Grand Oak
Multifamily Housing in California, CA · 99 Oak Avenue, South San Francisco · 94080
At a glance
Grand Oak is a 41,600-square-foot multifamily housing building at 99 Oak Avenue, South San Francisco in South San Francisco, California, built in 2007. In its 2023 California benchmarking disclosure it reported an ENERGY STAR score of 93 out of 100 (grade A), a site energy-use intensity of 34.4 kBtu/ft² and 86 tCO₂e of greenhouse-gas emissions. That score is higher than 53% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 93 (band A) |
| Site EUI | 34.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 86 tCO₂e |
| GHG intensity | 2.1 kgCO₂e/ft² |
| Electricity | 171,302 kWh |
| Natural gas | 8,348 therms |
| Gross floor area | 41,600 sq ft |
| Source record | california:5094177:2023 |
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
- 99 Oak Avenue, South San Francisco
- City
- California
- State
- California
- ZIP
- 94080
- Coordinates
- 37.65898, -122.43296
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Grand Oak compare with other multifamily housing buildings in California?
The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. Grand Oak's ENERGY STAR score of 93 compares with an average of 82 across the 9,612 that report a score; it scores higher than 53% of them and lower than 45%. Its site EUI of 34.4 kBtu/ft² is roughly in line with the average of 34.4 kBtu/ft². Its emissions intensity of 2.1 kgCO₂e/ft² is roughly in line with the group average of 2.1 kgCO₂e/ft².
At 41,600 sq ft, it is about 72% below the average floor area of 150,919 sq ft for those buildings. It was built in 2007, 19 years later than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
What does an ENERGY STAR score of 93 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 93 means the building performs better than about 93% of its national peers. BuildingCensus bands the score into report-card grades; 93 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. Grand Oak's 34.4 kBtu/ft² across 41,600 sq ft works out to about 1.4 billion Btu (419 MWh-equivalent) in 2023. The disclosure also reports 171,302 kWh of electricity and 8,348 therms of natural gas for the year.
Which law requires Grand Oak to report its energy use?
Grand Oak 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 2023 disclosure (source record california:5094177:2023). 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 multifamily housing buildings in California
- 14340 Addison Street· 41,500 sq ft · score 86 (A)
- 14350 Addison Street· 41,500 sq ft · score 82 (B)
- Weber Gardens· 41,472 sq ft · EUI 27.3 kBtu/ft²
- Riviera Family Apartments· 41,408 sq ft · score 9 (D)
- Metro Center· 41,404 sq ft · score 57 (C)
- 13052 Dronfield Ave· 41,000 sq ft · EUI 20.4 kBtu/ft²
- Multifamily Housing buildings in California· 10,630 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 Grand Oak's energy grade?
Grand Oak scores 93 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Grand Oak use?
Its 2023 site energy-use intensity was 34.4 kBtu/ft² across 41,600 sq ft, including 171,302 kWh of electricity and 8,348 therms of natural gas.
What are Grand Oak's carbon emissions?
Grand Oak reported 86 tCO₂e of greenhouse-gas emissions (2.1 kgCO₂e/ft²) for 2023.
Where is Grand Oak?
Grand Oak is at 99 Oak Avenue, South San Francisco, in South San Francisco, California 94080. Its coordinates are 37.65898, -122.43296 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Grand Oak and when was it built?
Grand Oak has 41,600 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2007 as its year built. It is classed as multifamily housing.
Is Grand Oak covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2023 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, “Grand Oak, South San Francisco, California — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/california/grand-oak-9e8d1f24 (data as of July 9, 2026).