505 Sansome
Commercial in San Francisco, CA · 505 SANSOME ST · 94111
At a glance
505 Sansome is a 218,396-square-foot commercial building at 505 SANSOME ST in San Francisco, California, built in 1981. In its 2025 San Francisco benchmarking disclosure it reported a site energy-use intensity of 38.3 kBtu/ft² and 472 tCO₂e of greenhouse-gas emissions.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 38.3 kBtu/ft² |
| Source EUI | 94.5 kBtu/ft² |
| GHG emissions | 472 tCO₂e |
| GHG intensity | 2.2 kgCO₂e/ft² |
| Electricity | 1,985,884 kWh |
| Natural gas | 15,887 therms |
| Gross floor area | 218,396 sq ft |
| Source record | sf:0207/037:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 38.3 kBtu/ft² | 472 tCO₂e | |
| 2024 | — | 20.0 kBtu/ft² | 279 tCO₂e | |
| 2023 | — | 22.3 kBtu/ft² | 328 tCO₂e | |
| 2022 | 94 | +2 | 24.7 kBtu/ft² | 354 tCO₂e |
| 2021 | 92 | 26.5 kBtu/ft² | 341 tCO₂e | |
| 2020 | — | 31.6 kBtu/ft² | 446 tCO₂e | |
| 2019 | 89 | +3 | 35.0 kBtu/ft² | 523 tCO₂e |
| 2018 | 86 | -10 | 38.7 kBtu/ft² | 573 tCO₂e |
| 2017 | 96 | ±0 | 36.9 kBtu/ft² | 584 tCO₂e |
| 2016 | 96 | -1 | 35.9 kBtu/ft² | 654 tCO₂e |
| 2015 | 97 | +2 | 35.7 kBtu/ft² | 613 tCO₂e |
| 2014 | 95 | +1 | 37.4 kBtu/ft² | 651 tCO₂e |
| 2013 | 94 | +1 | 41.2 kBtu/ft² | 759 tCO₂e |
| 2012 | 93 | +4 | 42.3 kBtu/ft² | 803 tCO₂e |
| 2011 | 89 | 48.2 kBtu/ft² | 909 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
- 505 SANSOME ST
- City
- San Francisco
- State
- California
- ZIP
- 94111
- Coordinates
- 37.79507, -122.40182
Within ~1 km
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- 555 California Streetscore 76
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See also: most efficient in San Francisco · biggest emitters
How does 505 Sansome 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 38.3 kBtu/ft² is about 22% 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 2.2 kgCO₂e/ft² is about 20% below the group average of 2.7 kgCO₂e/ft².
At 218,396 sq ft, it is about twice the average floor area of 107,408 sq ft for those buildings. It was built in 1981, 40 years later 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 505 Sansome's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for 505 Sansome, covering report years 2011–2025. Its ENERGY STAR score went from 89 in 2011 to 94 in 2022 (+5 points); its best year on file was 2015, at 97. Site EUI moved from 48.2 kBtu/ft² (2011) to 38.3 kBtu/ft² (2025), a 21% decrease. Reported emissions went from 909 tCO₂e to 472 tCO₂e over the same span (down 48%).
What does a site EUI of 38.3 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. 505 Sansome's 38.3 kBtu/ft² across 218,396 sq ft works out to about 8.4 billion Btu (2,451 MWh-equivalent) in 2025. Its source EUI of 94.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,985,884 kWh of electricity and 15,887 therms of natural gas for the year.
Which law requires 505 Sansome to report its energy use?
505 Sansome 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:0207/037:2025). 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
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- Commercial buildings in San Francisco· 1,683 benchmarked
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Frequently asked questions
What is 505 Sansome's energy grade?
505 Sansome did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 38.3 kBtu/ft².
How much energy does 505 Sansome use?
Its 2025 site energy-use intensity was 38.3 kBtu/ft² (94.5 kBtu/ft² source) across 218,396 sq ft, including 1,985,884 kWh of electricity and 15,887 therms of natural gas.
What are 505 Sansome's carbon emissions?
505 Sansome reported 472 tCO₂e of greenhouse-gas emissions (2.2 kgCO₂e/ft²) for 2025.
Where is 505 Sansome?
505 Sansome is at 505 SANSOME ST, in San Francisco, California 94111. Its coordinates are 37.79507, -122.40182 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is 505 Sansome and when was it built?
505 Sansome has 218,396 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1981 as its year built. It is classed as commercial.
Is 505 Sansome 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, “505 Sansome, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/505-sansome-113dedd3 (data as of October 2, 2026).