Ambassador
Multifamily Housing in California, CA · 2100 West Commonwealth Avenue, Fullerton · 92833
At a glance
Ambassador is a 70,756-square-foot multifamily housing building at 2100 West Commonwealth Avenue, Fullerton in Fullerton, California, built in 1962. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 98 out of 100 (grade A) and 239 tCO₂e of greenhouse-gas emissions. That score is higher than 66% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 98 (band A) |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | 239 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 449,981 kWh |
| Natural gas | 25,804 therms |
| Gross floor area | 70,756 sq ft |
| Source record | california:6896154:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 98 | -2 | — | 239 tCO₂e |
| 2023 | 100 | — | 146 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
- 2100 West Commonwealth Avenue, Fullerton
- City
- California
- State
- California
- ZIP
- 92833
- Coordinates
- 33.86952, -117.96645
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Ambassador compare with other multifamily housing buildings in California?
The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. Ambassador's ENERGY STAR score of 98 compares with an average of 82 across the 9,612 that report a score; it scores higher than 66% of them and lower than 29%. Its emissions intensity of 3.4 kgCO₂e/ft² is about 61% above the group average of 2.1 kgCO₂e/ft².
At 70,756 sq ft, it is about half of the average floor area of 150,919 sq ft for those buildings. It was built in 1962, 26 years earlier than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Ambassador's energy performance changed over time?
BuildingCensus holds 2 California disclosures for Ambassador, covering report years 2023–2024. Its ENERGY STAR score went from 100 in 2023 to 98 in 2024 (-2 points); its best year on file was 2023, at 100. Reported emissions went from 146 tCO₂e to 239 tCO₂e over the same span (up 64%).
What does an ENERGY STAR score of 98 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 98 means the building performs better than about 98% of its national peers. BuildingCensus bands the score into report-card grades; 98 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.
Which law requires Ambassador to report its energy use?
Ambassador 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:6896154:2024). 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 multifamily housing buildings in California
- 9070 E Florence Ave, Downey, Ca 90240, Usa· 70,750 sq ft · score 81 (B)
- New Genesis: New Genesis· 70,749 sq ft · score 100 (A)
- 5173 Diamond Heights - Citiscape· 70,748 sq ft · score 100 (A)
- Citronica Two· 70,746 sq ft
- La Villa Lakes· 70,737 sq ft · score 51 (D)
- 1070 N Lake Ave· 70,737 sq ft · score 87 (A)
- Multifamily Housing buildings in California· 10,630 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 Ambassador's energy grade?
Ambassador scores 98 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 Ambassador use?
No energy-use intensity was reported for 2024.
What are Ambassador's carbon emissions?
Ambassador reported 239 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2024.
Where is Ambassador?
Ambassador is at 2100 West Commonwealth Avenue, Fullerton, in Fullerton, California 92833. Its coordinates are 33.86952, -117.96645 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Ambassador and when was it built?
Ambassador has 70,756 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1962 as its year built. It is classed as multifamily housing.
Is Ambassador 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, “Ambassador, Fullerton, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/ambassador-067b4255 (data as of July 9, 2026).