3350 Harbor Blvd. - Ab802
Office in California, CA · 3350 Harbor Boulevard, Costa Mesa · 92626
At a glance
3350 Harbor Blvd. - Ab802 is a 52,275-square-foot office building at 3350 Harbor Boulevard, Costa Mesa in Costa Mesa, California, built in 1982. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 87 out of 100 (grade A), a site energy-use intensity of 31.4 kBtu/ft² and 105 tCO₂e of greenhouse-gas emissions. That score is higher than 56% 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 | 87 (band A) |
| Site EUI | 31.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 105 tCO₂e |
| GHG intensity | 2.0 kgCO₂e/ft² |
| Electricity | 425,336 kWh |
| Natural gas | 1,637 therms |
| Gross floor area | 52,275 sq ft |
| Source record | california:34882875:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 87 | -1 | 31.4 kBtu/ft² | 105 tCO₂e |
| 2023 | 88 | 29.8 kBtu/ft² | 108 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 3350 Harbor Boulevard, Costa Mesa
- City
- California
- State
- California
- ZIP
- 92626
- Coordinates
- 33.69282, -117.91858
Within ~1 km
Nearby benchmarked buildings
- Costa Mesa - 167score 98
Wholesale Club/Supercenter · 308,000 sq ft
- Commerce Park (Costa Mesa)score —
Non-Refrigerated Warehouse · 177,813 sq ft
- Costa Mesa Business Centerscore —
Non-Refrigerated Warehouse · 150,122 sq ft
Retail Store · 134,400 sq ft
- Calvary Chapel Of Costa Mesascore 60
Office · 105,000 sq ft
- 3333 Susan Street (The Hive)score 69
Office · 101,325 sq ft
See also: most efficient in California · biggest emitters
How does 3350 Harbor Blvd. - Ab802 compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 3350 Harbor Blvd. - Ab802's ENERGY STAR score of 87 compares with an average of 75 across the 4,912 that report a score; it scores higher than 56% of them and lower than 41%. Its site EUI of 31.4 kBtu/ft² is about 44% below the average of 56.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.0 kgCO₂e/ft² is about 44% below the group average of 3.6 kgCO₂e/ft².
At 52,275 sq ft, it is about 66% below the average floor area of 151,937 sq ft for those buildings. Its 1982 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 3350 Harbor Blvd. - Ab802's energy performance changed over time?
BuildingCensus holds 2 California disclosures for 3350 Harbor Blvd. - Ab802, covering report years 2023–2024. Its ENERGY STAR score went from 88 in 2023 to 87 in 2024 (-1 points); its best year on file was 2023, at 88. Site EUI moved from 29.8 kBtu/ft² (2023) to 31.4 kBtu/ft² (2024), an 5% increase. Reported emissions went from 108 tCO₂e to 105 tCO₂e over the same span (down 3%).
What does an ENERGY STAR score of 87 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 87 means the building performs better than about 87% of its national peers. BuildingCensus bands the score into report-card grades; 87 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. 3350 Harbor Blvd. - Ab802's 31.4 kBtu/ft² across 52,275 sq ft works out to about 1.6 billion Btu (481 MWh-equivalent) in 2024. The disclosure also reports 425,336 kWh of electricity and 1,637 therms of natural gas for the year.
Which law requires 3350 Harbor Blvd. - Ab802 to report its energy use?
3350 Harbor Blvd. - Ab802 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:34882875:2024). 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
- 7201 N Palm Ave· 52,265 sq ft · score 100 (A)
- 5935 Darwin Court· 52,260 sq ft · score 92 (A)
- Susie Gaines Mitchell· 52,252 sq ft · score 55 (C)
- 9201 Oakdale· 52,222 sq ft · score 43 (D)
- 2150 Gold Street· 52,214 sq ft · score 54 (D)
- Gwfour - 255 Fourier Avenue· 52,200 sq ft
- 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 3350 Harbor Blvd. - Ab802's energy grade?
3350 Harbor Blvd. - Ab802 scores 87 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 3350 Harbor Blvd. - Ab802 use?
Its 2024 site energy-use intensity was 31.4 kBtu/ft² across 52,275 sq ft, including 425,336 kWh of electricity and 1,637 therms of natural gas.
What are 3350 Harbor Blvd. - Ab802's carbon emissions?
3350 Harbor Blvd. - Ab802 reported 105 tCO₂e of greenhouse-gas emissions (2.0 kgCO₂e/ft²) for 2024.
Where is 3350 Harbor Blvd. - Ab802?
3350 Harbor Blvd. - Ab802 is at 3350 Harbor Boulevard, Costa Mesa, in Costa Mesa, California 92626. Its coordinates are 33.69282, -117.91858 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 3350 Harbor Blvd. - Ab802 and when was it built?
3350 Harbor Blvd. - Ab802 has 52,275 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1982 as its year built. It is classed as office.
Is 3350 Harbor Blvd. - Ab802 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, “3350 Harbor Blvd. - Ab802, Costa Mesa, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/3350-harbor-blvd-ab802-f30e362d (data as of July 9, 2026).