300 Montgomery Associates
Office in California, CA · 300 Montgomery Street, Suite 628, San Francisco · 94104
At a glance
300 Montgomery Associates is a 205,737-square-foot office building at 300 Montgomery Street, Suite 628, San Francisco in San Francisco, California, built in 1911. In its 2018 California benchmarking disclosure it reported an ENERGY STAR score of 74 out of 100 (grade B), a site energy-use intensity of 48.0 kBtu/ft² and 687 tCO₂e of greenhouse-gas emissions. That score is higher than 34% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2018
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 74 (band B) |
| Site EUI | 48.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 687 tCO₂e |
| GHG intensity | 3.3 kgCO₂e/ft² |
| Electricity | 1,903,123 kWh |
| Gross floor area | 205,737 sq ft |
| Source record | california:2879392:2018 |
Compliance context
AB 802 (Public Resources Code §25402.10)
AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 300 Montgomery Street, Suite 628, San Francisco
- City
- California
- State
- California
- ZIP
- 94104
- Coordinates
- 37.79235, -122.40240
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 300 Montgomery Associates compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 300 Montgomery Associates's ENERGY STAR score of 74 compares with an average of 75 across the 4,912 that report a score; it scores higher than 34% of them and lower than 65%. Its site EUI of 48.0 kBtu/ft² is about 15% below the average of 56.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.3 kgCO₂e/ft² is roughly in line with the group average of 3.6 kgCO₂e/ft².
At 205,737 sq ft, it is about 35% above the average floor area of 151,937 sq ft for those buildings. It was built in 1911, 74 years earlier than the group's average year built (1985). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
What does an ENERGY STAR score of 74 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 74 means the building performs better than about 74% of its national peers. BuildingCensus bands the score into report-card grades; 74 falls in band B — above median (70–84). It sits 1 points below 75, the threshold for ENERGY STAR certification. In California, 65% of scored buildings are at 75 or above.
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. 300 Montgomery Associates's 48.0 kBtu/ft² across 205,737 sq ft works out to about 9.9 billion Btu (2,894 MWh-equivalent) in 2018. The disclosure also reports 1,903,123 kWh of electricity for the year.
Which law requires 300 Montgomery Associates to report its energy use?
300 Montgomery Associates reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2018 disclosure (source record california:2879392:2018). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
More office buildings in California
- Tustin Centre I· 205,570 sq ft · score 89 (A)
- 5161 Lankershim· 205,298 sq ft · score 79 (B)
- Hamm'S Building· 205,293 sq ft · score 97 (A)
- Richmond Office Bldg P· 205,153 sq ft · score 98 (A)
- The Collective· 205,130 sq ft · EUI 50.4 kBtu/ft²
- 09974-1- Ca, San Francisco, 151 Union Street #750· 205,000 sq ft · score 90 (A)
- Office buildings in California· 6,214 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is 300 Montgomery Associates's energy grade?
300 Montgomery Associates scores 74 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2018 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 300 Montgomery Associates use?
Its 2018 site energy-use intensity was 48.0 kBtu/ft² across 205,737 sq ft, including 1,903,123 kWh of electricity.
What are 300 Montgomery Associates's carbon emissions?
300 Montgomery Associates reported 687 tCO₂e of greenhouse-gas emissions (3.3 kgCO₂e/ft²) for 2018.
Where is 300 Montgomery Associates?
300 Montgomery Associates is at 300 Montgomery Street, Suite 628, San Francisco, in San Francisco, California 94104. Its coordinates are 37.79235, -122.40240 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 300 Montgomery Associates and when was it built?
300 Montgomery Associates has 205,737 sq ft of gross floor area, as reported in its 2018 disclosure. The disclosure lists 1911 as its year built. It is classed as office.
Is 300 Montgomery Associates covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2018 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
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About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “300 Montgomery Associates, San Francisco, California — 2018 benchmarking disclosure”, https://buildingcensus.com/buildings/california/300-montgomery-associates-b8ab570c (data as of July 9, 2026).