1050 Sansome Street
Commercial in San Francisco, CA · 1050 SANSOME ST · 94111
At a glance
1050 Sansome Street is a 35,000-square-foot commercial building at 1050 SANSOME ST in San Francisco, California, built in 1906. In its 2025 San Francisco benchmarking disclosure it reported a site energy-use intensity of 24.4 kBtu/ft² and 49 tCO₂e of greenhouse-gas emissions.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 24.4 kBtu/ft² |
| Source EUI | 68.3 kBtu/ft² |
| GHG emissions | 49 tCO₂e |
| GHG intensity | 1.4 kgCO₂e/ft² |
| Electricity | 250,116 kWh |
| Gross floor area | 35,000 sq ft |
| Source record | sf:0135/008:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 24.4 kBtu/ft² | 49 tCO₂e | |
| 2024 | — | 33.5 kBtu/ft² | 78 tCO₂e | |
| 2023 | — | 23.4 kBtu/ft² | 58 tCO₂e | |
| 2022 | — | 27.3 kBtu/ft² | 66 tCO₂e | |
| 2021 | — | 27.4 kBtu/ft² | 58 tCO₂e | |
| 2020 | — | 30.0 kBtu/ft² | 64 tCO₂e | |
| 2019 | — | — | — | |
| 2018 | — | — | — | |
| 2017 | — | 31.7 kBtu/ft² | 78 tCO₂e | |
| 2016 | — | 32.8 kBtu/ft² | 100 tCO₂e | |
| 2015 | — | — | — | |
| 2014 | — | — | — | |
| 2013 | — | — | — | |
| 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
- 1050 SANSOME ST
- City
- San Francisco
- State
- California
- ZIP
- 94111
- Coordinates
- 37.79991, -122.40216
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
How does 1050 Sansome Street 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 24.4 kBtu/ft² is about half of 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 1.4 kgCO₂e/ft² is about half of the group average of 2.7 kgCO₂e/ft².
At 35,000 sq ft, it is about 67% 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 1050 Sansome Street's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for 1050 Sansome Street, covering report years 2011–2025. Site EUI moved from 32.8 kBtu/ft² (2016) to 24.4 kBtu/ft² (2025), a 26% decrease. Reported emissions went from 100 tCO₂e to 49 tCO₂e over the same span (down 51%).
What does a site EUI of 24.4 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. 1050 Sansome Street's 24.4 kBtu/ft² across 35,000 sq ft works out to about 0.9 billion Btu (250 MWh-equivalent) in 2025. Its source EUI of 68.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 250,116 kWh of electricity for the year.
Which law requires 1050 Sansome Street to report its energy use?
1050 Sansome Street 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:0135/008:2025). 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 1050 Sansome Street's energy grade?
1050 Sansome Street did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 24.4 kBtu/ft².
How much energy does 1050 Sansome Street use?
Its 2025 site energy-use intensity was 24.4 kBtu/ft² (68.3 kBtu/ft² source) across 35,000 sq ft, including 250,116 kWh of electricity.
What are 1050 Sansome Street's carbon emissions?
1050 Sansome Street reported 49 tCO₂e of greenhouse-gas emissions (1.4 kgCO₂e/ft²) for 2025.
Where is 1050 Sansome Street?
1050 Sansome Street is at 1050 SANSOME ST, in San Francisco, California 94111. Its coordinates are 37.79991, -122.40216 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is 1050 Sansome Street and when was it built?
1050 Sansome Street has 35,000 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 1050 Sansome Street 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, “1050 Sansome Street, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/1050-sansome-street-1d362315 (data as of October 2, 2026).