400 W.
Office in California, CA · 400 West 157Th Street, Gardena · 90248
At a glance
400 W. is a 59,045-square-foot office building at 400 West 157Th Street, Gardena in Gardena, California, built in 1998. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 2.3 kBtu/ft² and 9 tCO₂e of greenhouse-gas emissions. That score is higher than 91% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 2.3 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 9 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 39,093 kWh |
| Gross floor area | 59,045 sq ft |
| Source record | california:26718172:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 2.3 kBtu/ft² | 9 tCO₂e |
| 2023 | 100 | ±0 | 2.1 kBtu/ft² | 9 tCO₂e |
| 2022 | 100 | 2.3 kBtu/ft² | 9 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
- 400 West 157Th Street, Gardena
- City
- California
- State
- California
- ZIP
- 90248
- Coordinates
- 33.88857, -118.28107
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 400 W. compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 400 W.'s ENERGY STAR score of 100 compares with an average of 75 across the 4,912 that report a score; it scores higher than 91% of them. Its site EUI of 2.3 kBtu/ft² is about 96% below the average of 56.4 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 96% below the group average of 3.6 kgCO₂e/ft².
At 59,045 sq ft, it is about 61% below the average floor area of 151,937 sq ft for those buildings. It was built in 1998, 13 years later than the group's average year built (1985). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 400 W.'s energy performance changed over time?
BuildingCensus holds 3 California disclosures for 400 W., covering report years 2022–2024. Its ENERGY STAR score was 100 in both 2022 and 2024. Site EUI moved from 2.3 kBtu/ft² (2022) to 2.3 kBtu/ft² (2024), an 0% increase. Reported emissions went from 9 tCO₂e to 9 tCO₂e over the same span (down 6%).
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. 400 W.'s 2.3 kBtu/ft² across 59,045 sq ft works out to about 0.1 billion Btu (40 MWh-equivalent) in 2024. The disclosure also reports 39,093 kWh of electricity for the year.
Which law requires 400 W. to report its energy use?
400 W. 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:26718172:2024). 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 office buildings in California
- Schurman Family Company Tic - 954 60Th St, Emeryville, Ca 94608· 59,040 sq ft · score 99 (A)
- Z431617 - Sunnyvale Bldg. K-840· 59,000 sq ft · score 98 (A)
- 1879 Lundy Ave· 59,000 sq ft · score 48 (D)
- 00629-Ssd Central & Vre· 59,000 sq ft
- 900 N Broadway· 58,968 sq ft · score 70 (B)
- 1088 Sansome· 58,923 sq ft · score 81 (B)
- Office buildings in California· 6,214 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 400 W.'s energy grade?
400 W. scores 100 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 400 W. use?
Its 2024 site energy-use intensity was 2.3 kBtu/ft² across 59,045 sq ft, including 39,093 kWh of electricity.
What are 400 W.'s carbon emissions?
400 W. reported 9 tCO₂e of greenhouse-gas emissions (0.1 kgCO₂e/ft²) for 2024.
Where is 400 W.?
400 W. is at 400 West 157Th Street, Gardena, in Gardena, California 90248. Its coordinates are 33.88857, -118.28107 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 400 W. and when was it built?
400 W. has 59,045 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1998 as its year built. It is classed as office.
Is 400 W. 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, “400 W., Gardena, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/400-w-c41331bc (data as of July 9, 2026).