660 Third
Commercial in San Francisco, CA · 660 3RD ST · 94107
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 98 (band A) |
| Site EUI | 20.5 kBtu/ft² |
| Source EUI | 56.8 kBtu/ft² |
| GHG emissions | 126 tCO₂e |
| GHG intensity | 1.2 kgCO₂e/ft² |
| Electricity | 637,899 kWh |
| Natural gas | 355 therms |
| Gross floor area | 108,000 sq ft |
| Source record | sf:3787/008:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 98 | ±0 | 20.5 kBtu/ft² | 126 tCO₂e |
| 2024 | 98 | ±0 | 21.4 kBtu/ft² | 132 tCO₂e |
| 2023 | 98 | 21.3 kBtu/ft² | 161 tCO₂e | |
| 2022 | — | — | — | |
| 2021 | 97 | 22.1 kBtu/ft² | 144 tCO₂e | |
| 2020 | — | — | — | |
| 2019 | 89 | 34.4 kBtu/ft² | 261 tCO₂e | |
| 2018 | — | — | — | |
| 2017 | 99 | +2 | 24.7 kBtu/ft² | 200 tCO₂e |
| 2016 | 97 | +1 | 27.9 kBtu/ft² | 258 tCO₂e |
| 2015 | 96 | +1 | 32.0 kBtu/ft² | 277 tCO₂e |
| 2014 | 95 | ±0 | 32.0 kBtu/ft² | 279 tCO₂e |
| 2013 | 95 | -1 | 32.3 kBtu/ft² | 301 tCO₂e |
| 2012 | 96 | -2 | 32.6 kBtu/ft² | 312 tCO₂e |
| 2011 | 98 | 33.7 kBtu/ft² | 321 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
- 660 3RD ST
- City
- San Francisco
- State
- California
- ZIP
- 94107
- Coordinates
- 37.77910, -122.39365
Within ~1 km
Nearby benchmarked buildings
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- 303 Second Streetscore 92
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See also: most efficient in San Francisco · biggest emitters
Frequently asked questions
What is 660 Third's energy grade?
660 Third scores 98 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2025 San Francisco disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 660 Third use?
Its 2025 site energy-use intensity was 20.5 kBtu/ft² (56.8 kBtu/ft² source) across 108,000 sq ft, including 637,899 kWh of electricity and 355 therms of natural gas.
What are 660 Third's carbon emissions?
660 Third reported 126 tCO₂e of greenhouse-gas emissions (1.2 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:3787/008:2025.