Ca3611 - Tustin Santa Ana Medical Offices
Medical Office in California, CA · 1900 East 4Th Street, Santa Ana · 92701
At a glance
Ca3611 - Tustin Santa Ana Medical Offices is a 72,241-square-foot medical office at 1900 East 4Th Street, Santa Ana in Santa Ana, California, built in 1978. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 65 out of 100 (grade C), a site energy-use intensity of 80.9 kBtu/ft² and 368 tCO₂e of greenhouse-gas emissions. That score is higher than 45% of the 546 scored medical office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 65 (band C) |
| Site EUI | 80.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 368 tCO₂e |
| GHG intensity | 5.1 kgCO₂e/ft² |
| Electricity | 1,315,770 kWh |
| Natural gas | 13,155 therms |
| Gross floor area | 72,241 sq ft |
| Source record | california:2551376:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 65 | +1 | 80.9 kBtu/ft² | 368 tCO₂e |
| 2023 | 64 | -3 | 83.5 kBtu/ft² | 400 tCO₂e |
| 2022 | 67 | -6 | 81.4 kBtu/ft² | 387 tCO₂e |
| 2021 | 73 | +16 | 76.8 kBtu/ft² | 327 tCO₂e |
| 2020 | 57 | ±0 | 75.7 kBtu/ft² | 350 tCO₂e |
| 2018 | 57 | 73.6 kBtu/ft² | 355 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
- 1900 East 4Th Street, Santa Ana
- City
- California
- State
- California
- ZIP
- 92701
- Coordinates
- 33.74777, -117.83929
Within ~1 km
Nearby benchmarked buildings
- Metro East Senior (Me145)score —
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- 1851 E. First Streetscore 93
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- Nineteen01(Ni016)score 57
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Office · 244,865 sq ft
- Lake Diannescore 29
Multifamily Housing · 235,636 sq ft
- Park Center 400score 74
Office · 124,878 sq ft
See also: most efficient in California · biggest emitters
How does Ca3611 - Tustin Santa Ana Medical Offices compare with other medical office buildings in California?
The latest disclosures cover 602 medical office buildings in California, out of 40,029 buildings citywide. Ca3611 - Tustin Santa Ana Medical Offices's ENERGY STAR score of 65 compares with an average of 63 across the 546 that report a score; it scores higher than 45% of them and lower than 55%. Its site EUI of 80.9 kBtu/ft² is about 14% below the average of 94.3 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 5.1 kgCO₂e/ft² is roughly in line with the group average of 5.6 kgCO₂e/ft².
At 72,241 sq ft, it is about 28% below the average floor area of 100,847 sq ft for those buildings. It was built in 1978, 13 years earlier than the group's average year built (1991). Across all 24 jurisdictions BuildingCensus covers, the 1,266 medical office buildings average an ENERGY STAR score of 64 and a site EUI of 92.2 kBtu/ft².
How has Ca3611 - Tustin Santa Ana Medical Offices's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Ca3611 - Tustin Santa Ana Medical Offices, covering report years 2018, 2020, 2021, 2022, 2023, 2024. Its ENERGY STAR score went from 57 in 2018 to 65 in 2024 (+8 points); its best year on file was 2021, at 73. Site EUI moved from 73.6 kBtu/ft² (2018) to 80.9 kBtu/ft² (2024), an 10% increase. Reported emissions went from 355 tCO₂e to 368 tCO₂e over the same span (up 4%).
What does an ENERGY STAR score of 65 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 65 means the building performs better than about 65% of its national peers. BuildingCensus bands the score into report-card grades; 65 falls in band C — below median (55–69). It sits 10 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. Ca3611 - Tustin Santa Ana Medical Offices's 80.9 kBtu/ft² across 72,241 sq ft works out to about 5.8 billion Btu (1,713 MWh-equivalent) in 2024. The disclosure also reports 1,315,770 kWh of electricity and 13,155 therms of natural gas for the year.
Which law requires Ca3611 - Tustin Santa Ana Medical Offices to report its energy use?
Ca3611 - Tustin Santa Ana Medical Offices 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:2551376:2024). 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 medical office buildings in California
- Pih Health, Downey Campus Mob· 72,193 sq ft · score 67 (C)
- Kagr Escondido, Llc· 72,046 sq ft · score 100 (A)
- Palomar Health Outpatient Center Iii· 72,000 sq ft · score 100 (A)
- Rb Medical Plaza· 71,735 sq ft · score 99 (A)
- Cpmc Pacific Campus - Annex Building· 71,616 sq ft · score 100 (A)
- Sutter Health-3140 Kearney Street· 71,612 sq ft · score 72 (B)
- Medical Office buildings in California· 602 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 Ca3611 - Tustin Santa Ana Medical Offices's energy grade?
Ca3611 - Tustin Santa Ana Medical Offices scores 65 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Ca3611 - Tustin Santa Ana Medical Offices use?
Its 2024 site energy-use intensity was 80.9 kBtu/ft² across 72,241 sq ft, including 1,315,770 kWh of electricity and 13,155 therms of natural gas.
What are Ca3611 - Tustin Santa Ana Medical Offices's carbon emissions?
Ca3611 - Tustin Santa Ana Medical Offices reported 368 tCO₂e of greenhouse-gas emissions (5.1 kgCO₂e/ft²) for 2024.
Where is Ca3611 - Tustin Santa Ana Medical Offices?
Ca3611 - Tustin Santa Ana Medical Offices is at 1900 East 4Th Street, Santa Ana, in Santa Ana, California 92701. Its coordinates are 33.74777, -117.83929 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Ca3611 - Tustin Santa Ana Medical Offices and when was it built?
Ca3611 - Tustin Santa Ana Medical Offices has 72,241 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1978 as its year built. It is classed as medical office.
Is Ca3611 - Tustin Santa Ana Medical Offices 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, “Ca3611 - Tustin Santa Ana Medical Offices, Santa Ana, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/ca3611-tustin-santa-ana-medical-offices-a18827ae (data as of July 9, 2026).