123 Mission Street
Office in California, CA · 123 Mission Street, San Francisco · 94105
At a glance
123 Mission Street is a 402,052-square-foot office building at 123 Mission Street, San Francisco in San Francisco, California, built in 1986. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 99 out of 100 (grade A), a site energy-use intensity of 15.4 kBtu/ft² and 390 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 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 15.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 390 tCO₂e |
| GHG intensity | 1.0 kgCO₂e/ft² |
| Electricity | 1,125,088 kWh |
| Natural gas | 25,433 therms |
| Gross floor area | 402,052 sq ft |
| Source record | california:2840066:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 99 | ±0 | 15.4 kBtu/ft² | 390 tCO₂e |
| 2023 | 99 | +1 | 17.5 kBtu/ft² | 457 tCO₂e |
| 2022 | 98 | -2 | 20.2 kBtu/ft² | 505 tCO₂e |
| 2021 | 100 | +5 | 16.4 kBtu/ft² | 380 tCO₂e |
| 2020 | 95 | +3 | 24.9 kBtu/ft² | 567 tCO₂e |
| 2019 | 92 | -3 | 36.0 kBtu/ft² | 931 tCO₂e |
| 2018 | 95 | 30.6 kBtu/ft² | 845 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
- 123 Mission Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94105
- Coordinates
- 37.79177, -122.39443
Within ~1 km
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- Pge-Go Complex 102_245M_77Blscore 72
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See also: most efficient in California · biggest emitters
How does 123 Mission Street compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 123 Mission Street'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 15.4 kBtu/ft² is about 73% 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 1.0 kgCO₂e/ft² is about 73% below the group average of 3.6 kgCO₂e/ft².
At 402,052 sq ft, it is about 165% above the average floor area of 151,937 sq ft for those buildings. Its 1986 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 123 Mission Street's energy performance changed over time?
BuildingCensus holds 7 California disclosures for 123 Mission Street, covering report years 2018–2024. Its ENERGY STAR score went from 95 in 2018 to 99 in 2024 (+4 points); its best year on file was 2021, at 100. Site EUI moved from 30.6 kBtu/ft² (2018) to 15.4 kBtu/ft² (2024), a 50% decrease. Reported emissions went from 845 tCO₂e to 390 tCO₂e over the same span (down 54%).
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. 123 Mission Street's 15.4 kBtu/ft² across 402,052 sq ft works out to about 6.2 billion Btu (1,815 MWh-equivalent) in 2024. The disclosure also reports 1,125,088 kWh of electricity and 25,433 therms of natural gas for the year.
Which law requires 123 Mission Street to report its energy use?
123 Mission 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:2840066:2024). 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
- Figueroa Tower· 401,983 sq ft · EUI 28.7 kBtu/ft²
- Landmark Ii· 400,121 sq ft · score 52 (D)
- Vo2 9060 Santa Monica Blvd, West Hollywood, Ca 90069· 400,000 sq ft · score 100 (A)
- Pacific Design Center - Red· 400,000 sq ft · score 86 (A)
- 950 West 190Th Street (Rexford Ebewe)· 399,663 sq ft · score 91 (A)
- Center West· 398,836 sq ft · score 95 (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 123 Mission Street's energy grade?
123 Mission Street scores 99 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 123 Mission Street use?
Its 2024 site energy-use intensity was 15.4 kBtu/ft² across 402,052 sq ft, including 1,125,088 kWh of electricity and 25,433 therms of natural gas.
What are 123 Mission Street's carbon emissions?
123 Mission Street reported 390 tCO₂e of greenhouse-gas emissions (1.0 kgCO₂e/ft²) for 2024.
Where is 123 Mission Street?
123 Mission Street is at 123 Mission Street, San Francisco, in San Francisco, California 94105. Its coordinates are 37.79177, -122.39443 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 123 Mission Street and when was it built?
123 Mission Street has 402,052 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1986 as its year built. It is classed as office.
Is 123 Mission 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, “123 Mission Street, San Francisco, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/123-mission-street-f0be217b (data as of July 9, 2026).