345 California Street
Office in California, CA · 345 California Street, San Francisco · 94104
At a glance
345 California Street is a 791,951-square-foot office building at 345 California Street, San Francisco in San Francisco, California, built in 1985. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 91 out of 100 (grade A), a site energy-use intensity of 30.1 kBtu/ft² and 1,594 tCO₂e of greenhouse-gas emissions. That score is higher than 66% 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 | 91 (band A) |
| Site EUI | 30.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,594 tCO₂e |
| GHG intensity | 2.0 kgCO₂e/ft² |
| Electricity | 4,542,520 kWh |
| Gross floor area | 791,951 sq ft |
| Source record | california:1219609:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 91 | ±0 | 30.1 kBtu/ft² | 1,594 tCO₂e |
| 2023 | 91 | +1 | 32.9 kBtu/ft² | 1,818 tCO₂e |
| 2022 | 90 | 31.4 kBtu/ft² | 1,693 tCO₂e | |
| 2021 | — | 31.2 kBtu/ft² | 1,536 tCO₂e | |
| 2020 | — | 31.0 kBtu/ft² | 1,535 tCO₂e | |
| 2019 | 91 | +2 | 40.6 kBtu/ft² | 2,211 tCO₂e |
| 2018 | 89 | 37.7 kBtu/ft² | 2,076 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
- 345 California Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94104
- Coordinates
- 37.79302, -122.40055
Within ~1 km
Nearby benchmarked buildings
- 555 Californiascore 75
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- PGE-GO Complexscore —
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- One Market Plazascore 80
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- One Market Plazascore 79
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- 555 California Streetscore 76
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- 500 BATTERY STscore —
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See also: most efficient in California · biggest emitters
How does 345 California Street compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 345 California Street's ENERGY STAR score of 91 compares with an average of 75 across the 4,912 that report a score; it scores higher than 66% of them and lower than 31%. Its site EUI of 30.1 kBtu/ft² is about half of 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 2.0 kgCO₂e/ft² is about 44% below the group average of 3.6 kgCO₂e/ft².
At 791,951 sq ft, it is about 421% 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 345 California Street's energy performance changed over time?
BuildingCensus holds 7 California disclosures for 345 California Street, covering report years 2018–2024. Its ENERGY STAR score went from 89 in 2018 to 91 in 2024 (+2 points); its best year on file was 2019, at 91. Site EUI moved from 37.7 kBtu/ft² (2018) to 30.1 kBtu/ft² (2024), a 20% decrease. Reported emissions went from 2,076 tCO₂e to 1,594 tCO₂e over the same span (down 23%).
What does an ENERGY STAR score of 91 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 91 means the building performs better than about 91% of its national peers. BuildingCensus bands the score into report-card grades; 91 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. 345 California Street's 30.1 kBtu/ft² across 791,951 sq ft works out to about 23.8 billion Btu (6,986 MWh-equivalent) in 2024. The disclosure also reports 4,542,520 kWh of electricity for the year.
Which law requires 345 California Street to report its energy use?
345 California 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:1219609:2024). 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
- 509 Ronald Reagan State Building· 787,404 sq ft · score 85 (A)
- 303 Second Street· 784,658 sq ft · score 91 (A)
- Bcal 44 Montgomery Property Llc· 781,262 sq ft · score 84 (B)
- Two Embarcadero Center· 780,304 sq ft · score 93 (A)
- 400 South Hope Street· 779,676 sq ft · score 90 (A)
- Three Embarcadero Center· 776,350 sq ft · score 94 (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 345 California Street's energy grade?
345 California Street scores 91 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 345 California Street use?
Its 2024 site energy-use intensity was 30.1 kBtu/ft² across 791,951 sq ft, including 4,542,520 kWh of electricity.
What are 345 California Street's carbon emissions?
345 California Street reported 1,594 tCO₂e of greenhouse-gas emissions (2.0 kgCO₂e/ft²) for 2024.
Where is 345 California Street?
345 California Street is at 345 California Street, San Francisco, in San Francisco, California 94104. Its coordinates are 37.79302, -122.40055 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 345 California Street and when was it built?
345 California Street has 791,951 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 345 California 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, “345 California Street, San Francisco, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/345-california-street-3b88e5cb (data as of July 9, 2026).