501 Hawthorne Place
Office in California, CA · 501 Hawthorne Place, Livermore · 94550
At a glance
501 Hawthorne Place is a 123,789-square-foot office building at 501 Hawthorne Place, Livermore in Livermore, California, built in 2001. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 10.2 kBtu/ft² and 78 tCO₂e of greenhouse-gas emissions. That score is higher than 91% 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 | 100 (band A) |
| Site EUI | 10.2 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 78 tCO₂e |
| GHG intensity | 0.6 kgCO₂e/ft² |
| Electricity | 252,987 kWh |
| Natural gas | 3,915 therms |
| Gross floor area | 123,789 sq ft |
| Source record | california:27844817:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 10.2 kBtu/ft² | 78 tCO₂e |
| 2023 | 100 | ±0 | 10.8 kBtu/ft² | 89 tCO₂e |
| 2022 | 100 | 10.9 kBtu/ft² | 88 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
- 501 Hawthorne Place, Livermore
- City
- California
- State
- California
- ZIP
- 94550
- Coordinates
- 37.70409, -121.70023
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 501 Hawthorne Place compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 501 Hawthorne Place's ENERGY STAR score of 100 compares with an average of 75 across the 4,912 that report a score; it scores higher than 91% of them. Its site EUI of 10.2 kBtu/ft² is about 82% 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 0.6 kgCO₂e/ft² is about 83% below the group average of 3.6 kgCO₂e/ft².
At 123,789 sq ft, it is about 19% below the average floor area of 151,937 sq ft for those buildings. It was built in 2001, 16 years later 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 501 Hawthorne Place's energy performance changed over time?
BuildingCensus holds 3 California disclosures for 501 Hawthorne Place, covering report years 2022–2024. Its ENERGY STAR score was 100 in both 2022 and 2024. Site EUI moved from 10.9 kBtu/ft² (2022) to 10.2 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 88 tCO₂e to 78 tCO₂e over the same span (down 11%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. 501 Hawthorne Place's 10.2 kBtu/ft² across 123,789 sq ft works out to about 1.3 billion Btu (370 MWh-equivalent) in 2024. The disclosure also reports 252,987 kWh of electricity and 3,915 therms of natural gas for the year.
Which law requires 501 Hawthorne Place to report its energy use?
501 Hawthorne Place 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:27844817:2024). 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.
More office buildings in California
- 1302 El Camino Real· 123,634 sq ft · score 61 (C)
- 2105 S. Bascom· 123,594 sq ft · score 70 (B)
- State Compensation Insurance Fund 6301 Day St. Riverside· 123,549 sq ft · EUI 84.7 kBtu/ft²
- 2150 N First Novel Coworking Llc· 123,511 sq ft · score 90 (A)
- 234 E Colorado· 123,493 sq ft · score 88 (A)
- Civic Center Building - Sab035· 123,456 sq ft · score 61 (C)
- 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 501 Hawthorne Place's energy grade?
501 Hawthorne Place scores 100 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 501 Hawthorne Place use?
Its 2024 site energy-use intensity was 10.2 kBtu/ft² across 123,789 sq ft, including 252,987 kWh of electricity and 3,915 therms of natural gas.
What are 501 Hawthorne Place's carbon emissions?
501 Hawthorne Place reported 78 tCO₂e of greenhouse-gas emissions (0.6 kgCO₂e/ft²) for 2024.
Where is 501 Hawthorne Place?
501 Hawthorne Place is at 501 Hawthorne Place, Livermore, in Livermore, California 94550. Its coordinates are 37.70409, -121.70023 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 501 Hawthorne Place and when was it built?
501 Hawthorne Place has 123,789 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2001 as its year built. It is classed as office.
Is 501 Hawthorne Place 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, “501 Hawthorne Place, Livermore, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/501-hawthorne-place-40aec9aa (data as of July 9, 2026).