31449101 - Regents Medical Center
Medical Office in California, CA · 4150 Regents Park Row, La Jolla · 92037
At a glance
31449101 - Regents Medical Center is a 76,154-square-foot medical office at 4150 Regents Park Row, La Jolla in La Jolla, California, built in 1989. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 46 out of 100 (grade D), a site energy-use intensity of 155.1 kBtu/ft² and 726 tCO₂e of greenhouse-gas emissions. That score is higher than 28% 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 | 46 (band D) |
| Site EUI | 155.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 726 tCO₂e |
| GHG intensity | 9.5 kgCO₂e/ft² |
| Electricity | 2,270,190 kWh |
| Gross floor area | 76,154 sq ft |
| Source record | california:4615995:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 46 | +45 | 155.1 kBtu/ft² | 726 tCO₂e |
| 2023 | 1 | ±0 | 170.9 kBtu/ft² | 850 tCO₂e |
| 2022 | 1 | ±0 | 163.9 kBtu/ft² | 792 tCO₂e |
| 2021 | 1 | -99 | 177.2 kBtu/ft² | 775 tCO₂e |
| 2020 | 100 | 11.9 kBtu/ft² | 59 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
- 4150 Regents Park Row, La Jolla
- City
- California
- State
- California
- ZIP
- 92037
- Coordinates
- 32.87303, -117.21731
Within ~1 km
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- Palisade At Westfield Utcscore 95
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- Regents La Jolla Hoascore 17
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See also: most efficient in California · biggest emitters
How does 31449101 - Regents Medical Center compare with other medical office buildings in California?
The latest disclosures cover 602 medical office buildings in California, out of 40,029 buildings citywide. 31449101 - Regents Medical Center's ENERGY STAR score of 46 compares with an average of 63 across the 546 that report a score; it scores higher than 28% of them and lower than 70%. Its site EUI of 155.1 kBtu/ft² is about 64% above the average of 94.3 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 9.5 kgCO₂e/ft² is about 70% above the group average of 5.6 kgCO₂e/ft².
At 76,154 sq ft, it is about 24% below the average floor area of 100,847 sq ft for those buildings. Its 1989 construction date is close to 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 31449101 - Regents Medical Center's energy performance changed over time?
BuildingCensus holds 5 California disclosures for 31449101 - Regents Medical Center, covering report years 2020–2024. Its ENERGY STAR score went from 100 in 2020 to 46 in 2024 (-54 points); its best year on file was 2020, at 100. Site EUI moved from 11.9 kBtu/ft² (2020) to 155.1 kBtu/ft² (2024), an 1203% increase. Reported emissions went from 59 tCO₂e to 726 tCO₂e over the same span (up 1127%).
What does an ENERGY STAR score of 46 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 46 means the building performs better than about 46% of its national peers. BuildingCensus bands the score into report-card grades; 46 falls in band D — lowest band (1–54). It sits 29 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. 31449101 - Regents Medical Center's 155.1 kBtu/ft² across 76,154 sq ft works out to about 11.8 billion Btu (3,462 MWh-equivalent) in 2024. The disclosure also reports 2,270,190 kWh of electricity for the year.
Which law requires 31449101 - Regents Medical Center to report its energy use?
31449101 - Regents Medical Center 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:4615995:2024). 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
- Kaiser Permanente - Ca2521 - Panorama City Mob 5· 75,985 sq ft · score 1 (D)
- 6828 - Sutter Medical Center· 75,898 sq ft · score 54 (D)
- Ca5521 - Baldwin Park Medical Office· 75,740 sq ft · score 100 (A)
- Education Center· 75,722 sq ft · score 84 (B)
- Santa Rosa Mob· 75,649 sq ft · score 78 (B)
- Sutter Health-2720 Low Court· 75,579 sq ft · score 96 (A)
- 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 31449101 - Regents Medical Center's energy grade?
31449101 - Regents Medical Center scores 46 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 31449101 - Regents Medical Center use?
Its 2024 site energy-use intensity was 155.1 kBtu/ft² across 76,154 sq ft, including 2,270,190 kWh of electricity.
What are 31449101 - Regents Medical Center's carbon emissions?
31449101 - Regents Medical Center reported 726 tCO₂e of greenhouse-gas emissions (9.5 kgCO₂e/ft²) for 2024.
Where is 31449101 - Regents Medical Center?
31449101 - Regents Medical Center is at 4150 Regents Park Row, La Jolla, in La Jolla, California 92037. Its coordinates are 32.87303, -117.21731 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 31449101 - Regents Medical Center and when was it built?
31449101 - Regents Medical Center has 76,154 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1989 as its year built. It is classed as medical office.
Is 31449101 - Regents Medical Center 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, “31449101 - Regents Medical Center, La Jolla, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/31449101-regents-medical-center-0f9e02ba (data as of July 9, 2026).