MOSSO SF

How does MOSSO SF compare with other multifamily buildings in San Francisco?

The latest disclosures cover 192 multifamily buildings in San Francisco, out of 2,509 buildings citywide. MOSSO SF's ENERGY STAR score of 97 compares with an average of 86 across the 129 that report a score; it scores higher than 58% of them and lower than 36%. Its site EUI of 34.0 kBtu/ft² is roughly in line with 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 1.9 kgCO₂e/ft² is roughly in line with the group average of 1.9 kgCO₂e/ft².

At 384,327 sq ft, it is about twice the average floor area of 191,699 sq ft for those buildings. It was built in 2012, 26 years later 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 MOSSO SF's energy performance changed over time?

BuildingCensus holds 8 San Francisco disclosures for MOSSO SF, covering report years 2018–2025. Its ENERGY STAR score went from 46 in 2018 to 97 in 2025 (+51 points); its best year on file was 2024, at 97. Site EUI moved from 60.2 kBtu/ft² (2018) to 34.0 kBtu/ft² (2025), a 44% decrease. Reported emissions went from 650 tCO₂e to 600 tCO₂e over the same span (down 8%).

What does an ENERGY STAR score of 97 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 97 means the building performs better than about 97% of its national peers. BuildingCensus bands the score into report-card grades; 97 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. MOSSO SF's 34.0 kBtu/ft² across 384,327 sq ft works out to about 13.1 billion Btu (3,830 MWh-equivalent) in 2025. Its source EUI of 57.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,184,495 kWh of electricity and 69,465 therms of natural gas for the year.

Which law requires MOSSO SF to report its energy use?

MOSSO SF 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:3732/272:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.