Tahanan

How does Tahanan compare with other multifamily buildings in San Francisco?

The latest disclosures cover 192 multifamily buildings in San Francisco, out of 2,509 buildings citywide. Tahanan's ENERGY STAR score of 100 compares with an average of 86 across the 129 that report a score; it scores higher than 78% of them. Its site EUI of 22.6 kBtu/ft² is about 35% 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 1.2 kgCO₂e/ft² is about 35% below the group average of 1.9 kgCO₂e/ft².

At 75,000 sq ft, it is about 61% below the average floor area of 191,699 sq ft for those buildings. Its 1987 construction date is close to 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 Tahanan's energy performance changed over time?

BuildingCensus holds 4 San Francisco disclosures for Tahanan, covering report years 2022–2025. Its ENERGY STAR score was 100 in both 2022 and 2025. Site EUI moved from 26.6 kBtu/ft² (2022) to 22.6 kBtu/ft² (2025), a 15% decrease. Reported emissions went from 115 tCO₂e to 92 tCO₂e over the same span (down 19%).

What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. Tahanan's 22.6 kBtu/ft² across 75,000 sq ft works out to about 1.7 billion Btu (497 MWh-equivalent) in 2025. Its source EUI of 36.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 161,069 kWh of electricity and 11,461 therms of natural gas for the year.

Which law requires Tahanan to report its energy use?

Tahanan 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:3779/133:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.