Columbia Park Apartments
Multifamily Housing in California, CA · 21 Columbia Square, San Francisco · 94103
At a glance
Columbia Park Apartments is a 76,610-square-foot multifamily housing building at 21 Columbia Square, San Francisco in San Francisco, California, built in 1995. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 22.1 kBtu/ft² and 90 tCO₂e of greenhouse-gas emissions. That score is higher than 76% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 22.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 90 tCO₂e |
| GHG intensity | 1.2 kgCO₂e/ft² |
| Electricity | 215,720 kWh |
| Natural gas | 7,834 therms |
| Gross floor area | 76,610 sq ft |
| Source record | california:4274882:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 22.1 kBtu/ft² | 90 tCO₂e |
| 2023 | 100 | ±0 | 23.6 kBtu/ft² | 99 tCO₂e |
| 2022 | 100 | ±0 | 24.8 kBtu/ft² | 100 tCO₂e |
| 2021 | 100 | ±0 | 26.4 kBtu/ft² | 99 tCO₂e |
| 2020 | 100 | ±0 | 23.3 kBtu/ft² | 105 tCO₂e |
| 2019 | 100 | 26.6 kBtu/ft² | 106 tCO₂e |
Compliance context
AB 802 (Public Resources Code §25402.10)
AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
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, San Francisco
- City
- California
- State
- California
- ZIP
- 94103
- Coordinates
- 37.77775, -122.40618
Within ~1 km
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How does Columbia Park Apartments compare with other multifamily housing buildings in California?
The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. Columbia Park Apartments's ENERGY STAR score of 100 compares with an average of 82 across the 9,612 that report a score; it scores higher than 76% of them. Its site EUI of 22.1 kBtu/ft² is about 36% below the average of 34.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.2 kgCO₂e/ft² is about 44% below the group average of 2.1 kgCO₂e/ft².
At 76,610 sq ft, it is about half of the average floor area of 150,919 sq ft for those buildings. It was built in 1995, 7 years later than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Columbia Park Apartments's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Columbia Park Apartments, covering report years 2019–2024. Its ENERGY STAR score was 100 in both 2019 and 2024. Site EUI moved from 26.6 kBtu/ft² (2019) to 22.1 kBtu/ft² (2024), a 17% decrease. Reported emissions went from 106 tCO₂e to 90 tCO₂e over the same span (down 15%).
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 California, 65% 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 Apartments's 22.1 kBtu/ft² across 76,610 sq ft works out to about 1.7 billion Btu (496 MWh-equivalent) in 2024. The disclosure also reports 215,720 kWh of electricity and 7,834 therms of natural gas for the year.
Which law requires Columbia Park Apartments to report its energy use?
Columbia Park Apartments reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record california:4274882:2024). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
More multifamily housing buildings in California
- Ambassador: Ambassador· 76,609 sq ft · score 86 (A)
- 300 Buchanan St· 76,608 sq ft · score 1 (D)
- Country Club (Cn114)· 76,604 sq ft · score 100 (A)
- 480 Potrero· 76,600 sq ft · score 92 (A)
- Park Meadows Apartments· 76,596 sq ft · score 100 (A)
- Village Green· 76,582 sq ft · score 49 (D)
- Multifamily Housing buildings in California· 10,630 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is Columbia Park Apartments's energy grade?
Columbia Park Apartments scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Columbia Park Apartments use?
Its 2024 site energy-use intensity was 22.1 kBtu/ft² across 76,610 sq ft, including 215,720 kWh of electricity and 7,834 therms of natural gas.
What are Columbia Park Apartments's carbon emissions?
Columbia Park Apartments reported 90 tCO₂e of greenhouse-gas emissions (1.2 kgCO₂e/ft²) for 2024.
Where is Columbia Park Apartments?
Columbia Park Apartments is at 21 Columbia Square, San Francisco, in San Francisco, California 94103. Its coordinates are 37.77775, -122.40618 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Columbia Park Apartments and when was it built?
Columbia Park Apartments has 76,610 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1995 as its year built. It is classed as multifamily housing.
Is Columbia Park Apartments covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
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About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Columbia Park Apartments, San Francisco, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/columbia-park-apartments-f43f12e0 (data as of July 9, 2026).