34050 Westchester Terrace
Multifamily Housing in California, CA · 34050 Westchester Terrace, Fremont · 94555
At a glance
34050 Westchester Terrace is a 140,000-square-foot multifamily housing building at 34050 Westchester Terrace, Fremont in Fremont, California, built in 1985. In its 2021 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 1.3 kBtu/ft² and 10 tCO₂e of greenhouse-gas emissions. That score is higher than 76% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2021
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 1.3 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 10 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 48,993 kWh |
| Natural gas | 39 therms |
| Gross floor area | 140,000 sq ft |
| Source record | california:11234931:2021 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2021latest | 100 | ±0 | 1.3 kBtu/ft² | 10 tCO₂e |
| 2020 | 100 | ±0 | 1.3 kBtu/ft² | 12 tCO₂e |
| 2019 | 100 | 1.4 kBtu/ft² | 13 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
- 34050 Westchester Terrace, Fremont
- City
- California
- State
- California
- ZIP
- 94555
- Coordinates
- 37.57727, -122.04340
Within ~1 km
Nearby benchmarked buildings
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- 34047 Fremont Boulevard - Ab802score 95
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See also: most efficient in California · biggest emitters
How does 34050 Westchester Terrace 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. 34050 Westchester Terrace's ENERGY STAR score of 100 compares with an average of 82 across the 9,612 that report a score; it scores higher than 76% of them. Its site EUI of 1.3 kBtu/ft² is about 96% below the average of 34.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.1 kgCO₂e/ft² is about 95% below the group average of 2.1 kgCO₂e/ft².
At 140,000 sq ft, it is roughly in line with the average floor area of 150,919 sq ft for those buildings. It was built in 1985, 3 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 34050 Westchester Terrace's energy performance changed over time?
BuildingCensus holds 3 California disclosures for 34050 Westchester Terrace, covering report years 2019–2021. Its ENERGY STAR score was 100 in both 2019 and 2021. Site EUI moved from 1.4 kBtu/ft² (2019) to 1.3 kBtu/ft² (2021), a 7% decrease. Reported emissions went from 13 tCO₂e to 10 tCO₂e over the same span (down 23%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. 34050 Westchester Terrace's 1.3 kBtu/ft² across 140,000 sq ft works out to about 0.2 billion Btu (53 MWh-equivalent) in 2021. The disclosure also reports 48,993 kWh of electricity and 39 therms of natural gas for the year.
Which law requires 34050 Westchester Terrace to report its energy use?
34050 Westchester Terrace 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 2021 disclosure (source record california:11234931:2021). 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
- Catherine Phase Ii (Ct160) (Not)· 139,989 sq ft · score 100 (A)
- Almaden Terrace· 139,950 sq ft · score 62 (C)
- Venn On Market (Ve100)· 139,938 sq ft · score 98 (A)
- Branham House· 139,822 sq ft · score 61 (C)
- Hismen Hin-Nu Terrace: Hhn· 139,820 sq ft · score 97 (A)
- 1724 Sunnyhills Drive, Milpitas, California 95035· 139,791 sq ft · score 100 (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 34050 Westchester Terrace's energy grade?
34050 Westchester Terrace scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2021 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 34050 Westchester Terrace use?
Its 2021 site energy-use intensity was 1.3 kBtu/ft² across 140,000 sq ft, including 48,993 kWh of electricity and 39 therms of natural gas.
What are 34050 Westchester Terrace's carbon emissions?
34050 Westchester Terrace reported 10 tCO₂e of greenhouse-gas emissions (0.1 kgCO₂e/ft²) for 2021.
Where is 34050 Westchester Terrace?
34050 Westchester Terrace is at 34050 Westchester Terrace, Fremont, in Fremont, California 94555. Its coordinates are 37.57727, -122.04340 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 34050 Westchester Terrace and when was it built?
34050 Westchester Terrace has 140,000 sq ft of gross floor area, as reported in its 2021 disclosure. The disclosure lists 1985 as its year built. It is classed as multifamily housing.
Is 34050 Westchester Terrace covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2021 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, “34050 Westchester Terrace, Fremont, California — 2021 benchmarking disclosure”, https://buildingcensus.com/buildings/california/34050-westchester-terrace-246df9dc (data as of July 9, 2026).