Westlake 355 Park - Gerson
Multifamily Housing in California, CA · 355 Park Plaza Dr, Daly City · 94015
At a glance
Westlake 355 Park - Gerson is a 61,000-square-foot multifamily housing building at 355 Park Plaza Dr, Daly City in Daly City, California, built in 1962. In its 2020 California benchmarking disclosure it reported an ENERGY STAR score of 98 out of 100 (grade A), a site energy-use intensity of 32.9 kBtu/ft² and 112 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 2020
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 98 (band A) |
| Site EUI | 32.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 112 tCO₂e |
| GHG intensity | 1.8 kgCO₂e/ft² |
| Electricity | 149,097 kWh |
| Natural gas | 14,675 therms |
| Gross floor area | 61,000 sq ft |
| Source record | california:6879841:2020 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2020latest | 98 | -2 | 32.9 kBtu/ft² | 112 tCO₂e |
| 2019 | 100 | 29.5 kBtu/ft² | 100 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
- 355 Park Plaza Dr, Daly City
- City
- California
- State
- California
- ZIP
- 94015
- Coordinates
- 37.69642, -122.48019
Within ~1 km
Nearby benchmarked buildings
- 331 Park Plaza Propertiesscore 69
Multifamily Housing · 2,596,800 sq ft
- Westlake Village Apartmentsscore 100
Multifamily Housing · 1,361,000 sq ft
Multifamily Housing · 706,688 sq ft
- Poncetta (Po093)score 95
Multifamily Housing · 620,173 sq ft
- Westlake Garden West (Ga043)score 88
Multifamily Housing · 400,712 sq ft
- Westlake Garden East (Ga042)score 95
Multifamily Housing · 260,230 sq ft
See also: most efficient in California · biggest emitters
How does Westlake 355 Park - 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 355 Park - Gerson'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 32.9 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 61,000 sq ft, it is about 60% below the average floor area of 150,919 sq ft for those buildings. It was built in 1962, 26 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 355 Park - Gerson's energy performance changed over time?
BuildingCensus holds 2 California disclosures for Westlake 355 Park - Gerson, covering report years 2019–2020. Its ENERGY STAR score went from 100 in 2019 to 98 in 2020 (-2 points); its best year on file was 2019, at 100. Site EUI moved from 29.5 kBtu/ft² (2019) to 32.9 kBtu/ft² (2020), an 12% increase. Reported emissions went from 100 tCO₂e to 112 tCO₂e over the same span (up 12%).
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. Westlake 355 Park - Gerson's 32.9 kBtu/ft² across 61,000 sq ft works out to about 2 billion Btu (588 MWh-equivalent) in 2020. The disclosure also reports 149,097 kWh of electricity and 14,675 therms of natural gas for the year.
Which law requires Westlake 355 Park - Gerson to report its energy use?
Westlake 355 Park - 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:6879841:2020). 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.
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- Multifamily Housing buildings in California· 10,630 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
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Frequently asked questions
What is Westlake 355 Park - Gerson's energy grade?
Westlake 355 Park - Gerson scores 98 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 355 Park - Gerson use?
Its 2020 site energy-use intensity was 32.9 kBtu/ft² across 61,000 sq ft, including 149,097 kWh of electricity and 14,675 therms of natural gas.
What are Westlake 355 Park - Gerson's carbon emissions?
Westlake 355 Park - Gerson reported 112 tCO₂e of greenhouse-gas emissions (1.8 kgCO₂e/ft²) for 2020.
Where is Westlake 355 Park - Gerson?
Westlake 355 Park - Gerson is at 355 Park Plaza Dr, Daly City, in Daly City, California 94015. Its coordinates are 37.69642, -122.48019 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Westlake 355 Park - Gerson and when was it built?
Westlake 355 Park - Gerson has 61,000 sq ft of gross floor area, as reported in its 2020 disclosure. The disclosure lists 1962 as its year built. It is classed as multifamily housing.
Is Westlake 355 Park - 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 355 Park - Gerson, Daly City, California — 2020 benchmarking disclosure”, https://buildingcensus.com/buildings/california/westlake-355-park-gerson-62768f87 (data as of July 9, 2026).