENERGY STAR score of 87 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 87 means the building performs better than about 87% of its national peers. BuildingCensus bands the score into report-card grades; 87 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. Sanford Hildebrandt Towers I's 60.1 kBtu/ft² across 183,392 sq ft works out to about 11 billion Btu (3,230 MWh-equivalent) in 2025. Its source EUI of 100.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,142,482 kWh of electricity and 71,294 therms of natural gas for the year.

Which law requires Sanford Hildebrandt Towers I to report its energy use?

Sanford Hildebrandt Towers I 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:21229:2025). 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.