43 Page St
Commercial in San Francisco, CA · 43 Page St, San Francisco, CA · 94102
At a glance
43 Page St is a 38,753-square-foot commercial building at 43 Page St, San Francisco, CA in San Francisco, California, built in 1911. In its 2025 San Francisco benchmarking disclosure it reported a site energy-use intensity of 2.7 kBtu/ft² and 6 tCO₂e of greenhouse-gas emissions.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 2.7 kBtu/ft² |
| Source EUI | 7.6 kBtu/ft² |
| GHG emissions | 6 tCO₂e |
| GHG intensity | 0.2 kgCO₂e/ft² |
| Electricity | 30,880 kWh |
| Gross floor area | 38,753 sq ft |
| Source record | sf:0854/002:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 2.7 kBtu/ft² | 6 tCO₂e | |
| 2024 | — | 3.3 kBtu/ft² | 9 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
- 43 Page St, San Francisco, CA
- City
- San Francisco
- State
- California
- ZIP
- 94102
- Coordinates
- 37.77397, -122.42134
Within ~1 km
Nearby benchmarked buildings
- 1455 Market Streetscore —
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- 1455 Market Streetscore 92
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- NEMA SFscore 100
Multifamily · 1,044,955 sq ft
- Nema Apartmentsscore 99
Multifamily Housing · 951,676 sq ft
- 33 8TH STscore 100
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See also: most efficient in San Francisco · biggest emitters
How does 43 Page St 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. Its site EUI of 2.7 kBtu/ft² is about 95% below 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 0.2 kgCO₂e/ft² is about 94% below the group average of 2.7 kgCO₂e/ft².
At 38,753 sq ft, it is about 64% below the average floor area of 107,408 sq ft for those buildings. It was built in 1911, 30 years earlier 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 43 Page St's energy performance changed over time?
BuildingCensus holds 2 San Francisco disclosures for 43 Page St, covering report years 2024–2025. Site EUI moved from 3.3 kBtu/ft² (2024) to 2.7 kBtu/ft² (2025), a 18% decrease. Reported emissions went from 9 tCO₂e to 6 tCO₂e over the same span (down 29%).
What does a site EUI of 2.7 kBtu/ft² mean?
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. 43 Page St's 2.7 kBtu/ft² across 38,753 sq ft works out to about 0.1 billion Btu (31 MWh-equivalent) in 2025. Its source EUI of 7.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 30,880 kWh of electricity for the year.
Which law requires 43 Page St to report its energy use?
43 Page 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:0854/002:2025). 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
- 16 California Street (8 Cal)· 38,597 sq ft · score 77 (B)
- 950 TENNESSEE ST· 38,500 sq ft
- 246 POST ST· 38,475 sq ft · EUI 53.2 kBtu/ft²
- 1301 Sansome Street· 38,440 sq ft · score 77 (B)
- 220 POST ST· 38,400 sq ft
- 2901 CALIFORNIA ST· 38,353 sq ft
- 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 43 Page St's energy grade?
43 Page St did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 2.7 kBtu/ft².
How much energy does 43 Page St use?
Its 2025 site energy-use intensity was 2.7 kBtu/ft² (7.6 kBtu/ft² source) across 38,753 sq ft, including 30,880 kWh of electricity.
What are 43 Page St's carbon emissions?
43 Page St reported 6 tCO₂e of greenhouse-gas emissions (0.2 kgCO₂e/ft²) for 2025.
Where is 43 Page St?
43 Page St is at 43 Page St, San Francisco, CA, in San Francisco, California 94102. Its coordinates are 37.77397, -122.42134 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is 43 Page St and when was it built?
43 Page St has 38,753 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1911 as its year built. It is classed as commercial.
Is 43 Page 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, “43 Page St, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/43-page-st-e144ba07 (data as of October 2, 2026).