Golden Gate Apartments
Mixed Residential in San Francisco, CA · 1820 POST ST · 94115
At a glance
Golden Gate Apartments is a 79,716-square-foot mixed residential building at 1820 POST ST in San Francisco, California, built in 1978. 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 18.6 kBtu/ft² and 84 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 | 18.6 kBtu/ft² |
| Source EUI | 45.8 kBtu/ft² |
| GHG emissions | 84 tCO₂e |
| GHG intensity | 1.1 kgCO₂e/ft² |
| Electricity | 350,134 kWh |
| Natural gas | 2,910 therms |
| Gross floor area | 79,716 sq ft |
| Source record | sf:0684/045:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 100 | +2 | 18.6 kBtu/ft² | 84 tCO₂e |
| 2024 | 98 | ±0 | 31.1 kBtu/ft² | 144 tCO₂e |
| 2023 | 98 | ±0 | 36.0 kBtu/ft² | 156 tCO₂e |
| 2022 | 98 | 37.2 kBtu/ft² | 159 tCO₂e | |
| 2021 | — | 40.5 kBtu/ft² | 166 tCO₂e | |
| 2020 | — | 43.4 kBtu/ft² | 183 tCO₂e | |
| 2019 | 95 | 40.8 kBtu/ft² | 172 tCO₂e | |
| 2018 | — | — | — |
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
- 1820 POST ST
- City
- San Francisco
- State
- California
- ZIP
- 94115
- Coordinates
- 37.78573, -122.43218
Within ~1 km
Nearby benchmarked buildings
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- Freedom Westscore 92
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- Fillmore Centerscore 85
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- 66 CLEARY CTscore 96
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See also: most efficient in San Francisco · biggest emitters
How does Golden Gate Apartments 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. Golden Gate Apartments'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 18.6 kBtu/ft² is about half of 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 half of the group average of 2.0 kgCO₂e/ft².
At 79,716 sq ft, it is about half of the average floor area of 165,572 sq ft for those buildings. It was built in 1978, 12 years later than the group's average year built (1967).
How has Golden Gate Apartments's energy performance changed over time?
BuildingCensus holds 8 San Francisco disclosures for Golden Gate Apartments, covering report years 2018–2025. Its ENERGY STAR score went from 95 in 2019 to 100 in 2025 (+5 points). Site EUI moved from 40.8 kBtu/ft² (2019) to 18.6 kBtu/ft² (2025), a 54% decrease. Reported emissions went from 172 tCO₂e to 84 tCO₂e over the same span (down 51%).
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. Golden Gate Apartments's 18.6 kBtu/ft² across 79,716 sq ft works out to about 1.5 billion Btu (435 MWh-equivalent) in 2025. Its source EUI of 45.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 350,134 kWh of electricity and 2,910 therms of natural gas for the year.
Which law requires Golden Gate Apartments to report its energy use?
Golden Gate Apartments 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:0684/045:2025). 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
- Mission Plaza Apartments - Capp· 79,543 sq ft · EUI 17.3 kBtu/ft²
- 83 MCALLISTER ST· 79,499 sq ft
- 690 PENNSYLVANIA AVE· 79,434 sq ft · score 97 (A)
- Church Street Apartments· 79,295 sq ft
- Worldmark at San Francisco· 79,086 sq ft · score 100 (A)
- 1400 GRANT AVE· 78,964 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 Golden Gate Apartments's energy grade?
Golden Gate Apartments 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 Golden Gate Apartments use?
Its 2025 site energy-use intensity was 18.6 kBtu/ft² (45.8 kBtu/ft² source) across 79,716 sq ft, including 350,134 kWh of electricity and 2,910 therms of natural gas.
What are Golden Gate Apartments's carbon emissions?
Golden Gate Apartments reported 84 tCO₂e of greenhouse-gas emissions (1.1 kgCO₂e/ft²) for 2025.
Where is Golden Gate Apartments?
Golden Gate Apartments is at 1820 POST ST, in San Francisco, California 94115. Its coordinates are 37.78573, -122.43218 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is Golden Gate Apartments and when was it built?
Golden Gate Apartments has 79,716 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1978 as its year built. It is classed as mixed residential.
Is Golden Gate Apartments 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, “Golden Gate Apartments, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/golden-gate-apartments-f5e5fe1e (data as of October 2, 2026).