Airport Business Center - 50 Ocs
Office in California, CA · 50 Old Courthouse Square, Santa Rosa · 95404
At a glance
Airport Business Center - 50 Ocs is a 65,000-square-foot office building at 50 Old Courthouse Square, Santa Rosa in Santa Rosa, California, built in 1971. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 76 out of 100 (grade B), a site energy-use intensity of 39.2 kBtu/ft² and 168 tCO₂e of greenhouse-gas emissions. That score is higher than 36% 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 | 76 (band B) |
| Site EUI | 39.2 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 168 tCO₂e |
| GHG intensity | 2.6 kgCO₂e/ft² |
| Electricity | 741,687 kWh |
| Gross floor area | 65,000 sq ft |
| Source record | california:33613974:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 76 | +3 | 39.2 kBtu/ft² | 168 tCO₂e |
| 2023 | 73 | 41.8 kBtu/ft² | 188 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
- 50 Old Courthouse Square, Santa Rosa
- City
- California
- State
- California
- ZIP
- 95404
- Coordinates
- 38.44036, -122.71293
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Airport Business Center - 50 Ocs compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Airport Business Center - 50 Ocs's ENERGY STAR score of 76 compares with an average of 75 across the 4,912 that report a score; it scores higher than 36% of them and lower than 62%. Its site EUI of 39.2 kBtu/ft² is about 30% 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 2.6 kgCO₂e/ft² is about 28% below the group average of 3.6 kgCO₂e/ft².
At 65,000 sq ft, it is about 57% below the average floor area of 151,937 sq ft for those buildings. It was built in 1971, 14 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 Airport Business Center - 50 Ocs's energy performance changed over time?
BuildingCensus holds 2 California disclosures for Airport Business Center - 50 Ocs, covering report years 2023–2024. Its ENERGY STAR score went from 73 in 2023 to 76 in 2024 (+3 points). Site EUI moved from 41.8 kBtu/ft² (2023) to 39.2 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 188 tCO₂e to 168 tCO₂e over the same span (down 11%).
What does an ENERGY STAR score of 76 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 76 means the building performs better than about 76% of its national peers. BuildingCensus bands the score into report-card grades; 76 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. Airport Business Center - 50 Ocs's 39.2 kBtu/ft² across 65,000 sq ft works out to about 2.5 billion Btu (747 MWh-equivalent) in 2024. The disclosure also reports 741,687 kWh of electricity for the year.
Which law requires Airport Business Center - 50 Ocs to report its energy use?
Airport Business Center - 50 Ocs 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:33613974:2024). 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
- 601-605 W. California· 64,972 sq ft · EUI 23.6 kBtu/ft²
- 5333 Mission Center· 64,965 sq ft · score 100 (A)
- Craft 12626· 64,952 sq ft · EUI 32.4 kBtu/ft²
- Carlsbad Income Partners Llc· 64,948 sq ft · score 78 (B)
- 1265 Corona Pointe Court· 64,947 sq ft · score 80 (B)
- Security Badging / Arcc / Fedex Training Center· 64,947 sq ft · score 33 (D)
- 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 Airport Business Center - 50 Ocs's energy grade?
Airport Business Center - 50 Ocs scores 76 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 Airport Business Center - 50 Ocs use?
Its 2024 site energy-use intensity was 39.2 kBtu/ft² across 65,000 sq ft, including 741,687 kWh of electricity.
What are Airport Business Center - 50 Ocs's carbon emissions?
Airport Business Center - 50 Ocs reported 168 tCO₂e of greenhouse-gas emissions (2.6 kgCO₂e/ft²) for 2024.
Where is Airport Business Center - 50 Ocs?
Airport Business Center - 50 Ocs is at 50 Old Courthouse Square, Santa Rosa, in Santa Rosa, California 95404. Its coordinates are 38.44036, -122.71293 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Airport Business Center - 50 Ocs and when was it built?
Airport Business Center - 50 Ocs has 65,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1971 as its year built. It is classed as office.
Is Airport Business Center - 50 Ocs 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, “Airport Business Center - 50 Ocs, Santa Rosa, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/airport-business-center-50-ocs-399cb6d5 (data as of July 9, 2026).