Balboa Apartments
Multifamily Housing in California, CA · 151 South Bernardo Avenue, Sunnyvale · 94086
At a glance
Balboa Apartments is a 68,957-square-foot multifamily housing building at 151 South Bernardo Avenue, Sunnyvale in Sunnyvale, California, built in 1967. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 89 out of 100 (grade A), a site energy-use intensity of 46.5 kBtu/ft² and 167 tCO₂e of greenhouse-gas emissions. That score is higher than 45% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 89 (band A) |
| Site EUI | 46.5 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 167 tCO₂e |
| GHG intensity | 2.4 kgCO₂e/ft² |
| Electricity | 205,581 kWh |
| Natural gas | 22,755 therms |
| Gross floor area | 68,957 sq ft |
| Source record | california:6872061:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 89 | ±0 | 46.5 kBtu/ft² | 167 tCO₂e |
| 2023 | 89 | +1 | 41.6 kBtu/ft² | 176 tCO₂e |
| 2022 | 88 | -10 | 41.8 kBtu/ft² | 174 tCO₂e |
| 2021 | 98 | 32.7 kBtu/ft² | 139 tCO₂e | |
| 2020 | — | — | — | |
| 2019 | — | — | — |
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
- 151 South Bernardo Avenue, Sunnyvale
- City
- California
- State
- California
- ZIP
- 94086
- Coordinates
- 37.38349, -122.05342
Within ~1 km
Nearby benchmarked buildings
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- Reserve At Mountain View - 29861score 92
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- 280 N Bernardo Avescore 35
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See also: most efficient in California · biggest emitters
How does Balboa Apartments 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. Balboa Apartments's ENERGY STAR score of 89 compares with an average of 82 across the 9,612 that report a score; it scores higher than 45% of them and lower than 53%. Its site EUI of 46.5 kBtu/ft² is about 35% above the average of 34.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 2.4 kgCO₂e/ft² is about 16% above the group average of 2.1 kgCO₂e/ft².
At 68,957 sq ft, it is about half of the average floor area of 150,919 sq ft for those buildings. It was built in 1967, 21 years earlier 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.
How has Balboa Apartments's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Balboa Apartments, covering report years 2019–2024. Its ENERGY STAR score went from 98 in 2021 to 89 in 2024 (-9 points); its best year on file was 2021, at 98. Site EUI moved from 32.7 kBtu/ft² (2021) to 46.5 kBtu/ft² (2024), an 42% increase. Reported emissions went from 139 tCO₂e to 167 tCO₂e over the same span (up 21%).
What does an ENERGY STAR score of 89 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 89 means the building performs better than about 89% of its national peers. BuildingCensus bands the score into report-card grades; 89 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. Balboa Apartments's 46.5 kBtu/ft² across 68,957 sq ft works out to about 3.2 billion Btu (940 MWh-equivalent) in 2024. The disclosure also reports 205,581 kWh of electricity and 22,755 therms of natural gas for the year.
Which law requires Balboa Apartments to report its energy use?
Balboa Apartments 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:6872061:2024). 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 multifamily housing buildings in California
- Maplewood: Maplewood· 68,956 sq ft · score 100 (A)
- Mission Plaza (Ms89)· 68,948 sq ft · score 25 (D)
- La Vereda· 68,943 sq ft · score 91 (A)
- Lilly Affordable Communities, Lp· 68,940 sq ft · score 95 (A)
- Camelot Apartments· 68,925 sq ft · score 74 (B)
- Avenida Espana Gardens· 68,904 sq ft · score 88 (A)
- 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 Balboa Apartments's energy grade?
Balboa Apartments scores 89 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 Balboa Apartments use?
Its 2024 site energy-use intensity was 46.5 kBtu/ft² across 68,957 sq ft, including 205,581 kWh of electricity and 22,755 therms of natural gas.
What are Balboa Apartments's carbon emissions?
Balboa Apartments reported 167 tCO₂e of greenhouse-gas emissions (2.4 kgCO₂e/ft²) for 2024.
Where is Balboa Apartments?
Balboa Apartments is at 151 South Bernardo Avenue, Sunnyvale, in Sunnyvale, California 94086. Its coordinates are 37.38349, -122.05342 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Balboa Apartments and when was it built?
Balboa Apartments has 68,957 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1967 as its year built. It is classed as multifamily housing.
Is Balboa Apartments 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, “Balboa Apartments, Sunnyvale, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/balboa-apartments-f5a8230b (data as of July 9, 2026).