645 Harrison Street
Commercial in San Francisco, CA · 645 HARRISON ST · 94107
At a glance
645 Harrison Street is a 143,455-square-foot commercial building at 645 HARRISON ST in San Francisco, California, built in 1948. In its 2025 San Francisco benchmarking disclosure it reported an ENERGY STAR score of 31 out of 100 (grade D), a site energy-use intensity of 51.6 kBtu/ft² and 423 tCO₂e of greenhouse-gas emissions. That score is higher than 6% of the 790 scored commercial buildings in San Francisco.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 31 (band D) |
| Site EUI | 51.6 kBtu/ft² |
| Source EUI | 144.4 kBtu/ft² |
| GHG emissions | 423 tCO₂e |
| GHG intensity | 3.0 kgCO₂e/ft² |
| Electricity | 2,168,249 kWh |
| Gross floor area | 143,455 sq ft |
| Source record | sf:3763/105:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 31 | -13 | 51.6 kBtu/ft² | 423 tCO₂e |
| 2024 | 44 | -4 | 48.5 kBtu/ft² | 462 tCO₂e |
| 2023 | 48 | -5 | 46.3 kBtu/ft² | 441 tCO₂e |
| 2022 | 53 | 43.8 kBtu/ft² | 431 tCO₂e | |
| 2021 | — | 39.1 kBtu/ft² | 385 tCO₂e | |
| 2020 | — | 46.0 kBtu/ft² | 452 tCO₂e | |
| 2019 | — | — | — | |
| 2018 | — | — | — | |
| 2017 | — | — | — | |
| 2016 | — | — | — | |
| 2015 | — | — | — | |
| 2014 | — | — | — | |
| 2013 | — | — | — | |
| 2012 | — | 40.9 kBtu/ft² | 136 tCO₂e | |
| 2011 | — | — | — |
Compliance context
SF Environment Code Chapter 20
San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
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
- 645 HARRISON ST
- City
- San Francisco
- State
- California
- ZIP
- 94107
- Coordinates
- 37.78338, -122.39571
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
How does 645 Harrison Street compare with other commercial buildings in San Francisco?
The latest disclosures cover 1,683 commercial buildings in San Francisco, out of 2,509 buildings citywide. 645 Harrison Street's ENERGY STAR score of 31 compares with an average of 78 across the 790 that report a score; it scores higher than 6% of them and lower than 94%. Its site EUI of 51.6 kBtu/ft² is roughly in line with the average of 49.2 kBtu/ft². Its emissions intensity of 3.0 kgCO₂e/ft² is roughly in line with the group average of 2.7 kgCO₂e/ft².
At 143,455 sq ft, it is about 34% above the average floor area of 107,408 sq ft for those buildings. It was built in 1948, 7 years later than the group's average year built (1941). Across all 24 jurisdictions BuildingCensus covers, the 2,307 commercial buildings average an ENERGY STAR score of 76 and a site EUI of 51.3 kBtu/ft².
How has 645 Harrison Street's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for 645 Harrison Street, covering report years 2011–2025. Its ENERGY STAR score went from 53 in 2022 to 31 in 2025 (-22 points); its best year on file was 2022, at 53. Site EUI moved from 40.9 kBtu/ft² (2012) to 51.6 kBtu/ft² (2025), an 26% increase. Reported emissions went from 136 tCO₂e to 423 tCO₂e over the same span (up 211%).
What does an ENERGY STAR score of 31 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 31 means the building performs better than about 31% of its national peers. BuildingCensus bands the score into report-card grades; 31 falls in band D — lowest band (1–54). It sits 44 points below 75, the threshold for ENERGY STAR certification. In San Francisco, 73% 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. 645 Harrison Street's 51.6 kBtu/ft² across 143,455 sq ft works out to about 7.4 billion Btu (2,169 MWh-equivalent) in 2025. Its source EUI of 144.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,168,249 kWh of electricity for the year.
Which law requires 645 Harrison Street to report its energy use?
645 Harrison Street reports under SF Environment Code Chapter 20, the legal basis of San Francisco's Existing Buildings Energy Performance Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record sf:3763/105:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
More commercial buildings in San Francisco
- The Townsend Building· 142,653 sq ft · score 95 (A)
- 90 New Montgomery· 142,538 sq ft · score 93 (A)
- 1700 Montgomery· 142,446 sq ft · score 84 (B)
- 2101 MISSION ST· 142,241 sq ft · score 100 (A)
- 250 Brannan· 140,930 sq ft · score 95 (A)
- Hotel Zelos· 140,629 sq ft · score 86 (A)
- Commercial buildings in San Francisco· 1,683 benchmarked
- All San Francisco benchmarked buildings· SF Environment Code Chapter 20
- Most efficient large buildings in San Francisco
- Least efficient large buildings in San Francisco
- Biggest emitters in San Francisco
Frequently asked questions
What is 645 Harrison Street's energy grade?
645 Harrison Street scores 31 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2025 San Francisco disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 645 Harrison Street use?
Its 2025 site energy-use intensity was 51.6 kBtu/ft² (144.4 kBtu/ft² source) across 143,455 sq ft, including 2,168,249 kWh of electricity.
What are 645 Harrison Street's carbon emissions?
645 Harrison Street reported 423 tCO₂e of greenhouse-gas emissions (3.0 kgCO₂e/ft²) for 2025.
Where is 645 Harrison Street?
645 Harrison Street is at 645 HARRISON ST, in San Francisco, California 94107. Its coordinates are 37.78338, -122.39571 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is 645 Harrison Street and when was it built?
645 Harrison Street has 143,455 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1948 as its year built. It is classed as commercial.
Is 645 Harrison Street covered by SF Environment Code Chapter 20?
Yes — it appears in the 2025 Existing Buildings Energy Performance Ordinance disclosure, which lists the buildings reporting under SF Environment Code Chapter 20.
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About this data
Source: Existing Buildings Energy Performance Ordinance (SF Environment Code Chapter 20), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “645 Harrison Street, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/645-harrison-street-27b9f8e9 (data as of October 2, 2026).