500 Sansome
Office in California, CA · 500 Sansome Street, San Francisco · 94111
At a glance
500 Sansome is a 155,817-square-foot office building at 500 Sansome Street, San Francisco in San Francisco, California, built in 1929. In its 2023 California benchmarking disclosure it reported an ENERGY STAR score of 99 out of 100 (grade A), a site energy-use intensity of 21.3 kBtu/ft² and 196 tCO₂e of greenhouse-gas emissions. That score is higher than 88% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 21.3 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 196 tCO₂e |
| GHG intensity | 1.3 kgCO₂e/ft² |
| Electricity | 234,299 kWh |
| Natural gas | 26,191 therms |
| Gross floor area | 155,817 sq ft |
| Source record | california:2985002:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 99 | +18 | 21.3 kBtu/ft² | 196 tCO₂e |
| 2022 | 81 | +1 | 45.6 kBtu/ft² | 444 tCO₂e |
| 2021 | 80 | -6 | 48.1 kBtu/ft² | 421 tCO₂e |
| 2020 | 86 | -4 | 46.1 kBtu/ft² | 419 tCO₂e |
| 2019 | 90 | +3 | 51.2 kBtu/ft² | 513 tCO₂e |
| 2018 | 87 | 53.5 kBtu/ft² | 535 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
- 500 Sansome Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94111
- Coordinates
- 37.79515, -122.40123
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 500 Sansome compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 500 Sansome's ENERGY STAR score of 99 compares with an average of 75 across the 4,912 that report a score; it scores higher than 88% of them and lower than 9%. Its site EUI of 21.3 kBtu/ft² is about 62% below the average of 56.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.3 kgCO₂e/ft² is about 64% below the group average of 3.6 kgCO₂e/ft².
At 155,817 sq ft, it is roughly in line with the average floor area of 151,937 sq ft for those buildings. It was built in 1929, 56 years earlier than 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 500 Sansome's energy performance changed over time?
BuildingCensus holds 6 California disclosures for 500 Sansome, covering report years 2018–2023. Its ENERGY STAR score went from 87 in 2018 to 99 in 2023 (+12 points). Site EUI moved from 53.5 kBtu/ft² (2018) to 21.3 kBtu/ft² (2023), a 60% decrease. Reported emissions went from 535 tCO₂e to 196 tCO₂e over the same span (down 63%).
What does an ENERGY STAR score of 99 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 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 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 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. 500 Sansome's 21.3 kBtu/ft² across 155,817 sq ft works out to about 3.3 billion Btu (973 MWh-equivalent) in 2023. The disclosure also reports 234,299 kWh of electricity and 26,191 therms of natural gas for the year.
Which law requires 500 Sansome to report its energy use?
500 Sansome 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 2023 disclosure (source record california:2985002:2023). 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.
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Frequently asked questions
What is 500 Sansome's energy grade?
500 Sansome scores 99 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 500 Sansome use?
Its 2023 site energy-use intensity was 21.3 kBtu/ft² across 155,817 sq ft, including 234,299 kWh of electricity and 26,191 therms of natural gas.
What are 500 Sansome's carbon emissions?
500 Sansome reported 196 tCO₂e of greenhouse-gas emissions (1.3 kgCO₂e/ft²) for 2023.
Where is 500 Sansome?
500 Sansome is at 500 Sansome Street, San Francisco, in San Francisco, California 94111. Its coordinates are 37.79515, -122.40123 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 500 Sansome and when was it built?
500 Sansome has 155,817 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1929 as its year built. It is classed as office.
Is 500 Sansome covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2023 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, “500 Sansome, San Francisco, California — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/california/500-sansome-f3411b57 (data as of July 9, 2026).