601 O'Farrell St
Multifamily Housing in California, CA · O'Farrell Street, San Francisco · 94109
At a glance
601 O'Farrell St is a 55,350-square-foot multifamily housing building at O'Farrell Street, San Francisco in San Francisco, California, built in 1928. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 74 out of 100 (grade B), a site energy-use intensity of 77.7 kBtu/ft² and 236 tCO₂e of greenhouse-gas emissions. That score is higher than 26% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 74 (band B) |
| Site EUI | 77.7 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 236 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 65,764 kWh |
| Natural gas | 41,550 therms |
| Gross floor area | 55,350 sq ft |
| Source record | california:35026625:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 74 | +5 | 77.7 kBtu/ft² | 236 tCO₂e |
| 2023 | 69 | 81.1 kBtu/ft² | 247 tCO₂e |
Compliance context
AB 802 (Public Resources Code §25402.10)
AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- O'Farrell Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94109
- Coordinates
- 37.78456, -122.42286
Within ~1 km
Nearby benchmarked buildings
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- 601 VAN NESS AVEscore 87
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- 1101 Van Nessscore 37
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Hospital (General Medical & Surgical) · 777,383 sq ft
- 1355 Marketscore —
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See also: most efficient in California · biggest emitters
How does 601 O'Farrell St compare with other multifamily housing buildings in California?
The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. 601 O'Farrell St's ENERGY STAR score of 74 compares with an average of 82 across the 9,612 that report a score; it scores higher than 26% of them and lower than 73%. Its site EUI of 77.7 kBtu/ft² is about 126% above the average of 34.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 4.3 kgCO₂e/ft² is about twice the group average of 2.1 kgCO₂e/ft².
At 55,350 sq ft, it is about 63% below the average floor area of 150,919 sq ft for those buildings. It was built in 1928, 60 years earlier than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 601 O'Farrell St's energy performance changed over time?
BuildingCensus holds 2 California disclosures for 601 O'Farrell St, covering report years 2023–2024. Its ENERGY STAR score went from 69 in 2023 to 74 in 2024 (+5 points). Site EUI moved from 81.1 kBtu/ft² (2023) to 77.7 kBtu/ft² (2024), a 4% decrease. Reported emissions went from 247 tCO₂e to 236 tCO₂e over the same span (down 4%).
What does an ENERGY STAR score of 74 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 74 means the building performs better than about 74% of its national peers. BuildingCensus bands the score into report-card grades; 74 falls in band B — above median (70–84). It sits 1 points below 75, the threshold for ENERGY STAR certification. In California, 65% 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. 601 O'Farrell St's 77.7 kBtu/ft² across 55,350 sq ft works out to about 4.3 billion Btu (1,260 MWh-equivalent) in 2024. The disclosure also reports 65,764 kWh of electricity and 41,550 therms of natural gas for the year.
Which law requires 601 O'Farrell St to report its energy use?
601 O'Farrell St reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record california:35026625:2024). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
More multifamily housing buildings in California
- Cg Apartments (Cg48)· 55,334 sq ft · EUI 70.5 kBtu/ft²
- 12793 Mercer St, Pacoima, Ca 91331· 55,326 sq ft · score 97 (A)
- Telacu Housing-Pacoima, Inc.· 55,326 sq ft · score 95 (A)
- 50 Main St· 55,326 sq ft · score 49 (D)
- Shoemaker Court Apts· 55,325 sq ft · EUI 56.5 kBtu/ft²
- Marmion Way (Mr240)· 55,315 sq ft · score 76 (B)
- Multifamily Housing buildings in California· 10,630 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is 601 O'Farrell St's energy grade?
601 O'Farrell St scores 74 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 601 O'Farrell St use?
Its 2024 site energy-use intensity was 77.7 kBtu/ft² across 55,350 sq ft, including 65,764 kWh of electricity and 41,550 therms of natural gas.
What are 601 O'Farrell St's carbon emissions?
601 O'Farrell St reported 236 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2024.
Where is 601 O'Farrell St?
601 O'Farrell St is at O'Farrell Street, San Francisco, in San Francisco, California 94109. Its coordinates are 37.78456, -122.42286 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 601 O'Farrell St and when was it built?
601 O'Farrell St has 55,350 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1928 as its year built. It is classed as multifamily housing.
Is 601 O'Farrell St covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
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About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “601 O'Farrell St, San Francisco, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/601-o-farrell-st-d40484c5 (data as of July 9, 2026).