973 MARKET ST

How does 973 MARKET ST compare with other multifamily buildings in San Francisco?

The latest disclosures cover 192 multifamily buildings in San Francisco, out of 2,509 buildings citywide. 973 MARKET ST's ENERGY STAR score of 99 compares with an average of 86 across the 129 that report a score; it scores higher than 71% of them and lower than 22%. Its site EUI of 15.5 kBtu/ft² is about 56% below the average of 34.9 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 1.9 kgCO₂e/ft².

At 81,541 sq ft, it is about 57% below the average floor area of 191,699 sq ft for those buildings. It was built in 1908, 78 years earlier than the group's average year built (1986). Across all 24 jurisdictions BuildingCensus covers, the 238 multifamily buildings average an ENERGY STAR score of 86 and a site EUI of 34.8 kBtu/ft².

How has 973 MARKET ST's energy performance changed over time?

BuildingCensus holds 8 San Francisco disclosures for 973 MARKET ST, covering report years 2018–2025. Its ENERGY STAR score went from 48 in 2018 to 99 in 2025 (+51 points); its best year on file was 2024, at 100. Site EUI moved from 49.7 kBtu/ft² (2018) to 15.5 kBtu/ft² (2025), a 69% decrease. Reported emissions went from 185 tCO₂e to 72 tCO₂e over the same span (down 61%).

What does an ENERGY STAR score of 99 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 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 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 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. 973 MARKET ST's 15.5 kBtu/ft² across 81,541 sq ft works out to about 1.3 billion Btu (370 MWh-equivalent) in 2025. Its source EUI of 40.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 328,591 kWh of electricity and 1,440 therms of natural gas for the year.

Which law requires 973 MARKET ST to report its energy use?

973 MARKET 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:3704/069:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.