Westlake 45 - Gerson
Multifamily Housing in California, CA · 45 Poncetta Dr., Daly City · 94015
At a glance
Westlake 45 - Gerson is a 101,000-square-foot multifamily housing building at 45 Poncetta Dr., Daly City in Daly City, California, built in 1966. In its 2020 California benchmarking disclosure it reported an ENERGY STAR score of 94 out of 100 (grade A), a site energy-use intensity of 33.0 kBtu/ft² and 186 tCO₂e of greenhouse-gas emissions. That score is higher than 55% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2020
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 94 (band A) |
| Site EUI | 33.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 186 tCO₂e |
| GHG intensity | 1.8 kgCO₂e/ft² |
| Electricity | 257,990 kWh |
| Natural gas | 23,945 therms |
| Gross floor area | 101,000 sq ft |
| Source record | california:6879852:2020 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2020latest | 94 | -1 | 33.0 kBtu/ft² | 186 tCO₂e |
| 2019 | 95 | 31.8 kBtu/ft² | 181 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
- 45 Poncetta Dr., Daly City
- City
- California
- State
- California
- ZIP
- 94015
- Coordinates
- 37.70262, -122.47285
Within ~1 km
Nearby benchmarked buildings
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- Westlake Village Apartmentsscore 100
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- Poncetta (Po093)score 95
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- Phase3 - 2001 Junipero Serrascore —
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- Westlake Garden West (Ga043)score 88
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See also: most efficient in California · biggest emitters
How does Westlake 45 - Gerson 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. Westlake 45 - Gerson's ENERGY STAR score of 94 compares with an average of 82 across the 9,612 that report a score; it scores higher than 55% of them and lower than 42%. Its site EUI of 33.0 kBtu/ft² is roughly in line with 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 1.8 kgCO₂e/ft² is about 14% below the group average of 2.1 kgCO₂e/ft².
At 101,000 sq ft, it is about 33% below the average floor area of 150,919 sq ft for those buildings. It was built in 1966, 22 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 Westlake 45 - Gerson's energy performance changed over time?
BuildingCensus holds 2 California disclosures for Westlake 45 - Gerson, covering report years 2019–2020. Its ENERGY STAR score went from 95 in 2019 to 94 in 2020 (-1 points); its best year on file was 2019, at 95. Site EUI moved from 31.8 kBtu/ft² (2019) to 33.0 kBtu/ft² (2020), an 4% increase. Reported emissions went from 181 tCO₂e to 186 tCO₂e over the same span (up 2%).
What does an ENERGY STAR score of 94 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 94 means the building performs better than about 94% of its national peers. BuildingCensus bands the score into report-card grades; 94 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. Westlake 45 - Gerson's 33.0 kBtu/ft² across 101,000 sq ft works out to about 3.3 billion Btu (977 MWh-equivalent) in 2020. The disclosure also reports 257,990 kWh of electricity and 23,945 therms of natural gas for the year.
Which law requires Westlake 45 - Gerson to report its energy use?
Westlake 45 - Gerson 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 2020 disclosure (source record california:6879852:2020). 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
- 10402 Bonaventure· 100,930 sq ft · score 53 (D)
- The Bonaventure· 100,930 sq ft · score 58 (C)
- Garden Court· 100,905 sq ft · score 82 (B)
- 660 West Bonita Avenue - Ab802· 100,900 sq ft · score 78 (B)
- Brookside Apartments (Bp41)· 100,896 sq ft · score 91 (A)
- Hacienda Senior Village· 100,885 sq ft · score 80 (B)
- 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 Westlake 45 - Gerson's energy grade?
Westlake 45 - Gerson scores 94 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2020 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Westlake 45 - Gerson use?
Its 2020 site energy-use intensity was 33.0 kBtu/ft² across 101,000 sq ft, including 257,990 kWh of electricity and 23,945 therms of natural gas.
What are Westlake 45 - Gerson's carbon emissions?
Westlake 45 - Gerson reported 186 tCO₂e of greenhouse-gas emissions (1.8 kgCO₂e/ft²) for 2020.
Where is Westlake 45 - Gerson?
Westlake 45 - Gerson is at 45 Poncetta Dr., Daly City, in Daly City, California 94015. Its coordinates are 37.70262, -122.47285 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Westlake 45 - Gerson and when was it built?
Westlake 45 - Gerson has 101,000 sq ft of gross floor area, as reported in its 2020 disclosure. The disclosure lists 1966 as its year built. It is classed as multifamily housing.
Is Westlake 45 - Gerson covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2020 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, “Westlake 45 - Gerson, Daly City, California — 2020 benchmarking disclosure”, https://buildingcensus.com/buildings/california/westlake-45-gerson-f7b5d0f5 (data as of July 9, 2026).