Summerhill Park - Essex (Sm189)
Multifamily Housing in California, CA · 972 Corte Madera Avenue, Sunnyvale · 94085
At a glance
Summerhill Park - Essex (Sm189) is a 86,110-square-foot multifamily housing building at 972 Corte Madera Avenue, Sunnyvale in Sunnyvale, California, built in 1988. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 98 out of 100 (grade A), a site energy-use intensity of 27.5 kBtu/ft² and 135 tCO₂e of greenhouse-gas emissions. That score is higher than 66% 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 | 98 (band A) |
| Site EUI | 27.5 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 135 tCO₂e |
| GHG intensity | 1.6 kgCO₂e/ft² |
| Electricity | 331,924 kWh |
| Natural gas | 11,332 therms |
| Gross floor area | 86,110 sq ft |
| Source record | california:23359008:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 98 | +1 | 27.5 kBtu/ft² | 135 tCO₂e |
| 2023 | 97 | +2 | 26.4 kBtu/ft² | 147 tCO₂e |
| 2022 | 95 | 27.9 kBtu/ft² | 156 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 972 Corte Madera Avenue, Sunnyvale
- City
- California
- State
- California
- ZIP
- 94085
- Coordinates
- 37.39053, -122.04337
Within ~1 km
Nearby benchmarked buildings
Office · 649,137 sq ft
- Y-North Mary Buildingsscore —
Office · 431,648 sq ft
Office · 287,644 sq ft
- 455 N Mary Ave Buildingscore —
Office · 215,824 sq ft
- 445 N Mary Ave Buildingscore —
Office · 215,824 sq ft
- Briarwood - 29160score 100
Multifamily Housing · 198,646 sq ft
See also: most efficient in California · biggest emitters
How does Summerhill Park - Essex (Sm189) 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. Summerhill Park - Essex (Sm189)'s ENERGY STAR score of 98 compares with an average of 82 across the 9,612 that report a score; it scores higher than 66% of them and lower than 29%. Its site EUI of 27.5 kBtu/ft² is about 20% 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 1.6 kgCO₂e/ft² is about 25% below the group average of 2.1 kgCO₂e/ft².
At 86,110 sq ft, it is about 43% below the average floor area of 150,919 sq ft for those buildings. Its 1988 construction date is close to 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 Summerhill Park - Essex (Sm189)'s energy performance changed over time?
BuildingCensus holds 3 California disclosures for Summerhill Park - Essex (Sm189), covering report years 2022–2024. Its ENERGY STAR score went from 95 in 2022 to 98 in 2024 (+3 points). Site EUI moved from 27.9 kBtu/ft² (2022) to 27.5 kBtu/ft² (2024), a 1% decrease. Reported emissions went from 156 tCO₂e to 135 tCO₂e over the same span (down 13%).
What does an ENERGY STAR score of 98 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 98 means the building performs better than about 98% of its national peers. BuildingCensus bands the score into report-card grades; 98 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. Summerhill Park - Essex (Sm189)'s 27.5 kBtu/ft² across 86,110 sq ft works out to about 2.4 billion Btu (694 MWh-equivalent) in 2024. The disclosure also reports 331,924 kWh of electricity and 11,332 therms of natural gas for the year.
Which law requires Summerhill Park - Essex (Sm189) to report its energy use?
Summerhill Park - Essex (Sm189) 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:23359008:2024). 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
- Brookdale (Bk39)· 86,099 sq ft · score 85 (A)
- El Jardin· 86,078 sq ft · score 79 (B)
- 340 S Downs St· 86,078 sq ft · score 92 (A)
- Presidio Village Senior Housing, Inc.· 86,072 sq ft · EUI 31.2 kBtu/ft²
- Villa Mondavi· 86,058 sq ft · score 96 (A)
- Casa Figueroa· 86,055 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 Summerhill Park - Essex (Sm189)'s energy grade?
Summerhill Park - Essex (Sm189) scores 98 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 Summerhill Park - Essex (Sm189) use?
Its 2024 site energy-use intensity was 27.5 kBtu/ft² across 86,110 sq ft, including 331,924 kWh of electricity and 11,332 therms of natural gas.
What are Summerhill Park - Essex (Sm189)'s carbon emissions?
Summerhill Park - Essex (Sm189) reported 135 tCO₂e of greenhouse-gas emissions (1.6 kgCO₂e/ft²) for 2024.
Where is Summerhill Park - Essex (Sm189)?
Summerhill Park - Essex (Sm189) is at 972 Corte Madera Avenue, Sunnyvale, in Sunnyvale, California 94085. Its coordinates are 37.39053, -122.04337 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Summerhill Park - Essex (Sm189) and when was it built?
Summerhill Park - Essex (Sm189) has 86,110 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1988 as its year built. It is classed as multifamily housing.
Is Summerhill Park - Essex (Sm189) 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).
Working with California building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Summerhill Park - Essex (Sm189), Sunnyvale, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/summerhill-park-essex-sm189-3467f202 (data as of July 9, 2026).