Sage At Cupertino - (Sg09) Essex
Multifamily Housing in California, CA · 275 Calvert, Cupertino · 95014
At a glance
Sage At Cupertino - (Sg09) Essex is a 192,008-square-foot multifamily housing building at 275 Calvert, Cupertino in Cupertino, California, built in 1971. 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 37.6 kBtu/ft² and 407 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 | 37.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 407 tCO₂e |
| GHG intensity | 2.1 kgCO₂e/ft² |
| Electricity | 874,697 kWh |
| Gross floor area | 192,008 sq ft |
| Source record | california:6784438:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 89 | +3 | 37.6 kBtu/ft² | 407 tCO₂e |
| 2023 | 86 | -2 | 36.3 kBtu/ft² | 425 tCO₂e |
| 2022 | 88 | +6 | 34.9 kBtu/ft² | 424 tCO₂e |
| 2021 | 82 | +4 | 37.6 kBtu/ft² | 419 tCO₂e |
| 2020 | 78 | -9 | 40.3 kBtu/ft² | 463 tCO₂e |
| 2019 | 87 | 35.6 kBtu/ft² | 432 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
- 275 Calvert, Cupertino
- City
- California
- State
- California
- ZIP
- 95014
- Coordinates
- 37.31317, -122.07238
Within ~1 km
Nearby benchmarked buildings
Senior Living Community · 92,820 sq ft
See also: most efficient in California · biggest emitters
How does Sage At Cupertino - (Sg09) Essex 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. Sage At Cupertino - (Sg09) Essex'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 37.6 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 192,008 sq ft, it is about 27% above the average floor area of 150,919 sq ft for those buildings. It was built in 1971, 17 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 Sage At Cupertino - (Sg09) Essex's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Sage At Cupertino - (Sg09) Essex, covering report years 2019–2024. Its ENERGY STAR score went from 87 in 2019 to 89 in 2024 (+2 points). Site EUI moved from 35.6 kBtu/ft² (2019) to 37.6 kBtu/ft² (2024), an 6% increase. Reported emissions went from 432 tCO₂e to 407 tCO₂e over the same span (down 6%).
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. Sage At Cupertino - (Sg09) Essex's 37.6 kBtu/ft² across 192,008 sq ft works out to about 7.2 billion Btu (2,116 MWh-equivalent) in 2024. The disclosure also reports 874,697 kWh of electricity for the year.
Which law requires Sage At Cupertino - (Sg09) Essex to report its energy use?
Sage At Cupertino - (Sg09) Essex 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:6784438:2024). 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
- Shoreline (Harbor Grand) - Cannon· 192,000 sq ft · score 64 (C)
- Heights At Grand Terrace (Yardi)· 192,000 sq ft · score 60 (C)
- Ironwood Apartments (Rn78)· 192,000 sq ft · score 75 (B)
- 1115 N Citron St· 191,952 sq ft · score 100 (A)
- Winsted Apartments (Wn084)· 191,894 sq ft · score 67 (C)
- Willow View· 191,814 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 Sage At Cupertino - (Sg09) Essex's energy grade?
Sage At Cupertino - (Sg09) Essex 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 Sage At Cupertino - (Sg09) Essex use?
Its 2024 site energy-use intensity was 37.6 kBtu/ft² across 192,008 sq ft, including 874,697 kWh of electricity.
What are Sage At Cupertino - (Sg09) Essex's carbon emissions?
Sage At Cupertino - (Sg09) Essex reported 407 tCO₂e of greenhouse-gas emissions (2.1 kgCO₂e/ft²) for 2024.
Where is Sage At Cupertino - (Sg09) Essex?
Sage At Cupertino - (Sg09) Essex is at 275 Calvert, Cupertino, in Cupertino, California 95014. Its coordinates are 37.31317, -122.07238 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Sage At Cupertino - (Sg09) Essex and when was it built?
Sage At Cupertino - (Sg09) Essex has 192,008 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1971 as its year built. It is classed as multifamily housing.
Is Sage At Cupertino - (Sg09) Essex 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, “Sage At Cupertino - (Sg09) Essex, Cupertino, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/sage-at-cupertino-sg09-essex-7e1f6599 (data as of July 9, 2026).