Airport Iv
Office in California, CA · 1735 North First Street, San Jose · 95112
At a glance
Airport Iv is a 55,000-square-foot office building at 1735 North First Street, San Jose in San Jose, California, built in 1979. In its 2023 California benchmarking disclosure it reported an ENERGY STAR score of 68 out of 100 (grade C), a site energy-use intensity of 64.0 kBtu/ft² and 223 tCO₂e of greenhouse-gas emissions. That score is higher than 28% 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 | 68 (band C) |
| Site EUI | 64.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 223 tCO₂e |
| GHG intensity | 4.1 kgCO₂e/ft² |
| Electricity | 487,185 kWh |
| Natural gas | 19,811 therms |
| Gross floor area | 55,000 sq ft |
| Source record | california:3579795:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 68 | -10 | 64.0 kBtu/ft² | 223 tCO₂e |
| 2022 | 78 | -3 | 52.0 kBtu/ft² | 179 tCO₂e |
| 2021 | 81 | +3 | 48.0 kBtu/ft² | 152 tCO₂e |
| 2020 | 78 | +23 | 52.0 kBtu/ft² | 174 tCO₂e |
| 2019 | 55 | +9 | 76.5 kBtu/ft² | 254 tCO₂e |
| 2018 | 46 | 74.9 kBtu/ft² | 255 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
- 1735 North First Street, San Jose
- City
- California
- State
- California
- ZIP
- 95112
- Coordinates
- 37.36851, -121.91542
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Airport Iv compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Airport Iv's ENERGY STAR score of 68 compares with an average of 75 across the 4,912 that report a score; it scores higher than 28% of them and lower than 71%. Its site EUI of 64.0 kBtu/ft² is about 13% 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 4.1 kgCO₂e/ft² is about 14% above the group average of 3.6 kgCO₂e/ft².
At 55,000 sq ft, it is about 64% below the average floor area of 151,937 sq ft for those buildings. It was built in 1979, 6 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 Airport Iv's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Airport Iv, covering report years 2018–2023. Its ENERGY STAR score went from 46 in 2018 to 68 in 2023 (+22 points); its best year on file was 2021, at 81. Site EUI moved from 74.9 kBtu/ft² (2018) to 64.0 kBtu/ft² (2023), a 15% decrease. Reported emissions went from 255 tCO₂e to 223 tCO₂e over the same span (down 13%).
What does an ENERGY STAR score of 68 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 68 means the building performs better than about 68% of its national peers. BuildingCensus bands the score into report-card grades; 68 falls in band C — below median (55–69). It sits 7 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. Airport Iv's 64.0 kBtu/ft² across 55,000 sq ft works out to about 3.5 billion Btu (1,032 MWh-equivalent) in 2023. The disclosure also reports 487,185 kWh of electricity and 19,811 therms of natural gas for the year.
Which law requires Airport Iv to report its energy use?
Airport Iv 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:3579795:2023). 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
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- 3579 Valley Centre - Kcdm· 54,960 sq ft · score 80 (B)
- Field Storage Building· 54,952 sq ft · score 87 (A)
- Benecia Macara-590 Macara· 54,934 sq ft
- Roddenberry Office Building· 54,865 sq ft · score 56 (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 Airport Iv's energy grade?
Airport Iv scores 68 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2023 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Airport Iv use?
Its 2023 site energy-use intensity was 64.0 kBtu/ft² across 55,000 sq ft, including 487,185 kWh of electricity and 19,811 therms of natural gas.
What are Airport Iv's carbon emissions?
Airport Iv reported 223 tCO₂e of greenhouse-gas emissions (4.1 kgCO₂e/ft²) for 2023.
Where is Airport Iv?
Airport Iv is at 1735 North First Street, San Jose, in San Jose, California 95112. Its coordinates are 37.36851, -121.91542 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Airport Iv and when was it built?
Airport Iv has 55,000 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1979 as its year built. It is classed as office.
Is Airport Iv 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, “Airport Iv, San Jose, California — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/california/airport-iv-9b8671a3 (data as of July 9, 2026).