Blum Courtyard Associates
Office in California, CA · 1303 West Optical Drive, Irwindale · 91702
At a glance
Blum Courtyard Associates is a 80,639-square-foot office building at 1303 West Optical Drive, Irwindale in Irwindale, California, built in 1978. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 82 out of 100 (grade B), a site energy-use intensity of 33.0 kBtu/ft² and 184 tCO₂e of greenhouse-gas emissions. That score is higher than 46% 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 | 82 (band B) |
| Site EUI | 33.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 184 tCO₂e |
| GHG intensity | 2.3 kgCO₂e/ft² |
| Electricity | 813,603 kWh |
| Gross floor area | 80,639 sq ft |
| Source record | california:27682300:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 82 | ±0 | 33.0 kBtu/ft² | 184 tCO₂e |
| 2023 | 82 | +9 | 34.5 kBtu/ft² | 194 tCO₂e |
| 2022 | 73 | 39.0 kBtu/ft² | 223 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
- 1303 West Optical Drive, Irwindale
- City
- California
- State
- California
- ZIP
- 91702
- Coordinates
- 34.12902, -117.92829
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Blum Courtyard Associates compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Blum Courtyard Associates's ENERGY STAR score of 82 compares with an average of 75 across the 4,912 that report a score; it scores higher than 46% of them and lower than 52%. Its site EUI of 33.0 kBtu/ft² is about 41% 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 2.3 kgCO₂e/ft² is about 37% below the group average of 3.6 kgCO₂e/ft².
At 80,639 sq ft, it is about half of the average floor area of 151,937 sq ft for those buildings. It was built in 1978, 7 years earlier 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 Blum Courtyard Associates's energy performance changed over time?
BuildingCensus holds 3 California disclosures for Blum Courtyard Associates, covering report years 2022–2024. Its ENERGY STAR score went from 73 in 2022 to 82 in 2024 (+9 points); its best year on file was 2023, at 82. Site EUI moved from 39.0 kBtu/ft² (2022) to 33.0 kBtu/ft² (2024), a 15% decrease. Reported emissions went from 223 tCO₂e to 184 tCO₂e over the same span (down 18%).
What does an ENERGY STAR score of 82 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 82 means the building performs better than about 82% of its national peers. BuildingCensus bands the score into report-card grades; 82 falls in band B — above median (70–84). 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. Blum Courtyard Associates's 33.0 kBtu/ft² across 80,639 sq ft works out to about 2.7 billion Btu (780 MWh-equivalent) in 2024. The disclosure also reports 813,603 kWh of electricity for the year.
Which law requires Blum Courtyard Associates to report its energy use?
Blum Courtyard Associates 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:27682300:2024). 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.
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Frequently asked questions
What is Blum Courtyard Associates's energy grade?
Blum Courtyard Associates scores 82 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Blum Courtyard Associates use?
Its 2024 site energy-use intensity was 33.0 kBtu/ft² across 80,639 sq ft, including 813,603 kWh of electricity.
What are Blum Courtyard Associates's carbon emissions?
Blum Courtyard Associates reported 184 tCO₂e of greenhouse-gas emissions (2.3 kgCO₂e/ft²) for 2024.
Where is Blum Courtyard Associates?
Blum Courtyard Associates is at 1303 West Optical Drive, Irwindale, in Irwindale, California 91702. Its coordinates are 34.12902, -117.92829 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Blum Courtyard Associates and when was it built?
Blum Courtyard Associates has 80,639 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1978 as its year built. It is classed as office.
Is Blum Courtyard Associates 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, “Blum Courtyard Associates, Irwindale, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/blum-courtyard-associates-f7618ace (data as of July 9, 2026).