Ab802 3870 N. First Street
Office in California, CA · 3870 North First Street, San Jose · 95134
At a glance
Ab802 3870 N. First Street is a 89,616-square-foot office building at 3870 North First Street, San Jose in San Jose, California, built in 1991. In its 2023 California benchmarking disclosure it reported an ENERGY STAR score of 20 out of 100 (grade D), a site energy-use intensity of 111.1 kBtu/ft² and 676 tCO₂e of greenhouse-gas emissions. That score is higher than 6% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 20 (band D) |
| Site EUI | 111.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 676 tCO₂e |
| GHG intensity | 7.5 kgCO₂e/ft² |
| Electricity | 2,406,472 kWh |
| Natural gas | 17,652 therms |
| Gross floor area | 89,616 sq ft |
| Source record | california:15144777:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 20 | -56 | 111.1 kBtu/ft² | 676 tCO₂e |
| 2022 | 76 | +52 | 55.9 kBtu/ft² | 323 tCO₂e |
| 2021 | 24 | -20 | 104.7 kBtu/ft² | 562 tCO₂e |
| 2020 | 44 | 82.6 kBtu/ft² | 468 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
- 3870 North First Street, San Jose
- City
- California
- State
- California
- ZIP
- 95134
- Coordinates
- 37.41290, -121.94798
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Ab802 3870 N. First Street compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Ab802 3870 N. First Street's ENERGY STAR score of 20 compares with an average of 75 across the 4,912 that report a score; it scores higher than 6% of them and lower than 93%. Its site EUI of 111.1 kBtu/ft² is about twice 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 7.5 kgCO₂e/ft² is about twice the group average of 3.6 kgCO₂e/ft².
At 89,616 sq ft, it is about 41% below the average floor area of 151,937 sq ft for those buildings. It was built in 1991, 6 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 Ab802 3870 N. First Street's energy performance changed over time?
BuildingCensus holds 4 California disclosures for Ab802 3870 N. First Street, covering report years 2020–2023. Its ENERGY STAR score went from 44 in 2020 to 20 in 2023 (-24 points); its best year on file was 2022, at 76. Site EUI moved from 82.6 kBtu/ft² (2020) to 111.1 kBtu/ft² (2023), an 35% increase. Reported emissions went from 468 tCO₂e to 676 tCO₂e over the same span (up 45%).
What does an ENERGY STAR score of 20 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 20 means the building performs better than about 20% of its national peers. BuildingCensus bands the score into report-card grades; 20 falls in band D — lowest band (1–54). It sits 55 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. Ab802 3870 N. First Street's 111.1 kBtu/ft² across 89,616 sq ft works out to about 10 billion Btu (2,918 MWh-equivalent) in 2023. The disclosure also reports 2,406,472 kWh of electricity and 17,652 therms of natural gas for the year.
Which law requires Ab802 3870 N. First Street to report its energy use?
Ab802 3870 N. First Street 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 2023 disclosure (source record california:15144777:2023). 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
- Mani Brothers - 12555 Jefferson· 89,600 sq ft · score 69 (C)
- 3 Glen Bell Way· 89,578 sq ft · score 37 (D)
- Education Center· 89,550 sq ft · score 55 (C)
- Fremont City Hall· 89,507 sq ft · score 99 (A)
- Adaya Asset Boswell East/Meridian· 89,490 sq ft
- Azusa (Sierra Madre) (State Owned) No P· 89,489 sq ft · EUI 23.0 kBtu/ft²
- 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 Ab802 3870 N. First Street's energy grade?
Ab802 3870 N. First Street scores 20 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2023 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Ab802 3870 N. First Street use?
Its 2023 site energy-use intensity was 111.1 kBtu/ft² across 89,616 sq ft, including 2,406,472 kWh of electricity and 17,652 therms of natural gas.
What are Ab802 3870 N. First Street's carbon emissions?
Ab802 3870 N. First Street reported 676 tCO₂e of greenhouse-gas emissions (7.5 kgCO₂e/ft²) for 2023.
Where is Ab802 3870 N. First Street?
Ab802 3870 N. First Street is at 3870 North First Street, San Jose, in San Jose, California 95134. Its coordinates are 37.41290, -121.94798 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Ab802 3870 N. First Street and when was it built?
Ab802 3870 N. First Street has 89,616 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1991 as its year built. It is classed as office.
Is Ab802 3870 N. First Street covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2023 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, “Ab802 3870 N. First Street, San Jose, California — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/california/ab802-3870-n-first-street-50412a69 (data as of July 9, 2026).