334 MASON ST
Commercial in San Francisco, CA · 94102
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 53 (band D) |
| Site EUI | 107.5 kBtu/ft² |
| Source EUI | 163.9 kBtu/ft² |
| GHG emissions | 251 tCO₂e |
| GHG intensity | 5.8 kgCO₂e/ft² |
| Electricity | 368,023 kWh |
| Natural gas | 33,761 therms |
| Gross floor area | 43,070 sq ft |
| Source record | sf:0315/017:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 53 | -24 | 107.5 kBtu/ft² | 251 tCO₂e |
| 2024 | 77 | -10 | 74.3 kBtu/ft² | 187 tCO₂e |
| 2023 | 87 | +1 | 60.0 kBtu/ft² | 159 tCO₂e |
| 2022 | 86 | 62.1 kBtu/ft² | 162 tCO₂e | |
| 2021 | — | — | — | |
| 2020 | — | — | — | |
| 2019 | — | — | — | |
| 2018 | 91 | 74.6 kBtu/ft² | 197 tCO₂e | |
| 2017 | — | — | — | |
| 2016 | 60 | +8 | 78.1 kBtu/ft² | 238 tCO₂e |
| 2015 | 52 | -4 | 83.2 kBtu/ft² | 245 tCO₂e |
| 2014 | 56 | +4 | 76.3 kBtu/ft² | 228 tCO₂e |
| 2013 | 52 | 90.4 kBtu/ft² | 260 tCO₂e | |
| 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 owner listed in the disclosure.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 334 MASON ST
- City
- San Francisco
- State
- California
- ZIP
- 94102
- Coordinates
- 37.78676, -122.40941
Within ~1 km
Nearby benchmarked buildings
- 555 Californiascore 75
Commercial · 1,968,807 sq ft
Commercial · 1,964,250 sq ft
- Hilton San Francisco Union Square (San Franciscoofh)score —
Hotel · 1,964,250 sq ft
- Hilton San Francisco Union Square (Sfofh)score 89
Hotel · 1,964,250 sq ft
- 555 California Streetscore 76
Office · 1,810,397 sq ft
Commercial · 1,684,713 sq ft
See also: most efficient in San Francisco · biggest emitters
Frequently asked questions
What is 334 MASON ST's energy grade?
334 MASON ST scores 53 out of 100 on ENERGY STAR — band D (Lowest band (1–54)) — in its 2025 San Francisco disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 334 MASON ST use?
Its 2025 site energy-use intensity was 107.5 kBtu/ft² (163.9 kBtu/ft² source) across 43,070 sq ft, including 368,023 kWh of electricity and 33,761 therms of natural gas.
What are 334 MASON ST's carbon emissions?
334 MASON ST reported 251 tCO₂e of greenhouse-gas emissions (5.8 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:0315/017:2025.