Northaven Senior Living

How does Northaven Senior Living 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. Northaven Senior Living's ENERGY STAR score of 24 compares with an average of 72 across the 40 that report a score; it scores higher than 8% of them and lower than 90%. Its site EUI of 52.1 kBtu/ft² is about 22% 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 0.8 kgCO₂e/ft² is about half of the group average of 1.7 kgCO₂e/ft².

At 124,904 sq ft, it is roughly in line with the average floor area of 136,458 sq ft for those buildings. It was built in 1972, 19 years earlier 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 Northaven Senior Living's energy performance changed over time?

BuildingCensus holds 11 Seattle disclosures for Northaven Senior Living, covering report years 2015–2025. Its ENERGY STAR score went from 12 in 2015 to 24 in 2025 (+12 points). Site EUI moved from 53.6 kBtu/ft² (2015) to 52.1 kBtu/ft² (2025), a 3% decrease. Reported emissions went from 124 tCO₂e to 107 tCO₂e over the same span (down 14%).

What does an ENERGY STAR score of 24 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 24 means the building performs better than about 24% of its national peers. BuildingCensus bands the score into report-card grades; 24 falls in band D — lowest band (1–54). It sits 51 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. Northaven Senior Living's 52.1 kBtu/ft² across 124,904 sq ft works out to about 6.5 billion Btu (1,907 MWh-equivalent) in 2025. Its source EUI of 124.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,459,879 kWh of electricity and 15,261 therms of natural gas for the year.

Which law requires Northaven Senior Living to report its energy use?

Northaven Senior Living 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:23025:2025). 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.