Aljoya Thornton Place

How does Aljoya Thornton Place compare with other senior living community buildings in Seattle?

The latest disclosures cover 48 senior living community buildings in Seattle, out of 3,871 buildings citywide. Aljoya Thornton Place's ENERGY STAR score of 93 compares with an average of 72 across the 40 that report a score; it scores higher than 65% of them and lower than 30%. Its site EUI of 39.6 kBtu/ft² is about 41% below the average of 66.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.9 kgCO₂e/ft² is about half of the group average of 1.7 kgCO₂e/ft².

At 244,500 sq ft, it is about 79% above the average floor area of 136,458 sq ft for those buildings. It was built in 2009, 18 years later than the group's average year built (1991). Across all 24 jurisdictions BuildingCensus covers, the 1,181 senior living community buildings average an ENERGY STAR score of 71 and a site EUI of 73.6 kBtu/ft².

How has Aljoya Thornton Place's energy performance changed over time?

BuildingCensus holds 11 Seattle disclosures for Aljoya Thornton Place, covering report years 2015–2025. Its ENERGY STAR score went from 99 in 2015 to 93 in 2025 (-6 points); its best year on file was 2016, at 100. Site EUI moved from 48.2 kBtu/ft² (2015) to 39.6 kBtu/ft² (2025), a 18% decrease. Reported emissions went from 304 tCO₂e to 221 tCO₂e over the same span (down 27%).

What does an ENERGY STAR score of 93 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 93 means the building performs better than about 93% of its national peers. BuildingCensus bands the score into report-card grades; 93 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. Aljoya Thornton Place's 39.6 kBtu/ft² across 244,500 sq ft works out to about 9.7 billion Btu (2,838 MWh-equivalent) in 2025. Its source EUI of 85.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,807,937 kWh of electricity and 35,099 therms of natural gas for the year.

Which law requires Aljoya Thornton Place to report its energy use?

Aljoya Thornton Place 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:24769:2025). 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.