3420 Bristol
Office in California, CA · 3420 Bristol Street, Costa Mesa · 92626
At a glance
3420 Bristol is a 67,281-square-foot office building at 3420 Bristol Street, Costa Mesa in Costa Mesa, California, built in 1974. In its 2018 California benchmarking disclosure it reported an ENERGY STAR score of 50 out of 100 (grade D), a site energy-use intensity of 87.6 kBtu/ft² and 364 tCO₂e of greenhouse-gas emissions. That score is higher than 16% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2018
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 50 (band D) |
| Site EUI | 87.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 364 tCO₂e |
| GHG intensity | 5.4 kgCO₂e/ft² |
| Electricity | 1,009,967 kWh |
| Natural gas | 22,825 therms |
| Gross floor area | 67,281 sq ft |
| Source record | california:6342964:2018 |
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
- 3420 Bristol Street, Costa Mesa
- City
- California
- State
- California
- ZIP
- 92626
- Coordinates
- 33.69391, -117.88498
Within ~1 km
Nearby benchmarked buildings
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- South Coast Plaza- Scp Westscore —
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- Halcyon Housescore 100
Multifamily Housing · 520,685 sq ft
- Plaza Towerscore 86
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- Center Tower Buildingscore 80
Office · 462,191 sq ft
See also: most efficient in California · biggest emitters
How does 3420 Bristol compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 3420 Bristol's ENERGY STAR score of 50 compares with an average of 75 across the 4,912 that report a score; it scores higher than 16% of them and lower than 84%. Its site EUI of 87.6 kBtu/ft² is about 55% 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 5.4 kgCO₂e/ft² is about 50% above the group average of 3.6 kgCO₂e/ft².
At 67,281 sq ft, it is about 56% below the average floor area of 151,937 sq ft for those buildings. It was built in 1974, 11 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.
What does an ENERGY STAR score of 50 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 50 means the building performs better than about 50% of its national peers. BuildingCensus bands the score into report-card grades; 50 falls in band D — lowest band (1–54). It sits 25 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. 3420 Bristol's 87.6 kBtu/ft² across 67,281 sq ft works out to about 5.9 billion Btu (1,727 MWh-equivalent) in 2018. The disclosure also reports 1,009,967 kWh of electricity and 22,825 therms of natural gas for the year.
Which law requires 3420 Bristol to report its energy use?
3420 Bristol 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 2018 disclosure (source record california:6342964:2018). 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
- Valencia Corporate Plaza - 28470 Ave Stanford· 67,203 sq ft · score 88 (A)
- 28470 Avenue Stanford· 67,203 sq ft · score 81 (B)
- 745 S Broadway· 67,200 sq ft · score 100 (A)
- Jet Propulsion Laboratory-1049/55/106-198-Control Systems Laboratory· 67,172 sq ft · score 77 (B)
- 15707 Rockfield Blvd· 67,128 sq ft · score 85 (A)
- Eton Inv Group - 21110 Nordhoff St, Chatsworth, Ca 91311· 67,122 sq ft · score 100 (A)
- 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 3420 Bristol's energy grade?
3420 Bristol scores 50 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2018 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 3420 Bristol use?
Its 2018 site energy-use intensity was 87.6 kBtu/ft² across 67,281 sq ft, including 1,009,967 kWh of electricity and 22,825 therms of natural gas.
What are 3420 Bristol's carbon emissions?
3420 Bristol reported 364 tCO₂e of greenhouse-gas emissions (5.4 kgCO₂e/ft²) for 2018.
Where is 3420 Bristol?
3420 Bristol is at 3420 Bristol Street, Costa Mesa, in Costa Mesa, California 92626. Its coordinates are 33.69391, -117.88498 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 3420 Bristol and when was it built?
3420 Bristol has 67,281 sq ft of gross floor area, as reported in its 2018 disclosure. The disclosure lists 1974 as its year built. It is classed as office.
Is 3420 Bristol covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2018 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, “3420 Bristol, Costa Mesa, California — 2018 benchmarking disclosure”, https://buildingcensus.com/buildings/california/3420-bristol-d317d67a (data as of July 9, 2026).