420 Exchange
Office in California, CA · 420 Exchange, Irvine · 92602
At a glance
420 Exchange is a 53,360-square-foot office building at 420 Exchange, Irvine in Irvine, California, built in 1999. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 48 out of 100 (grade D), a site energy-use intensity of 57.1 kBtu/ft² and 186 tCO₂e of greenhouse-gas emissions. That score is higher than 15% 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 | 48 (band D) |
| Site EUI | 57.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 186 tCO₂e |
| GHG intensity | 3.5 kgCO₂e/ft² |
| Electricity | 648,774 kWh |
| Natural gas | 7,442 therms |
| Gross floor area | 53,360 sq ft |
| Source record | california:2027665:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 48 | +11 | 57.1 kBtu/ft² | 186 tCO₂e |
| 2023 | 37 | -18 | 68.6 kBtu/ft² | 235 tCO₂e |
| 2022 | 55 | -7 | 56.2 kBtu/ft² | 185 tCO₂e |
| 2021 | 62 | -11 | 50.9 kBtu/ft² | 160 tCO₂e |
| 2020 | 73 | +3 | 63.6 kBtu/ft² | 214 tCO₂e |
| 2019 | 70 | -3 | 65.3 kBtu/ft² | 225 tCO₂e |
| 2018 | 73 | 59.5 kBtu/ft² | 208 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
- 420 Exchange, Irvine
- City
- California
- State
- California
- ZIP
- 92602
- Coordinates
- 33.71449, -117.78287
Within ~1 km
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How does 420 Exchange compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 420 Exchange's ENERGY STAR score of 48 compares with an average of 75 across the 4,912 that report a score; it scores higher than 15% of them and lower than 85%. Its site EUI of 57.1 kBtu/ft² is roughly in line with the average of 56.4 kBtu/ft². Its emissions intensity of 3.5 kgCO₂e/ft² is roughly in line with the group average of 3.6 kgCO₂e/ft².
At 53,360 sq ft, it is about 65% below the average floor area of 151,937 sq ft for those buildings. It was built in 1999, 14 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 420 Exchange's energy performance changed over time?
BuildingCensus holds 7 California disclosures for 420 Exchange, covering report years 2018–2024. Its ENERGY STAR score went from 73 in 2018 to 48 in 2024 (-25 points); its best year on file was 2018, at 73. Site EUI moved from 59.5 kBtu/ft² (2018) to 57.1 kBtu/ft² (2024), a 4% decrease. Reported emissions went from 208 tCO₂e to 186 tCO₂e over the same span (down 10%).
What does an ENERGY STAR score of 48 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 48 means the building performs better than about 48% of its national peers. BuildingCensus bands the score into report-card grades; 48 falls in band D — lowest band (1–54). It sits 27 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. 420 Exchange's 57.1 kBtu/ft² across 53,360 sq ft works out to about 3 billion Btu (893 MWh-equivalent) in 2024. The disclosure also reports 648,774 kWh of electricity and 7,442 therms of natural gas for the year.
Which law requires 420 Exchange to report its energy use?
420 Exchange 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:2027665:2024). 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
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- Silicon Valley R&D - 160 Great Oaks Blvd· 53,300 sq ft · score 100 (A)
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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 420 Exchange's energy grade?
420 Exchange scores 48 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 420 Exchange use?
Its 2024 site energy-use intensity was 57.1 kBtu/ft² across 53,360 sq ft, including 648,774 kWh of electricity and 7,442 therms of natural gas.
What are 420 Exchange's carbon emissions?
420 Exchange reported 186 tCO₂e of greenhouse-gas emissions (3.5 kgCO₂e/ft²) for 2024.
Where is 420 Exchange?
420 Exchange is at 420 Exchange, Irvine, in Irvine, California 92602. Its coordinates are 33.71449, -117.78287 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 420 Exchange and when was it built?
420 Exchange has 53,360 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1999 as its year built. It is classed as office.
Is 420 Exchange 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, “420 Exchange, Irvine, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/420-exchange-a6c6da8c (data as of July 9, 2026).