1 POLK ST

How does 1 POLK 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. 1 POLK ST's ENERGY STAR score of 88 compares with an average of 86 across the 129 that report a score; it scores higher than 32% of them and lower than 65%. Its site EUI of 31.2 kBtu/ft² is about 11% 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 1.7 kgCO₂e/ft² is roughly in line with the group average of 1.9 kgCO₂e/ft².

At 199,037 sq ft, it is roughly in line with the average floor area of 191,699 sq ft for those buildings. It was built in 2008, 22 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 1 POLK ST's energy performance changed over time?

BuildingCensus holds 8 San Francisco disclosures for 1 POLK ST, covering report years 2018–2025. Its ENERGY STAR score went from 70 in 2018 to 88 in 2025 (+18 points). Site EUI moved from 37.5 kBtu/ft² (2018) to 31.2 kBtu/ft² (2025), a 17% decrease. Reported emissions went from 421 tCO₂e to 306 tCO₂e over the same span (down 27%).

What does an ENERGY STAR score of 88 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 88 means the building performs better than about 88% of its national peers. BuildingCensus bands the score into report-card grades; 88 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. 1 POLK ST's 31.2 kBtu/ft² across 199,037 sq ft works out to about 6.2 billion Btu (1,820 MWh-equivalent) in 2025. Its source EUI of 68.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,062,177 kWh of electricity and 18,679 therms of natural gas for the year.

Which law requires 1 POLK ST to report its energy use?

1 POLK 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:0814/022:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.