401 ANZA ST

How does 401 ANZA ST compare with other mixed residential buildings in San Francisco?

The latest disclosures cover 610 mixed residential buildings in San Francisco, out of 2,509 buildings citywide. 401 ANZA ST's ENERGY STAR score of 49 compares with an average of 85 across the 340 that report a score; it scores higher than 9% of them and lower than 90%. Its site EUI of 44.9 kBtu/ft² is about 25% above the average of 36.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 2.6 kgCO₂e/ft² is about 28% above the group average of 2.0 kgCO₂e/ft².

At 88,326 sq ft, it is about half of the average floor area of 165,572 sq ft for those buildings.

How has 401 ANZA ST's energy performance changed over time?

BuildingCensus holds 8 San Francisco disclosures for 401 ANZA ST, covering report years 2018–2025. Its ENERGY STAR score went from 39 in 2022 to 49 in 2025 (+10 points). Site EUI moved from 47.8 kBtu/ft² (2022) to 44.9 kBtu/ft² (2025), a 6% decrease. Reported emissions went from 289 tCO₂e to 227 tCO₂e over the same span (down 22%).

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 San Francisco, 73% 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. 401 ANZA ST's 44.9 kBtu/ft² across 88,326 sq ft works out to about 4 billion Btu (1,162 MWh-equivalent) in 2025. Its source EUI of 125.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,162,609 kWh of electricity for the year.

Which law requires 401 ANZA ST to report its energy use?

401 ANZA ST reports under SF Environment Code Chapter 20, the legal basis of San Francisco's Existing Buildings Energy Performance Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record sf:1107/008:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.