645 STOCKTON ST
Mixed Residential in San Francisco, CA · 94108
At a glance
645 STOCKTON ST is a 58,129-square-foot mixed residential building in San Francisco, California, built in 1928. In its 2025 San Francisco benchmarking disclosure it reported an ENERGY STAR score of 58 out of 100 (grade C), a site energy-use intensity of 73.7 kBtu/ft² and 229 tCO₂e of greenhouse-gas emissions. That score is higher than 12% of the 340 scored mixed residential buildings in San Francisco.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 58 (band C) |
| Site EUI | 73.7 kBtu/ft² |
| Source EUI | 90.2 kBtu/ft² |
| GHG emissions | 229 tCO₂e |
| GHG intensity | 3.9 kgCO₂e/ft² |
| Electricity | 125,157 kWh |
| Natural gas | 38,567 therms |
| Gross floor area | 58,129 sq ft |
| Source record | sf:0256/002:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 58 | -17 | 73.7 kBtu/ft² | 229 tCO₂e |
| 2024 | 75 | +13 | 66.3 kBtu/ft² | 209 tCO₂e |
| 2023 | 62 | -28 | 73.0 kBtu/ft² | 233 tCO₂e |
| 2022 | 90 | 68.4 kBtu/ft² | 219 tCO₂e | |
| 2021 | — | 77.1 kBtu/ft² | 242 tCO₂e | |
| 2020 | — | 75.8 kBtu/ft² | 241 tCO₂e | |
| 2019 | 80 | +3 | 69.3 kBtu/ft² | 223 tCO₂e |
| 2018 | 77 | 73.6 kBtu/ft² | 236 tCO₂e |
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.
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Location
- Address
- 645 STOCKTON ST
- City
- San Francisco
- State
- California
- ZIP
- 94108
- Coordinates
- 37.79181, -122.40780
Within ~1 km
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- 555 California Streetscore 76
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- 500 BATTERY STscore —
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See also: most efficient in San Francisco · biggest emitters
How does 645 STOCKTON ST compare with other mixed residential buildings in San Francisco?
The latest disclosures cover 610 mixed residential buildings in San Francisco, out of 2,509 buildings citywide. 645 STOCKTON ST's ENERGY STAR score of 58 compares with an average of 85 across the 340 that report a score; it scores higher than 12% of them and lower than 87%. Its site EUI of 73.7 kBtu/ft² is about twice the average of 36.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 3.9 kgCO₂e/ft² is about twice the group average of 2.0 kgCO₂e/ft².
At 58,129 sq ft, it is about 65% below the average floor area of 165,572 sq ft for those buildings. It was built in 1928, 38 years earlier than the group's average year built (1967).
How has 645 STOCKTON ST's energy performance changed over time?
BuildingCensus holds 8 San Francisco disclosures for 645 STOCKTON ST, covering report years 2018–2025. Its ENERGY STAR score went from 77 in 2018 to 58 in 2025 (-19 points); its best year on file was 2022, at 90. Site EUI moved from 73.6 kBtu/ft² (2018) to 73.7 kBtu/ft² (2025), an 0% increase. Reported emissions went from 236 tCO₂e to 229 tCO₂e over the same span (down 3%).
What does an ENERGY STAR score of 58 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 58 means the building performs better than about 58% of its national peers. BuildingCensus bands the score into report-card grades; 58 falls in band C — below median (55–69). It sits 17 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 STOCKTON ST's 73.7 kBtu/ft² across 58,129 sq ft works out to about 4.3 billion Btu (1,256 MWh-equivalent) in 2025. Its source EUI of 90.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 125,157 kWh of electricity and 38,567 therms of natural gas for the year.
Which law requires 645 STOCKTON ST to report its energy use?
645 STOCKTON ST 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:0256/002:2025). 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 mixed residential buildings in San Francisco
- HERALD HOTEL· 58,128 sq ft
- 1401 STOCKTON ST· 57,957 sq ft · EUI 25.5 kBtu/ft²
- 2001 CALIFORNIA ST· 57,950 sq ft · score 85 (A)
- 455 VALLEJO ST· 57,948 sq ft · score 100 (A)
- 1073 MARKET ST· 57,815 sq ft
- 5 PEREGO TER· 57,389 sq ft · score 100 (A)
- Mixed Residential buildings in San Francisco· 610 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 STOCKTON ST's energy grade?
645 STOCKTON ST scores 58 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2025 San Francisco disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 645 STOCKTON ST use?
Its 2025 site energy-use intensity was 73.7 kBtu/ft² (90.2 kBtu/ft² source) across 58,129 sq ft, including 125,157 kWh of electricity and 38,567 therms of natural gas.
What are 645 STOCKTON ST's carbon emissions?
645 STOCKTON ST reported 229 tCO₂e of greenhouse-gas emissions (3.9 kgCO₂e/ft²) for 2025.
Where is 645 STOCKTON ST?
645 STOCKTON ST is in San Francisco, California 94108. Its coordinates are 37.79181, -122.40780 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is 645 STOCKTON ST and when was it built?
645 STOCKTON ST has 58,129 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1928 as its year built. It is classed as mixed residential.
Is 645 STOCKTON ST 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 STOCKTON ST, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/645-stockton-st-3c9bdf62 (data as of October 2, 2026).