At a glance
APEX Office Park - C is a 57,265-square-foot office building at 5675 Ruffin Rd in San Diego, California, built in 1999. In its 2022 San Diego benchmarking disclosure it reported an ENERGY STAR score of 82 out of 100 (grade B) and a site energy-use intensity of 48.0 kBtu/ft². That score is higher than 44% of the 259 scored office buildings in San Diego.
Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12) · reporting year 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 82 (band B) |
| Site EUI | 48.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Gross floor area | 57,265 sq ft |
| Source record | san_diego:100271:2022 |
Compliance context
Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)
San Diego's ordinance requires annual benchmarking for commercial buildings over 50,000 sq ft, with civil penalties for buildings that fail to report.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 5675 Ruffin Rd
- City
- San Diego
- State
- California
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in San Diego · biggest emitters
How does APEX Office Park - C compare with other office buildings in San Diego?
The latest disclosures cover 356 office buildings in San Diego, out of 2,567 buildings citywide. APEX Office Park - C's ENERGY STAR score of 82 compares with an average of 75 across the 259 that report a score; it scores higher than 44% of them and lower than 54%. Its site EUI of 48.0 kBtu/ft² is about 12% below the average of 54.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 57,265 sq ft, it is about 56% below the average floor area of 130,949 sq ft for those buildings. It was built in 1999, 8 years later than the group's average year built (1991). 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.
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 San Diego, 73% 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. APEX Office Park - C's 48.0 kBtu/ft² across 57,265 sq ft works out to about 2.7 billion Btu (806 MWh-equivalent) in 2022.
Which law requires APEX Office Park - C to report its energy use?
APEX Office Park - C reports under the Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12), the legal basis of San Diego's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2022 disclosure (source record san_diego:100271:2022). San Diego's ordinance requires annual benchmarking for commercial buildings over 50,000 sq ft, with civil penalties for buildings that fail to report.
More office buildings in San Diego
- StoneCrest- 9635· 57,208 sq ft · score 84 (B)
- 4283, 4283 El Cajon Blvd· 57,136 sq ft · score 93 (A)
- Cornerstone Plaza 6160· 57,044 sq ft · EUI 27.0 kBtu/ft²
- 12680 High Bluff· 57,000 sq ft · score 83 (B)
- Camino3333· 56,847 sq ft · score 89 (A)
- Torrey Reserve - North Court II· 56,750 sq ft · score 66 (C)
- Office buildings in San Diego· 356 benchmarked
- All San Diego benchmarked buildings· Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)
- Most efficient large buildings in San Diego
- Least efficient large buildings in San Diego
- Biggest emitters in San Diego
Frequently asked questions
What is APEX Office Park - C's energy grade?
APEX Office Park - C scores 82 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2022 San Diego disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does APEX Office Park - C use?
Its 2022 site energy-use intensity was 48.0 kBtu/ft² across 57,265 sq ft.
What are APEX Office Park - C's carbon emissions?
No greenhouse-gas emissions figure was reported for 2022.
Where is APEX Office Park - C?
APEX Office Park - C is at 5675 Ruffin Rd, in San Diego, California.
How big is APEX Office Park - C and when was it built?
APEX Office Park - C has 57,265 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1999 as its year built. It is classed as office.
Is APEX Office Park - C covered by the Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)?
Yes — it appears in the 2022 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12).
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About this data
Source: Building Energy Benchmarking (Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “APEX Office Park - C, San Diego, California — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/san-diego/apex-office-park-c-5f6a8cd8 (data as of July 9, 2026).