W5 Brannan
Office in California, CA · 651 Brannan Street, San Francisco · 94107
At a glance
W5 Brannan is a 138,040-square-foot office building at 651 Brannan Street, San Francisco in San Francisco, California, built in 1932. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 75 out of 100 (grade B), a site energy-use intensity of 68.1 kBtu/ft² and 586 tCO₂e of greenhouse-gas emissions. That score is higher than 35% 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 | 75 (band B) |
| Site EUI | 68.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 586 tCO₂e |
| GHG intensity | 4.2 kgCO₂e/ft² |
| Electricity | 1,858,802 kWh |
| Natural gas | 31,020 therms |
| Gross floor area | 138,040 sq ft |
| Source record | california:3205134:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 75 | +2 | 68.1 kBtu/ft² | 586 tCO₂e |
| 2023 | 73 | -1 | 68.0 kBtu/ft² | 610 tCO₂e |
| 2022 | 74 | -21 | 62.8 kBtu/ft² | 547 tCO₂e |
| 2021 | 95 | -5 | 105.4 kBtu/ft² | 843 tCO₂e |
| 2020 | 100 | +6 | 55.9 kBtu/ft² | 436 tCO₂e |
| 2019 | 94 | ±0 | 134.0 kBtu/ft² | 1,199 tCO₂e |
| 2018 | 94 | 128.4 kBtu/ft² | 1,182 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
- 651 Brannan Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94107
- Coordinates
- 37.77525, -122.39974
Within ~1 km
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See also: most efficient in California · biggest emitters
How does W5 Brannan compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. W5 Brannan's ENERGY STAR score of 75 compares with an average of 75 across the 4,912 that report a score; it scores higher than 35% of them and lower than 64%. Its site EUI of 68.1 kBtu/ft² is about 21% 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 4.2 kgCO₂e/ft² is about 18% above the group average of 3.6 kgCO₂e/ft².
At 138,040 sq ft, it is roughly in line with the average floor area of 151,937 sq ft for those buildings. It was built in 1932, 53 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 W5 Brannan's energy performance changed over time?
BuildingCensus holds 7 California disclosures for W5 Brannan, covering report years 2018–2024. Its ENERGY STAR score went from 94 in 2018 to 75 in 2024 (-19 points); its best year on file was 2020, at 100. Site EUI moved from 128.4 kBtu/ft² (2018) to 68.1 kBtu/ft² (2024), a 47% decrease. Reported emissions went from 1,182 tCO₂e to 586 tCO₂e over the same span (down 50%).
What does an ENERGY STAR score of 75 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 75 means the building performs better than about 75% of its national peers. BuildingCensus bands the score into report-card grades; 75 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. W5 Brannan's 68.1 kBtu/ft² across 138,040 sq ft works out to about 9.4 billion Btu (2,755 MWh-equivalent) in 2024. The disclosure also reports 1,858,802 kWh of electricity and 31,020 therms of natural gas for the year.
Which law requires W5 Brannan to report its energy use?
W5 Brannan 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:3205134:2024). 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
- 2440 S. Sepulveda Blvd.· 138,000 sq ft · EUI 69.6 kBtu/ft²
- 5651 Copley Dr· 138,000 sq ft · score 100 (A)
- 720302 - Stockton Regional Office - United States· 137,932 sq ft · score 98 (A)
- Stockton Regional Office· 137,932 sq ft · score 83 (B)
- Burbank Empire Center- 2400· 137,764 sq ft · score 100 (A)
- Us-Sjc-Tm3· 137,761 sq ft · score 77 (B)
- 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 W5 Brannan's energy grade?
W5 Brannan scores 75 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 W5 Brannan use?
Its 2024 site energy-use intensity was 68.1 kBtu/ft² across 138,040 sq ft, including 1,858,802 kWh of electricity and 31,020 therms of natural gas.
What are W5 Brannan's carbon emissions?
W5 Brannan reported 586 tCO₂e of greenhouse-gas emissions (4.2 kgCO₂e/ft²) for 2024.
Where is W5 Brannan?
W5 Brannan is at 651 Brannan Street, San Francisco, in San Francisco, California 94107. Its coordinates are 37.77525, -122.39974 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is W5 Brannan and when was it built?
W5 Brannan has 138,040 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1932 as its year built. It is classed as office.
Is W5 Brannan 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, “W5 Brannan, San Francisco, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/w5-brannan-24a5f126 (data as of July 9, 2026).