50 CHURCH ST

How does 50 CHURCH 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. 50 CHURCH ST's ENERGY STAR score of 44 compares with an average of 85 across the 340 that report a score; it scores higher than 9% of them and lower than 91%. Its site EUI of 73.5 kBtu/ft² is about twice 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 3.9 kgCO₂e/ft² is about twice the group average of 2.0 kgCO₂e/ft².

At 61,414 sq ft, it is about 63% below the average floor area of 165,572 sq ft for those buildings. It was built in 1905, 61 years earlier than the group's average year built (1967).

How has 50 CHURCH ST's energy performance changed over time?

BuildingCensus holds 8 San Francisco disclosures for 50 CHURCH ST, covering report years 2018–2025. Its ENERGY STAR score went from 88 in 2022 to 44 in 2025 (-44 points); its best year on file was 2022, at 88. Site EUI moved from 82.7 kBtu/ft² (2020) to 73.5 kBtu/ft² (2025), a 11% decrease. Reported emissions went from 279 tCO₂e to 242 tCO₂e over the same span (down 13%).

What does an ENERGY STAR score of 44 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 44 means the building performs better than about 44% of its national peers. BuildingCensus bands the score into report-card grades; 44 falls in band D — lowest band (1–54). It sits 31 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. 50 CHURCH ST's 73.5 kBtu/ft² across 61,414 sq ft works out to about 4.5 billion Btu (1,323 MWh-equivalent) in 2025. Its source EUI of 91.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 148,870 kWh of electricity and 40,089 therms of natural gas for the year.

Which law requires 50 CHURCH ST to report its energy use?

50 CHURCH 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:0874/003:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.