One Bush Street
Office in California, CA · 1 Bush Street, San Francisco · 94104
At a glance
One Bush Street is a 384,458-square-foot office building at 1 Bush Street, San Francisco in San Francisco, California, built in 1959. In its 2023 California benchmarking disclosure it reported an ENERGY STAR score of 94 out of 100 (grade A), a site energy-use intensity of 58.6 kBtu/ft² and 1,580 tCO₂e of greenhouse-gas emissions. That score is higher than 75% 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 | 94 (band A) |
| Site EUI | 58.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,580 tCO₂e |
| GHG intensity | 4.1 kgCO₂e/ft² |
| Electricity | 4,547,085 kWh |
| Gross floor area | 384,458 sq ft |
| Source record | california:1401549:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 94 | +3 | 58.6 kBtu/ft² | 1,580 tCO₂e |
| 2022 | 91 | -2 | — | 1,564 tCO₂e |
| 2021 | 93 | ±0 | — | 1,373 tCO₂e |
| 2020 | 93 | -1 | 61.2 kBtu/ft² | 1,498 tCO₂e |
| 2019 | 94 | +4 | 63.5 kBtu/ft² | 1,665 tCO₂e |
| 2018 | 90 | 65.6 kBtu/ft² | 1,759 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
- 1 Bush Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94104
- Coordinates
- 37.79105, -122.40005
Within ~1 km
Nearby benchmarked buildings
- 555 Californiascore 75
Commercial · 1,968,807 sq ft
- PGE-GO Complexscore —
Commercial · 1,948,626 sq ft
- One Market Plazascore 80
Commercial · 1,870,178 sq ft
- One Market Plazascore 79
Office · 1,830,339 sq ft
- 555 California Streetscore 76
Office · 1,810,397 sq ft
- 500 BATTERY STscore —
Mixed Residential · 1,779,579 sq ft
See also: most efficient in California · biggest emitters
How does One Bush Street compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. One Bush Street's ENERGY STAR score of 94 compares with an average of 75 across the 4,912 that report a score; it scores higher than 75% of them and lower than 22%. Its site EUI of 58.6 kBtu/ft² is roughly in line with the average of 56.4 kBtu/ft². Its emissions intensity of 4.1 kgCO₂e/ft² is about 14% above the group average of 3.6 kgCO₂e/ft².
At 384,458 sq ft, it is about 153% above the average floor area of 151,937 sq ft for those buildings. It was built in 1959, 26 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 One Bush Street's energy performance changed over time?
BuildingCensus holds 6 California disclosures for One Bush Street, covering report years 2018–2023. Its ENERGY STAR score went from 90 in 2018 to 94 in 2023 (+4 points); its best year on file was 2019, at 94. Site EUI moved from 65.6 kBtu/ft² (2018) to 58.6 kBtu/ft² (2023), a 11% decrease. Reported emissions went from 1,759 tCO₂e to 1,580 tCO₂e over the same span (down 10%).
What does an ENERGY STAR score of 94 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 94 means the building performs better than about 94% of its national peers. BuildingCensus bands the score into report-card grades; 94 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. One Bush Street's 58.6 kBtu/ft² across 384,458 sq ft works out to about 22.5 billion Btu (6,603 MWh-equivalent) in 2023. The disclosure also reports 4,547,085 kWh of electricity for the year.
Which law requires One Bush Street to report its energy use?
One Bush 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 2023 disclosure (source record california:1401549:2023). 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.
More office buildings in California
- 2100 Powell· 382,810 sq ft · score 96 (A)
- 1800 Ave Of The Stars· 382,696 sq ft · score 100 (A)
- Y-Sj 50 West Sf Llc· 382,099 sq ft · score 84 (B)
- Encino Gateway· 380,941 sq ft · score 97 (A)
- 818 West 7Th Street· 380,653 sq ft · score 97 (A)
- 126810- 225 West Santa Clara· 379,083 sq ft · score 92 (A)
- 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 One Bush Street's energy grade?
One Bush Street scores 94 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 One Bush Street use?
Its 2023 site energy-use intensity was 58.6 kBtu/ft² across 384,458 sq ft, including 4,547,085 kWh of electricity.
What are One Bush Street's carbon emissions?
One Bush Street reported 1,580 tCO₂e of greenhouse-gas emissions (4.1 kgCO₂e/ft²) for 2023.
Where is One Bush Street?
One Bush Street is at 1 Bush Street, San Francisco, in San Francisco, California 94104. Its coordinates are 37.79105, -122.40005 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is One Bush Street and when was it built?
One Bush Street has 384,458 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1959 as its year built. It is classed as office.
Is One Bush Street 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).
Working with California building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “One Bush Street, San Francisco, California — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/california/one-bush-street-c2294fc3 (data as of July 9, 2026).