55 Hawthorne (Sf) Owner Llc
Office in California, CA · 55 Hawthorne Street, San Francisco · 94105
At a glance
55 Hawthorne (Sf) Owner Llc is a 153,281-square-foot office building at 55 Hawthorne Street, San Francisco in San Francisco, California, built in 1970. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 99 out of 100 (grade A), a site energy-use intensity of 25.9 kBtu/ft² and 248 tCO₂e of greenhouse-gas emissions. That score is higher than 88% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 25.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 248 tCO₂e |
| GHG intensity | 1.6 kgCO₂e/ft² |
| Electricity | 769,416 kWh |
| Natural gas | 13,981 therms |
| Gross floor area | 153,281 sq ft |
| Source record | california:4205426:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 99 | ±0 | 25.9 kBtu/ft² | 248 tCO₂e |
| 2023 | 99 | -1 | 30.4 kBtu/ft² | 268 tCO₂e |
| 2022 | 100 | ±0 | 25.1 kBtu/ft² | 223 tCO₂e |
| 2021 | 100 | ±0 | 25.2 kBtu/ft² | 200 tCO₂e |
| 2020 | 100 | +1 | 35.2 kBtu/ft² | 259 tCO₂e |
| 2019 | 99 | +3 | 47.7 kBtu/ft² | 397 tCO₂e |
| 2018 | 96 | 51.6 kBtu/ft² | 456 tCO₂e |
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
- 55 Hawthorne Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94105
- Coordinates
- 37.78566, -122.39845
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 55 Hawthorne (Sf) Owner Llc compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 55 Hawthorne (Sf) Owner Llc's ENERGY STAR score of 99 compares with an average of 75 across the 4,912 that report a score; it scores higher than 88% of them and lower than 9%. Its site EUI of 25.9 kBtu/ft² is about half of 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 1.6 kgCO₂e/ft² is about 55% below the group average of 3.6 kgCO₂e/ft².
At 153,281 sq ft, it is roughly in line with the average floor area of 151,937 sq ft for those buildings. It was built in 1970, 15 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.
How has 55 Hawthorne (Sf) Owner Llc's energy performance changed over time?
BuildingCensus holds 7 California disclosures for 55 Hawthorne (Sf) Owner Llc, covering report years 2018–2024. Its ENERGY STAR score went from 96 in 2018 to 99 in 2024 (+3 points); its best year on file was 2020, at 100. Site EUI moved from 51.6 kBtu/ft² (2018) to 25.9 kBtu/ft² (2024), a 50% decrease. Reported emissions went from 456 tCO₂e to 248 tCO₂e over the same span (down 45%).
What does an ENERGY STAR score of 99 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 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. 55 Hawthorne (Sf) Owner Llc's 25.9 kBtu/ft² across 153,281 sq ft works out to about 4 billion Btu (1,163 MWh-equivalent) in 2024. The disclosure also reports 769,416 kWh of electricity and 13,981 therms of natural gas for the year.
Which law requires 55 Hawthorne (Sf) Owner Llc to report its energy use?
55 Hawthorne (Sf) Owner Llc 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 2024 disclosure (source record california:4205426:2024). 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.
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Frequently asked questions
What is 55 Hawthorne (Sf) Owner Llc's energy grade?
55 Hawthorne (Sf) Owner Llc scores 99 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 55 Hawthorne (Sf) Owner Llc use?
Its 2024 site energy-use intensity was 25.9 kBtu/ft² across 153,281 sq ft, including 769,416 kWh of electricity and 13,981 therms of natural gas.
What are 55 Hawthorne (Sf) Owner Llc's carbon emissions?
55 Hawthorne (Sf) Owner Llc reported 248 tCO₂e of greenhouse-gas emissions (1.6 kgCO₂e/ft²) for 2024.
Where is 55 Hawthorne (Sf) Owner Llc?
55 Hawthorne (Sf) Owner Llc is at 55 Hawthorne Street, San Francisco, in San Francisco, California 94105. Its coordinates are 37.78566, -122.39845 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 55 Hawthorne (Sf) Owner Llc and when was it built?
55 Hawthorne (Sf) Owner Llc has 153,281 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1970 as its year built. It is classed as office.
Is 55 Hawthorne (Sf) Owner Llc covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 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, “55 Hawthorne (Sf) Owner Llc, San Francisco, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/55-hawthorne-sf-owner-llc-32a4909a (data as of July 9, 2026).