Square One Office Plaza- Ruffner
Office in California, CA · 4542 Ruffner Street, San Diego · 92111
At a glance
Square One Office Plaza- Ruffner is a 55,690-square-foot office building at 4542 Ruffner Street, San Diego in San Diego, California, built in 1983. In its 2024 California benchmarking disclosure it reported 161 tCO₂e of greenhouse-gas emissions.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | 161 tCO₂e |
| GHG intensity | — |
| Electricity | 711,593 kWh |
| Gross floor area | 55,690 sq ft |
| Source record | california:53701892:2024 |
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
- 4542 Ruffner Street, San Diego
- City
- California
- State
- California
- ZIP
- 92111
- Coordinates
- 32.82327, -117.15750
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Square One Office Plaza- Ruffner compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide.
At 55,690 sq ft, it is about 63% below the average floor area of 151,937 sq ft for those buildings. Its 1983 construction date is close to 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.
Which law requires Square One Office Plaza- Ruffner to report its energy use?
Square One Office Plaza- Ruffner 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:53701892:2024). 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
- 310Thirdave· 55,676 sq ft · score 87 (A)
- Creekside Plaza· 55,659 sq ft · score 93 (A)
- Redondo Beach - Civic Center Pd & City Hall· 55,650 sq ft · score 54 (D)
- Noble Professional Center· 55,632 sq ft · score 40 (D)
- 602 E Huntington Dr, Monrovia, Ca 91016, Usa· 55,618 sq ft · score 81 (B)
- 7001, 7001 Village Drive, Buena Park· 55,593 sq ft · score 88 (A)
- 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 Square One Office Plaza- Ruffner's energy grade?
Square One Office Plaza- Ruffner did not report an ENERGY STAR score in its 2024 disclosure.
How much energy does Square One Office Plaza- Ruffner use?
No energy-use intensity was reported for 2024.
What are Square One Office Plaza- Ruffner's carbon emissions?
Square One Office Plaza- Ruffner reported 161 tCO₂e of greenhouse-gas emissions for 2024.
Where is Square One Office Plaza- Ruffner?
Square One Office Plaza- Ruffner is at 4542 Ruffner Street, San Diego, in San Diego, California 92111. Its coordinates are 32.82327, -117.15750 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Square One Office Plaza- Ruffner and when was it built?
Square One Office Plaza- Ruffner has 55,690 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1983 as its year built. It is classed as office.
Is Square One Office Plaza- Ruffner 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, “Square One Office Plaza- Ruffner, San Diego, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/square-one-office-plaza-ruffner-a422837b (data as of July 9, 2026).