Columbus Tower
Commercial in San Francisco, CA · 900 KEARNY ST · 94133
At a glance
Columbus Tower is a 35,730-square-foot commercial building at 900 KEARNY ST in San Francisco, California, built in 1989. In its 2025 San Francisco benchmarking disclosure it reported an ENERGY STAR score of 49 out of 100 (grade D), a site energy-use intensity of 45.8 kBtu/ft² and 91 tCO₂e of greenhouse-gas emissions. That score is higher than 11% of the 790 scored commercial buildings in San Francisco.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 49 (band D) |
| Site EUI | 45.8 kBtu/ft² |
| Source EUI | 101.7 kBtu/ft² |
| GHG emissions | 91 tCO₂e |
| GHG intensity | 2.6 kgCO₂e/ft² |
| Electricity | 321,040 kWh |
| Natural gas | 5,403 therms |
| Gross floor area | 35,730 sq ft |
| Source record | sf:0176/011:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 49 | -6 | 45.8 kBtu/ft² | 91 tCO₂e |
| 2024 | 55 | 43.4 kBtu/ft² | 96 tCO₂e | |
| 2023 | — | 39.3 kBtu/ft² | 86 tCO₂e | |
| 2022 | — | 36.3 kBtu/ft² | 84 tCO₂e | |
| 2021 | — | 40.8 kBtu/ft² | 86 tCO₂e | |
| 2020 | — | 43.4 kBtu/ft² | 101 tCO₂e | |
| 2019 | — | — | — | |
| 2018 | — | — | — | |
| 2017 | — | — | — | |
| 2016 | 43 | +9 | 52.3 kBtu/ft² | 136 tCO₂e |
| 2015 | 34 | -3 | 58.7 kBtu/ft² | 144 tCO₂e |
| 2014 | 37 | -4 | 58.9 kBtu/ft² | 141 tCO₂e |
| 2013 | 41 | -9 | 64.1 kBtu/ft² | 155 tCO₂e |
| 2012 | 50 | 58.1 kBtu/ft² | 142 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
- 900 KEARNY ST
- City
- San Francisco
- State
- California
- ZIP
- 94133
- Coordinates
- 37.79639, -122.40491
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
How does Columbus Tower 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. Columbus Tower's ENERGY STAR score of 49 compares with an average of 78 across the 790 that report a score; it scores higher than 11% of them and lower than 88%. Its site EUI of 45.8 kBtu/ft² is roughly in line with the average of 49.2 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.6 kgCO₂e/ft² is roughly in line with the group average of 2.7 kgCO₂e/ft².
At 35,730 sq ft, it is about 67% below the average floor area of 107,408 sq ft for those buildings. It was built in 1989, 48 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 Columbus Tower's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for Columbus Tower, covering report years 2011–2025. Its ENERGY STAR score went from 50 in 2012 to 49 in 2025 (-1 points); its best year on file was 2024, at 55. Site EUI moved from 58.1 kBtu/ft² (2012) to 45.8 kBtu/ft² (2025), a 21% decrease. Reported emissions went from 142 tCO₂e to 91 tCO₂e over the same span (down 35%).
What does an ENERGY STAR score of 49 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 49 means the building performs better than about 49% of its national peers. BuildingCensus bands the score into report-card grades; 49 falls in band D — lowest band (1–54). It sits 26 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. Columbus Tower's 45.8 kBtu/ft² across 35,730 sq ft works out to about 1.6 billion Btu (480 MWh-equivalent) in 2025. Its source EUI of 101.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 321,040 kWh of electricity and 5,403 therms of natural gas for the year.
Which law requires Columbus Tower to report its energy use?
Columbus Tower 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:0176/011:2025). 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
- 735 Montgomery St· 35,715 sq ft
- 1595 Van Ness· 35,700 sq ft
- 290 DIVISION ST· 35,628 sq ft · EUI 28.9 kBtu/ft²
- 2150 Oakdale Ave· 35,612 sq ft · EUI 6.1 kBtu/ft²
- 295 BAY ST· 35,590 sq ft
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- 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 Columbus Tower's energy grade?
Columbus Tower scores 49 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 Columbus Tower use?
Its 2025 site energy-use intensity was 45.8 kBtu/ft² (101.7 kBtu/ft² source) across 35,730 sq ft, including 321,040 kWh of electricity and 5,403 therms of natural gas.
What are Columbus Tower's carbon emissions?
Columbus Tower reported 91 tCO₂e of greenhouse-gas emissions (2.6 kgCO₂e/ft²) for 2025.
Where is Columbus Tower?
Columbus Tower is at 900 KEARNY ST, in San Francisco, California 94133. Its coordinates are 37.79639, -122.40491 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is Columbus Tower and when was it built?
Columbus Tower has 35,730 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1989 as its year built. It is classed as commercial.
Is Columbus Tower 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, “Columbus Tower, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/columbus-tower-085c360e (data as of October 2, 2026).