401 SANSOME ST
Commercial in San Francisco, CA · 94111
At a glance
401 SANSOME ST is a 11,740-square-foot commercial building in San Francisco, California, built in 1906. In its 2025 San Francisco benchmarking disclosure it reported a site energy-use intensity of 35.1 kBtu/ft² and 24 tCO₂e of greenhouse-gas emissions.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 35.1 kBtu/ft² |
| Source EUI | 98.4 kBtu/ft² |
| GHG emissions | 24 tCO₂e |
| GHG intensity | 2.0 kgCO₂e/ft² |
| Electricity | 120,885 kWh |
| Natural gas | 0 therms |
| Gross floor area | 11,740 sq ft |
| Source record | sf:0228/004:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 35.1 kBtu/ft² | 24 tCO₂e | |
| 2024 | — | 34.9 kBtu/ft² | 27 tCO₂e | |
| 2023 | — | 32.9 kBtu/ft² | 27 tCO₂e | |
| 2022 | — | 33.5 kBtu/ft² | 27 tCO₂e | |
| 2021 | — | 28.8 kBtu/ft² | 20 tCO₂e | |
| 2020 | — | 30.5 kBtu/ft² | 22 tCO₂e | |
| 2019 | — | 111.4 kBtu/ft² | 77 tCO₂e | |
| 2018 | — | 97.2 kBtu/ft² | 69 tCO₂e | |
| 2017 | — | 56.6 kBtu/ft² | 47 tCO₂e | |
| 2016 | — | 87.8 kBtu/ft² | 72 tCO₂e | |
| 2015 | — | 139.8 kBtu/ft² | 102 tCO₂e | |
| 2014 | 97 | -3 | 29.9 kBtu/ft² | 20 tCO₂e |
| 2013 | 100 | 25.1 kBtu/ft² | 17 tCO₂e | |
| 2012 | — | — | — | |
| 2011 | — | — | — |
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
- 401 SANSOME ST
- City
- San Francisco
- State
- California
- ZIP
- 94111
- Coordinates
- 37.79406, -122.40163
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
How does 401 SANSOME 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 35.1 kBtu/ft² is about 29% 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 2.0 kgCO₂e/ft² is about 26% below the group average of 2.7 kgCO₂e/ft².
At 11,740 sq ft, it is about 89% below the average floor area of 107,408 sq ft for those buildings. It was built in 1906, 35 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 401 SANSOME ST's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for 401 SANSOME ST, covering report years 2011–2025. Its ENERGY STAR score went from 100 in 2013 to 97 in 2014 (-3 points); its best year on file was 2013, at 100. Site EUI moved from 25.1 kBtu/ft² (2013) to 35.1 kBtu/ft² (2025), an 40% increase. Reported emissions went from 17 tCO₂e to 24 tCO₂e over the same span (up 42%).
What does a site EUI of 35.1 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. 401 SANSOME ST's 35.1 kBtu/ft² across 11,740 sq ft works out to about 0.4 billion Btu (121 MWh-equivalent) in 2025. Its source EUI of 98.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 120,885 kWh of electricity and 0 therms of natural gas for the year.
Which law requires 401 SANSOME ST to report its energy use?
401 SANSOME 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:0228/004:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
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Frequently asked questions
What is 401 SANSOME ST's energy grade?
401 SANSOME ST did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 35.1 kBtu/ft².
How much energy does 401 SANSOME ST use?
Its 2025 site energy-use intensity was 35.1 kBtu/ft² (98.4 kBtu/ft² source) across 11,740 sq ft, including 120,885 kWh of electricity and 0 therms of natural gas.
What are 401 SANSOME ST's carbon emissions?
401 SANSOME ST reported 24 tCO₂e of greenhouse-gas emissions (2.0 kgCO₂e/ft²) for 2025.
Where is 401 SANSOME ST?
401 SANSOME ST is in San Francisco, California 94111. Its coordinates are 37.79406, -122.40163 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is 401 SANSOME ST and when was it built?
401 SANSOME ST has 11,740 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1906 as its year built. It is classed as commercial.
Is 401 SANSOME 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, “401 SANSOME ST, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/401-sansome-st-85463247 (data as of October 2, 2026).