55 UNION ST
Commercial in San Francisco, CA · 94111
At a glance
55 UNION ST is a 43,000-square-foot commercial building in San Francisco, California, built in 1900. It is listed in the 2025 Existing Buildings Energy Performance Ordinance disclosure without energy figures: no ENERGY STAR score, energy use or emissions were published for it that year. Its most recent reported figures are from 2018, when it scored 65 out of 100 on ENERGY STAR with a site EUI of 64.9 kBtu/ft².
No energy data reported for 2025
55 UNION ST appears in the 2025 Existing Buildings Energy Performance Ordinance disclosure, but no ENERGY STAR score, energy use or emissions were published for it — the building did not report benchmarking data for that year. Earlier reported years are in the table below.
Floor area on file: 43,000 sq ft · Built 1900
Source record sf:0111/004:2025
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | — | — | |
| 2024 | — | — | — | |
| 2023 | — | — | — | |
| 2022 | — | — | — | |
| 2021 | — | — | — | |
| 2020 | — | — | — | |
| 2019 | — | — | — | |
| 2018 | 65 | -19 | 64.9 kBtu/ft² | 168 tCO₂e |
| 2017 | 84 | -3 | 49.3 kBtu/ft² | 143 tCO₂e |
| 2016 | 87 | +12 | 60.0 kBtu/ft² | 187 tCO₂e |
| 2015 | 75 | 75.1 kBtu/ft² | 224 tCO₂e | |
| 2014 | — | 84.7 kBtu/ft² | 263 tCO₂e | |
| 2013 | — | 146.4 kBtu/ft² | 469 tCO₂e | |
| 2012 | — | — | — | |
| 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
- 55 UNION ST
- City
- San Francisco
- State
- California
- ZIP
- 94111
- Coordinates
- 37.80119, -122.40106
Within ~1 km
Nearby benchmarked buildings
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- 500 BATTERY STscore —
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- The Gateway Apartmentsscore —
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- Three Embarcadero Centerscore 95
Commercial · 1,126,589 sq ft
- Two Embarcadero Centerscore 95
Commercial · 1,124,443 sq ft
See also: most efficient in San Francisco · biggest emitters
How has 55 UNION ST's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for 55 UNION ST, covering report years 2011–2025. Its ENERGY STAR score went from 75 in 2015 to 65 in 2018 (-10 points); its best year on file was 2016, at 87. Site EUI moved from 146.4 kBtu/ft² (2013) to 64.9 kBtu/ft² (2018), a 56% decrease. Reported emissions went from 469 tCO₂e to 168 tCO₂e over the same span (down 64%).
Which law requires 55 UNION ST to report its energy use?
55 UNION 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:0111/004:2025). 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 55 UNION ST's energy grade?
55 UNION ST has no grade: it did not report energy data for 2025. The 2025 Existing Buildings Energy Performance Ordinance disclosure lists the building but publishes no ENERGY STAR score, energy use or emissions for it.
Where is 55 UNION ST?
55 UNION ST is in San Francisco, California 94111. Its coordinates are 37.80119, -122.40106 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
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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, “55 UNION ST, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/55-union-st-02cce62d (data as of October 2, 2026).