Westlake MOB
Commercial in San Francisco, CA · 909 MONTGOMERY ST · 94133
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 78 (band B) |
| Site EUI | 37.7 kBtu/ft² |
| Source EUI | 100.3 kBtu/ft² |
| GHG emissions | 185 tCO₂e |
| GHG intensity | 2.1 kgCO₂e/ft² |
| Electricity | 878,176 kWh |
| Natural gas | 2,543 therms |
| Gross floor area | 104,311 sq ft |
| Source record | sf:0163/005:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 78 | -1 | 37.7 kBtu/ft² | 185 tCO₂e |
| 2024 | 79 | +7 | 40.3 kBtu/ft² | 227 tCO₂e |
| 2023 | 72 | +1 | 45.5 kBtu/ft² | 223 tCO₂e |
| 2022 | 71 | +1 | 45.7 kBtu/ft² | 268 tCO₂e |
| 2021 | 70 | 45.0 kBtu/ft² | 234 tCO₂e | |
| 2020 | — | 42.7 kBtu/ft² | 242 tCO₂e | |
| 2019 | 73 | +7 | 44.4 kBtu/ft² | 251 tCO₂e |
| 2018 | 66 | +4 | 48.2 kBtu/ft² | 286 tCO₂e |
| 2017 | 62 | 51.0 kBtu/ft² | 303 tCO₂e | |
| 2016 | — | — | — | |
| 2015 | 77 | ±0 | 53.2 kBtu/ft² | 358 tCO₂e |
| 2014 | 77 | -2 | 51.1 kBtu/ft² | 347 tCO₂e |
| 2013 | 79 | +18 | 50.1 kBtu/ft² | 342 tCO₂e |
| 2012 | 61 | +5 | 62.7 kBtu/ft² | 414 tCO₂e |
| 2011 | 56 | 66.8 kBtu/ft² | 443 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 owner listed in the disclosure.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 909 MONTGOMERY ST
- City
- San Francisco
- State
- California
- ZIP
- 94133
- Coordinates
- 37.79751, -122.40407
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
Frequently asked questions
What is Westlake MOB's energy grade?
Westlake MOB scores 78 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 Westlake MOB use?
Its 2025 site energy-use intensity was 37.7 kBtu/ft² (100.3 kBtu/ft² source) across 104,311 sq ft, including 878,176 kWh of electricity and 2,543 therms of natural gas.
What are Westlake MOB's carbon emissions?
Westlake MOB reported 185 tCO₂e of greenhouse-gas emissions (2.1 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:0163/005:2025.