Gunst Building
Commercial in San Francisco, CA · 323 GEARY ST · 94102
At a glance
Gunst Building is a 50,993-square-foot commercial building at 323 GEARY ST in San Francisco, California, built in 1908. In its 2025 San Francisco benchmarking disclosure it reported an ENERGY STAR score of 44 out of 100 (grade D), a site energy-use intensity of 56.9 kBtu/ft² and 161 tCO₂e of greenhouse-gas emissions. That score is higher than 10% of the 790 scored commercial buildings in San Francisco.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 44 (band D) |
| Site EUI | 56.9 kBtu/ft² |
| Source EUI | 116.2 kBtu/ft² |
| GHG emissions | 161 tCO₂e |
| GHG intensity | 3.1 kgCO₂e/ft² |
| Electricity | 482,043 kWh |
| Natural gas | 12,554 therms |
| Gross floor area | 50,993 sq ft |
| Source record | sf:0315/001:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 44 | -42 | 56.9 kBtu/ft² | 161 tCO₂e |
| 2024 | 86 | +34 | 34.3 kBtu/ft² | 101 tCO₂e |
| 2023 | 52 | -38 | 52.5 kBtu/ft² | 167 tCO₂e |
| 2022 | 90 | 32.2 kBtu/ft² | 95 tCO₂e | |
| 2021 | — | 29.1 kBtu/ft² | 83 tCO₂e | |
| 2020 | — | — | — | |
| 2019 | 84 | +5 | 35.2 kBtu/ft² | 104 tCO₂e |
| 2018 | 79 | -17 | 41.2 kBtu/ft² | 124 tCO₂e |
| 2017 | 96 | +1 | 35.9 kBtu/ft² | 115 tCO₂e |
| 2016 | 95 | ±0 | 38.8 kBtu/ft² | 134 tCO₂e |
| 2015 | 95 | +1 | 37.6 kBtu/ft² | 127 tCO₂e |
| 2014 | 94 | +2 | 36.4 kBtu/ft² | 124 tCO₂e |
| 2013 | 92 | +5 | 44.6 kBtu/ft² | 149 tCO₂e |
| 2012 | 87 | 31.7 kBtu/ft² | 147 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.
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Location
- Address
- 323 GEARY ST
- City
- San Francisco
- State
- California
- ZIP
- 94102
- Coordinates
- 37.78711, -122.40846
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
How does Gunst Building 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. Gunst Building's ENERGY STAR score of 44 compares with an average of 78 across the 790 that report a score; it scores higher than 10% of them and lower than 90%. Its site EUI of 56.9 kBtu/ft² is about 16% above the average of 49.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 3.1 kgCO₂e/ft² is about 17% above the group average of 2.7 kgCO₂e/ft².
At 50,993 sq ft, it is about half of the average floor area of 107,408 sq ft for those buildings. It was built in 1908, 33 years earlier 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 Gunst Building's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for Gunst Building, covering report years 2011–2025. Its ENERGY STAR score went from 87 in 2012 to 44 in 2025 (-43 points); its best year on file was 2017, at 96. Site EUI moved from 31.7 kBtu/ft² (2012) to 56.9 kBtu/ft² (2025), an 79% increase. Reported emissions went from 147 tCO₂e to 161 tCO₂e over the same span (up 9%).
What does an ENERGY STAR score of 44 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 44 means the building performs better than about 44% of its national peers. BuildingCensus bands the score into report-card grades; 44 falls in band D — lowest band (1–54). It sits 31 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. Gunst Building's 56.9 kBtu/ft² across 50,993 sq ft works out to about 2.9 billion Btu (850 MWh-equivalent) in 2025. Its source EUI of 116.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 482,043 kWh of electricity and 12,554 therms of natural gas for the year.
Which law requires Gunst Building to report its energy use?
Gunst Building 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:0315/001:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
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Frequently asked questions
What is Gunst Building's energy grade?
Gunst Building scores 44 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 Gunst Building use?
Its 2025 site energy-use intensity was 56.9 kBtu/ft² (116.2 kBtu/ft² source) across 50,993 sq ft, including 482,043 kWh of electricity and 12,554 therms of natural gas.
What are Gunst Building's carbon emissions?
Gunst Building reported 161 tCO₂e of greenhouse-gas emissions (3.1 kgCO₂e/ft²) for 2025.
Where is Gunst Building?
Gunst Building is at 323 GEARY ST, in San Francisco, California 94102. Its coordinates are 37.78711, -122.40846 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is Gunst Building and when was it built?
Gunst Building has 50,993 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1908 as its year built. It is classed as commercial.
Is Gunst Building 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, “Gunst Building, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/gunst-building-7e408026 (data as of October 2, 2026).