1091 BUSH ST
Mixed Residential in San Francisco, CA · 94109
At a glance
1091 BUSH ST is a 63,852-square-foot mixed residential building in San Francisco, California, built in 1910. In its 2025 San Francisco benchmarking disclosure it reported an ENERGY STAR score of 95 out of 100 (grade A), a site energy-use intensity of 51.1 kBtu/ft² and 176 tCO₂e of greenhouse-gas emissions. That score is higher than 46% 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 | 95 (band A) |
| Site EUI | 51.1 kBtu/ft² |
| Source EUI | 69.1 kBtu/ft² |
| GHG emissions | 176 tCO₂e |
| GHG intensity | 2.8 kgCO₂e/ft² |
| Electricity | 164,769 kWh |
| Natural gas | 27,018 therms |
| Gross floor area | 63,852 sq ft |
| Source record | sf:0281/013:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 95 | -1 | 51.1 kBtu/ft² | 176 tCO₂e |
| 2024 | 96 | ±0 | 49.0 kBtu/ft² | 174 tCO₂e |
| 2023 | 96 | +1 | 51.0 kBtu/ft² | 183 tCO₂e |
| 2022 | 95 | -2 | 52.2 kBtu/ft² | 187 tCO₂e |
| 2021 | 97 | 48.7 kBtu/ft² | 169 tCO₂e | |
| 2020 | — | 48.2 kBtu/ft² | 167 tCO₂e | |
| 2019 | — | — | — | |
| 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
- 1091 BUSH ST
- City
- San Francisco
- State
- California
- ZIP
- 94109
- Coordinates
- 37.78908, -122.41504
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
How does 1091 BUSH ST 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. 1091 BUSH ST's ENERGY STAR score of 95 compares with an average of 85 across the 340 that report a score; it scores higher than 46% of them and lower than 52%. Its site EUI of 51.1 kBtu/ft² is about 42% above the average of 36.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 2.8 kgCO₂e/ft² is about 38% above the group average of 2.0 kgCO₂e/ft².
At 63,852 sq ft, it is about 61% below the average floor area of 165,572 sq ft for those buildings. It was built in 1910, 56 years earlier than the group's average year built (1967).
How has 1091 BUSH ST's energy performance changed over time?
BuildingCensus holds 8 San Francisco disclosures for 1091 BUSH ST, covering report years 2018–2025. Its ENERGY STAR score went from 97 in 2021 to 95 in 2025 (-2 points); its best year on file was 2021, at 97. Site EUI moved from 48.2 kBtu/ft² (2020) to 51.1 kBtu/ft² (2025), an 6% increase. Reported emissions went from 167 tCO₂e to 176 tCO₂e over the same span (up 5%).
What does an ENERGY STAR score of 95 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 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 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. 1091 BUSH ST's 51.1 kBtu/ft² across 63,852 sq ft works out to about 3.3 billion Btu (956 MWh-equivalent) in 2025. Its source EUI of 69.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 164,769 kWh of electricity and 27,018 therms of natural gas for the year.
Which law requires 1091 BUSH ST to report its energy use?
1091 BUSH 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:0281/013:2025). 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
- 925 CORBETT AVE· 63,773 sq ft
- 1990 GREEN ST· 63,732 sq ft · score 22 (D)
- Plaza (988 Howard)· 63,501 sq ft · score 42 (D)
- 140 ELLIS ST· 63,450 sq ft
- 1230 CLAY ST· 63,337 sq ft · score 95 (A)
- 81 LANSING ST· 63,299 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 1091 BUSH ST's energy grade?
1091 BUSH ST scores 95 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 1091 BUSH ST use?
Its 2025 site energy-use intensity was 51.1 kBtu/ft² (69.1 kBtu/ft² source) across 63,852 sq ft, including 164,769 kWh of electricity and 27,018 therms of natural gas.
What are 1091 BUSH ST's carbon emissions?
1091 BUSH ST reported 176 tCO₂e of greenhouse-gas emissions (2.8 kgCO₂e/ft²) for 2025.
Where is 1091 BUSH ST?
1091 BUSH ST is in San Francisco, California 94109. Its coordinates are 37.78908, -122.41504 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is 1091 BUSH ST and when was it built?
1091 BUSH ST has 63,852 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1910 as its year built. It is classed as mixed residential.
Is 1091 BUSH ST 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, “1091 BUSH ST, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/1091-bush-st-722ec401 (data as of October 2, 2026).