Columbia Park
Mixed Residential in San Francisco, CA · 21 COLUMBIA SQUARE ST · 94103
At a glance
Columbia Park is a 100,310-square-foot mixed residential building at 21 COLUMBIA SQUARE ST in San Francisco, California, built in 1994. In its 2025 San Francisco benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 23.6 kBtu/ft² and 87 tCO₂e of greenhouse-gas emissions. That score is higher than 69% 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 | 100 (band A) |
| Site EUI | 23.6 kBtu/ft² |
| Source EUI | 42.2 kBtu/ft² |
| GHG emissions | 87 tCO₂e |
| GHG intensity | 1.1 kgCO₂e/ft² |
| Electricity | 225,912 kWh |
| Natural gas | 8,003 therms |
| Gross floor area | 100,310 sq ft |
| Source record | sf:3754/058:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 100 | ±0 | 23.6 kBtu/ft² | 87 tCO₂e |
| 2024 | 100 | ±0 | 22.2 kBtu/ft² | 90 tCO₂e |
| 2023 | 100 | ±0 | — | — |
| 2022 | 100 | 24.9 kBtu/ft² | 100 tCO₂e | |
| 2021 | — | 26.1 kBtu/ft² | 99 tCO₂e | |
| 2020 | — | 23.1 kBtu/ft² | 105 tCO₂e | |
| 2019 | 100 | ±0 | 26.6 kBtu/ft² | 106 tCO₂e |
| 2018 | 100 | 25.5 kBtu/ft² | 104 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
- 21 COLUMBIA SQUARE ST
- City
- San Francisco
- State
- California
- ZIP
- 94103
- Coordinates
- 37.77774, -122.40590
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
How does Columbia Park 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. Columbia Park's ENERGY STAR score of 100 compares with an average of 85 across the 340 that report a score; it scores higher than 69% of them. Its site EUI of 23.6 kBtu/ft² is about 34% below the average of 36.0 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.1 kgCO₂e/ft² is about 44% below the group average of 2.0 kgCO₂e/ft².
At 100,310 sq ft, it is about 39% below the average floor area of 165,572 sq ft for those buildings. It was built in 1994, 28 years later than the group's average year built (1967).
How has Columbia Park's energy performance changed over time?
BuildingCensus holds 8 San Francisco disclosures for Columbia Park, covering report years 2018–2025. Its ENERGY STAR score was 100 in both 2018 and 2025. Site EUI moved from 25.5 kBtu/ft² (2018) to 23.6 kBtu/ft² (2025), a 7% decrease. Reported emissions went from 104 tCO₂e to 87 tCO₂e over the same span (down 17%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. Columbia Park's 23.6 kBtu/ft² across 100,310 sq ft works out to about 2.4 billion Btu (694 MWh-equivalent) in 2025. Its source EUI of 42.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 225,912 kWh of electricity and 8,003 therms of natural gas for the year.
Which law requires Columbia Park to report its energy use?
Columbia Park 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:3754/058:2025). 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
- 1466 POWELL ST· 100,225 sq ft
- 2000 03RD ST· 100,190 sq ft · score 97 (A)
- 645 BUSH ST· 100,043 sq ft
- 220 CASHMERE ST· 100,037 sq ft · score 90 (A)
- Carter Terrace· 100,000 sq ft · score 99 (A)
- 1650 JACKSON ST· 99,859 sq ft
- 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 Columbia Park's energy grade?
Columbia Park scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2025 San Francisco disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Columbia Park use?
Its 2025 site energy-use intensity was 23.6 kBtu/ft² (42.2 kBtu/ft² source) across 100,310 sq ft, including 225,912 kWh of electricity and 8,003 therms of natural gas.
What are Columbia Park's carbon emissions?
Columbia Park reported 87 tCO₂e of greenhouse-gas emissions (1.1 kgCO₂e/ft²) for 2025.
Where is Columbia Park?
Columbia Park is at 21 COLUMBIA SQUARE ST, in San Francisco, California 94103. Its coordinates are 37.77774, -122.40590 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is Columbia Park and when was it built?
Columbia Park has 100,310 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1994 as its year built. It is classed as mixed residential.
Is Columbia Park 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, “Columbia Park, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/columbia-park-b638db22 (data as of October 2, 2026).