1100 UNION ST
Mixed Residential in San Francisco, CA · 94109
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 98 (band A) |
| Site EUI | 33.1 kBtu/ft² |
| Source EUI | 42.3 kBtu/ft² |
| GHG emissions | 202 tCO₂e |
| GHG intensity | 1.8 kgCO₂e/ft² |
| Electricity | 142,806 kWh |
| Natural gas | 32,792 therms |
| Gross floor area | 113,740 sq ft |
| Source record | sf:0097/008:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 98 | 33.1 kBtu/ft² | 202 tCO₂e | |
| 2024 | — | — | — | |
| 2023 | — | — | — | |
| 2022 | — | — | — | |
| 2021 | — | — | — | |
| 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.
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Location
- Address
- 1100 UNION ST
- City
- San Francisco
- State
- California
- ZIP
- 94109
- Coordinates
- 37.79966, -122.41768
Within ~1 km
Nearby benchmarked buildings
- The Fairmont San Franciscoscore 86
Hotel · 804,136 sq ft
- Fairmont Hotel - San Franciscoscore 83
Commercial · 804,136 sq ft
- 1300 CLAY STscore —
Mixed Residential · 477,734 sq ft
- 211 BEACH STscore 98
Commercial · 405,000 sq ft
- 260 BAY STscore 100
Mixed Residential · 398,046 sq ft
- 999 GREEN STscore —
Mixed Residential · 381,255 sq ft
See also: most efficient in San Francisco · biggest emitters
Frequently asked questions
What is 1100 UNION ST's energy grade?
1100 UNION ST 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 1100 UNION ST use?
Its 2025 site energy-use intensity was 33.1 kBtu/ft² (42.3 kBtu/ft² source) across 113,740 sq ft, including 142,806 kWh of electricity and 32,792 therms of natural gas.
What are 1100 UNION ST's carbon emissions?
1100 UNION ST reported 202 tCO₂e of greenhouse-gas emissions (1.8 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:0097/008:2025.