Clementina Towers

How does Clementina Towers 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. Clementina Towers's ENERGY STAR score of 32 compares with an average of 85 across the 340 that report a score; it scores higher than 5% of them and lower than 95%. Its site EUI of 86.5 kBtu/ft² is about 140% above 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 4.7 kgCO₂e/ft² is about 134% above the group average of 2.0 kgCO₂e/ft².

At 175,046 sq ft, it is roughly in line with the average floor area of 165,572 sq ft for those buildings. It was built in 2007, 41 years later than the group's average year built (1967).

How has Clementina Towers's energy performance changed over time?

BuildingCensus holds 8 San Francisco disclosures for Clementina Towers, covering report years 2018–2025. Its ENERGY STAR score went from 37 in 2018 to 32 in 2025 (-5 points); its best year on file was 2019, at 77. Site EUI moved from 76.4 kBtu/ft² (2018) to 86.5 kBtu/ft² (2025), an 13% increase. Reported emissions went from 773 tCO₂e to 817 tCO₂e over the same span (up 6%).

What does an ENERGY STAR score of 32 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 32 means the building performs better than about 32% of its national peers. BuildingCensus bands the score into report-card grades; 32 falls in band D — lowest band (1–54). It sits 43 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. Clementina Towers's 86.5 kBtu/ft² across 175,046 sq ft works out to about 15.1 billion Btu (4,438 MWh-equivalent) in 2025. Its source EUI of 122.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 937,696 kWh of electricity and 119,439 therms of natural gas for the year.

Which law requires Clementina Towers to report its energy use?

Clementina Towers 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:3733/161:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.