The Square 600
Office in California, CA · 600 South Main Street, Orange · 92868
At a glance
The Square 600 is a 158,569-square-foot office building at 600 South Main Street, Orange in Orange, California, built in 1961. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 87 out of 100 (grade A), a site energy-use intensity of 38.3 kBtu/ft² and 392 tCO₂e of greenhouse-gas emissions. That score is higher than 56% 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 | 87 (band A) |
| Site EUI | 38.3 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 392 tCO₂e |
| GHG intensity | 2.5 kgCO₂e/ft² |
| Electricity | 1,553,423 kWh |
| Natural gas | 7,613 therms |
| Gross floor area | 158,569 sq ft |
| Source record | california:2701660:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 87 | +6 | 38.3 kBtu/ft² | 392 tCO₂e |
| 2023 | 81 | -1 | 42.9 kBtu/ft² | 471 tCO₂e |
| 2022 | 82 | -10 | 33.8 kBtu/ft² | 339 tCO₂e |
| 2021 | 92 | +8 | 27.9 kBtu/ft² | 251 tCO₂e |
| 2020 | 84 | -16 | 36.5 kBtu/ft² | 351 tCO₂e |
| 2019 | 100 | +6 | 40.7 kBtu/ft² | 376 tCO₂e |
| 2018 | 94 | 64.7 kBtu/ft² | 638 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
- 600 South Main Street, Orange
- City
- California
- State
- California
- ZIP
- 92868
- Coordinates
- 33.77871, -117.86800
Within ~1 km
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See also: most efficient in California · biggest emitters
How does The Square 600 compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. The Square 600's ENERGY STAR score of 87 compares with an average of 75 across the 4,912 that report a score; it scores higher than 56% of them and lower than 41%. Its site EUI of 38.3 kBtu/ft² is about 32% 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 2.5 kgCO₂e/ft² is about 31% below the group average of 3.6 kgCO₂e/ft².
At 158,569 sq ft, it is roughly in line with the average floor area of 151,937 sq ft for those buildings. It was built in 1961, 24 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 The Square 600's energy performance changed over time?
BuildingCensus holds 7 California disclosures for The Square 600, covering report years 2018–2024. Its ENERGY STAR score went from 94 in 2018 to 87 in 2024 (-7 points); its best year on file was 2019, at 100. Site EUI moved from 64.7 kBtu/ft² (2018) to 38.3 kBtu/ft² (2024), a 41% decrease. Reported emissions went from 638 tCO₂e to 392 tCO₂e over the same span (down 39%).
What does an ENERGY STAR score of 87 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 87 means the building performs better than about 87% of its national peers. BuildingCensus bands the score into report-card grades; 87 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.
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. The Square 600's 38.3 kBtu/ft² across 158,569 sq ft works out to about 6.1 billion Btu (1,780 MWh-equivalent) in 2024. The disclosure also reports 1,553,423 kWh of electricity and 7,613 therms of natural gas for the year.
Which law requires The Square 600 to report its energy use?
The Square 600 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:2701660:2024). 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
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- 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 The Square 600's energy grade?
The Square 600 scores 87 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 The Square 600 use?
Its 2024 site energy-use intensity was 38.3 kBtu/ft² across 158,569 sq ft, including 1,553,423 kWh of electricity and 7,613 therms of natural gas.
What are The Square 600's carbon emissions?
The Square 600 reported 392 tCO₂e of greenhouse-gas emissions (2.5 kgCO₂e/ft²) for 2024.
Where is The Square 600?
The Square 600 is at 600 South Main Street, Orange, in Orange, California 92868. Its coordinates are 33.77871, -117.86800 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is The Square 600 and when was it built?
The Square 600 has 158,569 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1961 as its year built. It is classed as office.
Is The Square 600 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, “The Square 600, Orange, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/the-square-600-fe6147f1 (data as of July 9, 2026).