343 Sansome
Commercial in San Francisco, CA · 343 SANSOME ST · 94104
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 26.0 kBtu/ft² |
| Source EUI | 72.8 kBtu/ft² |
| GHG emissions | 410 tCO₂e |
| GHG intensity | 1.5 kgCO₂e/ft² |
| Electricity | 2,102,698 kWh |
| Gross floor area | 320,421 sq ft |
| Source record | sf:0239/030:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 26.0 kBtu/ft² | 410 tCO₂e | |
| 2024 | — | 23.5 kBtu/ft² | 431 tCO₂e | |
| 2023 | — | 24.6 kBtu/ft² | 482 tCO₂e | |
| 2022 | — | 28.1 kBtu/ft² | 532 tCO₂e | |
| 2021 | 89 | 26.7 kBtu/ft² | 445 tCO₂e | |
| 2020 | — | 29.2 kBtu/ft² | 535 tCO₂e | |
| 2019 | 88 | -6 | 37.8 kBtu/ft² | 735 tCO₂e |
| 2018 | 94 | -1 | 36.1 kBtu/ft² | 691 tCO₂e |
| 2017 | 95 | -3 | 38.3 kBtu/ft² | 789 tCO₂e |
| 2016 | 98 | +1 | 35.6 kBtu/ft² | 841 tCO₂e |
| 2015 | 97 | +3 | 36.6 kBtu/ft² | 813 tCO₂e |
| 2014 | 94 | +4 | 39.2 kBtu/ft² | 869 tCO₂e |
| 2013 | 90 | -1 | 47.5 kBtu/ft² | 1,053 tCO₂e |
| 2012 | 91 | 46.6 kBtu/ft² | 1,034 tCO₂e | |
| 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
- 343 SANSOME ST
- City
- San Francisco
- State
- California
- ZIP
- 94104
- Coordinates
- 37.79369, -122.40172
Within ~1 km
Nearby benchmarked buildings
- 555 Californiascore 75
Commercial · 1,968,807 sq ft
- PGE-GO Complexscore —
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- One Market Plazascore 80
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- One Market Plazascore 79
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- 555 California Streetscore 76
Office · 1,810,397 sq ft
- 500 BATTERY STscore —
Mixed Residential · 1,779,579 sq ft
See also: most efficient in San Francisco · biggest emitters
Frequently asked questions
What is 343 Sansome's energy grade?
343 Sansome did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 26.0 kBtu/ft².
How much energy does 343 Sansome use?
Its 2025 site energy-use intensity was 26.0 kBtu/ft² (72.8 kBtu/ft² source) across 320,421 sq ft, including 2,102,698 kWh of electricity.
What are 343 Sansome's carbon emissions?
343 Sansome reported 410 tCO₂e of greenhouse-gas emissions (1.5 kgCO₂e/ft²) for 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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Dataset updated . Source: Existing Buildings Energy Performance Ordinance disclosure, record sf:0239/030:2025.