James Bong Building

How does James Bong Building compare with other commercial buildings in San Francisco?

The latest disclosures cover 1,683 commercial buildings in San Francisco, out of 2,509 buildings citywide. James Bong Building's ENERGY STAR score of 99 compares with an average of 78 across the 790 that report a score; it scores higher than 86% of them and lower than 10%. Its site EUI of 15.3 kBtu/ft² is about 69% below the average of 49.2 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 68% below the group average of 2.7 kgCO₂e/ft².

At 136,850 sq ft, it is about 27% above the average floor area of 107,408 sq ft for those buildings. It was built in 1908, 33 years earlier than the group's average year built (1941). Across all 24 jurisdictions BuildingCensus covers, the 2,307 commercial buildings average an ENERGY STAR score of 76 and a site EUI of 51.3 kBtu/ft².

How has James Bong Building's energy performance changed over time?

BuildingCensus holds 15 San Francisco disclosures for James Bong Building, covering report years 2011–2025. Its ENERGY STAR score was 99 in both 2011 and 2025. Site EUI moved from 20.7 kBtu/ft² (2011) to 15.3 kBtu/ft² (2025), a 26% decrease. Reported emissions went from 241 tCO₂e to 117 tCO₂e over the same span (down 51%).

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. James Bong Building's 15.3 kBtu/ft² across 136,850 sq ft works out to about 2.1 billion Btu (614 MWh-equivalent) in 2025. Its source EUI of 34.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 410,194 kWh of electricity and 6,986 therms of natural gas for the year.

Which law requires James Bong Building to report its energy use?

James Bong Building 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:3705/037:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.