666 POST ST
Mixed Residential in San Francisco, CA · 94102
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 75 (band B) |
| Site EUI | 37.6 kBtu/ft² |
| Source EUI | 53.5 kBtu/ft² |
| GHG emissions | 165 tCO₂e |
| GHG intensity | 2.0 kgCO₂e/ft² |
| Electricity | 191,143 kWh |
| Natural gas | 24,105 therms |
| Gross floor area | 81,426 sq ft |
| Source record | sf:0298/012:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 75 | -3 | 37.6 kBtu/ft² | 165 tCO₂e |
| 2024 | 78 | +9 | 36.9 kBtu/ft² | 168 tCO₂e |
| 2023 | 69 | -4 | 39.7 kBtu/ft² | 183 tCO₂e |
| 2022 | 73 | +10 | 40.6 kBtu/ft² | 186 tCO₂e |
| 2021 | 63 | 41.3 kBtu/ft² | 190 tCO₂e | |
| 2020 | — | — | — | |
| 2019 | — | — | — | |
| 2018 | — | — | — |
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 owner listed in the disclosure.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 666 POST ST
- City
- San Francisco
- State
- California
- ZIP
- 94102
- Coordinates
- 37.78791, -122.41290
Within ~1 km
Nearby benchmarked buildings
Commercial · 1,964,250 sq ft
- Hilton San Francisco Union Square (San Franciscoofh)score —
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- Hilton San Francisco Union Square (Sfofh)score 89
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- Westin St. Francis Hotelscore 100
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- 84Sch - Westin St. Francisscore 97
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- The Westin St. Francisscore 51
Hotel · 1,183,542 sq ft
See also: most efficient in San Francisco · biggest emitters
Frequently asked questions
What is 666 POST ST's energy grade?
666 POST ST scores 75 out of 100 on ENERGY STAR — band B (Above median (70–84)) — in its 2025 San Francisco disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 666 POST ST use?
Its 2025 site energy-use intensity was 37.6 kBtu/ft² (53.5 kBtu/ft² source) across 81,426 sq ft, including 191,143 kWh of electricity and 24,105 therms of natural gas.
What are 666 POST ST's carbon emissions?
666 POST ST reported 165 tCO₂e of greenhouse-gas emissions (2.0 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.
Dataset updated . Source: Existing Buildings Energy Performance Ordinance disclosure, record sf:0298/012:2025.