1901 E Alton
Office in California, CA · 1901 East Alton Avenue, Santa Ana · 92705
At a glance
1901 E Alton is a 66,800-square-foot office building at 1901 East Alton Avenue, Santa Ana in Santa Ana, California, built in 2000. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 53 out of 100 (grade D), a site energy-use intensity of 76.0 kBtu/ft² and 300 tCO₂e of greenhouse-gas emissions. That score is higher than 17% 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 | 53 (band D) |
| Site EUI | 76.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 300 tCO₂e |
| GHG intensity | 4.5 kgCO₂e/ft² |
| Electricity | 820,385 kWh |
| Natural gas | 21,480 therms |
| Gross floor area | 66,800 sq ft |
| Source record | california:11672268:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 53 | -19 | 76.0 kBtu/ft² | 300 tCO₂e |
| 2023 | 72 | -1 | 59.1 kBtu/ft² | 247 tCO₂e |
| 2022 | 73 | +6 | 60.1 kBtu/ft² | 245 tCO₂e |
| 2020 | 67 | +7 | 67.0 kBtu/ft² | 253 tCO₂e |
| 2019 | 60 | 72.5 kBtu/ft² | 299 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
- 1901 East Alton Avenue, Santa Ana
- City
- California
- State
- California
- ZIP
- 92705
- Coordinates
- 33.70269, -117.85130
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 1901 E Alton compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 1901 E Alton's ENERGY STAR score of 53 compares with an average of 75 across the 4,912 that report a score; it scores higher than 17% of them and lower than 82%. Its site EUI of 76.0 kBtu/ft² is about 35% 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 4.5 kgCO₂e/ft² is about 25% above the group average of 3.6 kgCO₂e/ft².
At 66,800 sq ft, it is about 56% below the average floor area of 151,937 sq ft for those buildings. It was built in 2000, 15 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 1901 E Alton's energy performance changed over time?
BuildingCensus holds 5 California disclosures for 1901 E Alton, covering report years 2019, 2020, 2022, 2023, 2024. Its ENERGY STAR score went from 60 in 2019 to 53 in 2024 (-7 points); its best year on file was 2022, at 73. Site EUI moved from 72.5 kBtu/ft² (2019) to 76.0 kBtu/ft² (2024), an 5% increase. Reported emissions went from 299 tCO₂e to 300 tCO₂e over the same span (up 0%).
What does an ENERGY STAR score of 53 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 53 means the building performs better than about 53% of its national peers. BuildingCensus bands the score into report-card grades; 53 falls in band D — lowest band (1–54). It sits 22 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. 1901 E Alton's 76.0 kBtu/ft² across 66,800 sq ft works out to about 5.1 billion Btu (1,488 MWh-equivalent) in 2024. The disclosure also reports 820,385 kWh of electricity and 21,480 therms of natural gas for the year.
Which law requires 1901 E Alton to report its energy use?
1901 E Alton 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:11672268:2024). 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
- B-3· 66,778 sq ft · score 96 (A)
- 1101 Investment· 66,721 sq ft · score 97 (A)
- 1840 S. Victory Blvd.· 66,712 sq ft · score 39 (D)
- West Office Building· 66,689 sq ft · score 90 (A)
- 260 Townsend Street· 66,682 sq ft · score 59 (C)
- Ncr 2 - North Central Hqs - With American River Fish Hatchery· 66,667 sq ft · EUI 94.4 kBtu/ft²
- 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 1901 E Alton's energy grade?
1901 E Alton scores 53 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 1901 E Alton use?
Its 2024 site energy-use intensity was 76.0 kBtu/ft² across 66,800 sq ft, including 820,385 kWh of electricity and 21,480 therms of natural gas.
What are 1901 E Alton's carbon emissions?
1901 E Alton reported 300 tCO₂e of greenhouse-gas emissions (4.5 kgCO₂e/ft²) for 2024.
Where is 1901 E Alton?
1901 E Alton is at 1901 East Alton Avenue, Santa Ana, in Santa Ana, California 92705. Its coordinates are 33.70269, -117.85130 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 1901 E Alton and when was it built?
1901 E Alton has 66,800 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2000 as its year built. It is classed as office.
Is 1901 E Alton 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, “1901 E Alton, Santa Ana, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/1901-e-alton-615cc055 (data as of July 9, 2026).