501 Second Street
Office in California, CA · 501 2Nd Street, San Francisco · 94107
At a glance
501 Second Street is a 208,291-square-foot office building at 501 2Nd Street, San Francisco in San Francisco, California, built in 1985. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 83 out of 100 (grade B), a site energy-use intensity of 66.0 kBtu/ft² and 824 tCO₂e of greenhouse-gas emissions. That score is higher than 48% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 83 (band B) |
| Site EUI | 66.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 824 tCO₂e |
| GHG intensity | 4.0 kgCO₂e/ft² |
| Electricity | 2,143,379 kWh |
| Natural gas | 63,785 therms |
| Gross floor area | 208,291 sq ft |
| Source record | california:1690297:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 83 | -1 | 66.0 kBtu/ft² | 824 tCO₂e |
| 2023 | 84 | +1 | 66.7 kBtu/ft² | 866 tCO₂e |
| 2022 | 83 | -3 | 68.6 kBtu/ft² | 869 tCO₂e |
| 2021 | 86 | +19 | 65.7 kBtu/ft² | 775 tCO₂e |
| 2020 | 67 | -13 | 80.8 kBtu/ft² | 1,001 tCO₂e |
| 2019 | 80 | -9 | 95.9 kBtu/ft² | 1,235 tCO₂e |
| 2018 | 89 | 84.0 kBtu/ft² | 1,116 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 501 2Nd Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94107
- Coordinates
- 37.78323, -122.39279
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 501 Second Street compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 501 Second Street's ENERGY STAR score of 83 compares with an average of 75 across the 4,912 that report a score; it scores higher than 48% of them and lower than 50%. Its site EUI of 66.0 kBtu/ft² is about 17% above the average of 56.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 4.0 kgCO₂e/ft² is roughly in line with the group average of 3.6 kgCO₂e/ft².
At 208,291 sq ft, it is about 37% above the average floor area of 151,937 sq ft for those buildings. Its 1985 construction date is close to the group's average year built (1985). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 501 Second Street's energy performance changed over time?
BuildingCensus holds 7 California disclosures for 501 Second Street, covering report years 2018–2024. Its ENERGY STAR score went from 89 in 2018 to 83 in 2024 (-6 points); its best year on file was 2018, at 89. Site EUI moved from 84.0 kBtu/ft² (2018) to 66.0 kBtu/ft² (2024), a 21% decrease. Reported emissions went from 1,116 tCO₂e to 824 tCO₂e over the same span (down 26%).
What does an ENERGY STAR score of 83 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 83 means the building performs better than about 83% of its national peers. BuildingCensus bands the score into report-card grades; 83 falls in band B — above median (70–84). 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 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. 501 Second Street's 66.0 kBtu/ft² across 208,291 sq ft works out to about 13.7 billion Btu (4,029 MWh-equivalent) in 2024. The disclosure also reports 2,143,379 kWh of electricity and 63,785 therms of natural gas for the year.
Which law requires 501 Second Street to report its energy use?
501 Second Street 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:1690297:2024). 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 office buildings in California
- Hookston Square· 208,277 sq ft · EUI 36.8 kBtu/ft²
- 600 Townsend St. San Francisco Ca· 208,259 sq ft · score 74 (B)
- Adam Grant Building· 208,258 sq ft · score 97 (A)
- 300 Montgomery Associates· 208,193 sq ft · score 80 (B)
- 2100 University Square· 208,124 sq ft · score 89 (A)
- B10· 208,000 sq ft · EUI 117.4 kBtu/ft²
- Office buildings in California· 6,214 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 501 Second Street's energy grade?
501 Second Street scores 83 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 501 Second Street use?
Its 2024 site energy-use intensity was 66.0 kBtu/ft² across 208,291 sq ft, including 2,143,379 kWh of electricity and 63,785 therms of natural gas.
What are 501 Second Street's carbon emissions?
501 Second Street reported 824 tCO₂e of greenhouse-gas emissions (4.0 kgCO₂e/ft²) for 2024.
Where is 501 Second Street?
501 Second Street is at 501 2Nd Street, San Francisco, in San Francisco, California 94107. Its coordinates are 37.78323, -122.39279 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 501 Second Street and when was it built?
501 Second Street has 208,291 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1985 as its year built. It is classed as office.
Is 501 Second Street 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, “501 Second Street, San Francisco, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/501-second-street-f81d758a (data as of July 9, 2026).