B-5
Office in California, CA · 2045 East Hamilton Avenue, San Jose · 95125
At a glance
B-5 is a 50,509-square-foot office building at 2045 East Hamilton Avenue, San Jose in San Jose, California, built in 1984. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 70 out of 100 (grade B), a site energy-use intensity of 62.8 kBtu/ft² and 189 tCO₂e of greenhouse-gas emissions. That score is higher than 30% 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 | 70 (band B) |
| Site EUI | 62.8 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 189 tCO₂e |
| GHG intensity | 3.7 kgCO₂e/ft² |
| Electricity | 603,096 kWh |
| Natural gas | 9,865 therms |
| Gross floor area | 50,509 sq ft |
| Source record | california:9137626:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 70 | ±0 | 62.8 kBtu/ft² | 189 tCO₂e |
| 2023 | 70 | +9 | 55.6 kBtu/ft² | 192 tCO₂e |
| 2022 | 61 | +47 | 59.2 kBtu/ft² | 196 tCO₂e |
| 2021 | 14 | -36 | 79.4 kBtu/ft² | 256 tCO₂e |
| 2020 | 50 | ±0 | 77.6 kBtu/ft² | 228 tCO₂e |
| 2019 | 50 | 77.6 kBtu/ft² | 228 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
- 2045 East Hamilton Avenue, San Jose
- City
- California
- State
- California
- ZIP
- 95125
- Coordinates
- 37.29517, -121.92653
Within ~1 km
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See also: most efficient in California · biggest emitters
How does B-5 compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. B-5's ENERGY STAR score of 70 compares with an average of 75 across the 4,912 that report a score; it scores higher than 30% of them and lower than 69%. Its site EUI of 62.8 kBtu/ft² is about 11% above the average of 56.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 3.7 kgCO₂e/ft² is roughly in line with the group average of 3.6 kgCO₂e/ft².
At 50,509 sq ft, it is about 67% below the average floor area of 151,937 sq ft for those buildings. Its 1984 construction date is close to 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 B-5's energy performance changed over time?
BuildingCensus holds 6 California disclosures for B-5, covering report years 2019–2024. Its ENERGY STAR score went from 50 in 2019 to 70 in 2024 (+20 points); its best year on file was 2023, at 70. Site EUI moved from 77.6 kBtu/ft² (2019) to 62.8 kBtu/ft² (2024), a 19% decrease. Reported emissions went from 228 tCO₂e to 189 tCO₂e over the same span (down 17%).
What does an ENERGY STAR score of 70 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 70 means the building performs better than about 70% of its national peers. BuildingCensus bands the score into report-card grades; 70 falls in band B — above median (70–84). It sits 5 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. B-5's 62.8 kBtu/ft² across 50,509 sq ft works out to about 3.2 billion Btu (930 MWh-equivalent) in 2024. The disclosure also reports 603,096 kWh of electricity and 9,865 therms of natural gas for the year.
Which law requires B-5 to report its energy use?
B-5 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:9137626:2024). 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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- 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 B-5's energy grade?
B-5 scores 70 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does B-5 use?
Its 2024 site energy-use intensity was 62.8 kBtu/ft² across 50,509 sq ft, including 603,096 kWh of electricity and 9,865 therms of natural gas.
What are B-5's carbon emissions?
B-5 reported 189 tCO₂e of greenhouse-gas emissions (3.7 kgCO₂e/ft²) for 2024.
Where is B-5?
B-5 is at 2045 East Hamilton Avenue, San Jose, in San Jose, California 95125. Its coordinates are 37.29517, -121.92653 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is B-5 and when was it built?
B-5 has 50,509 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1984 as its year built. It is classed as office.
Is B-5 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, “B-5, San Jose, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/b-5-a519ea98 (data as of July 9, 2026).