The 505 Apartments (Gr422)
Multifamily Housing in California, CA · 505 W 31St St, Los Angeles · 90007
At a glance
The 505 Apartments (Gr422) is a 59,584-square-foot multifamily housing building at 505 W 31St St, Los Angeles in Los Angeles, California, built in 2021. 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 30.4 kBtu/ft² and 110 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 | 30.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 110 tCO₂e |
| GHG intensity | 1.8 kgCO₂e/ft² |
| Electricity | 284,517 kWh |
| Natural gas | 8,567 therms |
| Gross floor area | 59,584 sq ft |
| Source record | california:16733373:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 98 | +2 | 30.4 kBtu/ft² | 110 tCO₂e |
| 2023 | 96 | +12 | 32.3 kBtu/ft² | 121 tCO₂e |
| 2022 | 84 | — | 144 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
- 505 W 31St St, Los Angeles
- City
- California
- State
- California
- ZIP
- 90007
- Coordinates
- 34.02394, -118.27736
Within ~1 km
Nearby benchmarked buildings
- University Park Campus (Upc)score —
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- Lorenzoscore 99
Multifamily Housing · 1,216,045 sq ft
- University Village (Uvi)score —
Residence Hall/Dormitory · 1,207,266 sq ft
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- University Gatewayscore 89
Multifamily Housing · 820,242 sq ft
Residence Hall/Dormitory · 492,541 sq ft
See also: most efficient in California · biggest emitters
How does The 505 Apartments (Gr422) 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. The 505 Apartments (Gr422)'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 30.4 kBtu/ft² is about 12% 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 1.8 kgCO₂e/ft² is about 12% below the group average of 2.1 kgCO₂e/ft².
At 59,584 sq ft, it is about 61% below the average floor area of 150,919 sq ft for those buildings. It was built in 2021, 33 years later 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 The 505 Apartments (Gr422)'s energy performance changed over time?
BuildingCensus holds 3 California disclosures for The 505 Apartments (Gr422), covering report years 2022–2024. Its ENERGY STAR score went from 84 in 2022 to 98 in 2024 (+14 points). Site EUI moved from 32.3 kBtu/ft² (2023) to 30.4 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 144 tCO₂e to 110 tCO₂e over the same span (down 24%).
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. The 505 Apartments (Gr422)'s 30.4 kBtu/ft² across 59,584 sq ft works out to about 1.8 billion Btu (531 MWh-equivalent) in 2024. The disclosure also reports 284,517 kWh of electricity and 8,567 therms of natural gas for the year.
Which law requires The 505 Apartments (Gr422) to report its energy use?
The 505 Apartments (Gr422) 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:16733373:2024). 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
- Bayview· 59,583 sq ft · score 100 (A)
- Citra Apartments Llc· 59,565 sq ft · score 88 (A)
- 1550 S San Antonio Ave, Pomona, Ca 91766· 59,560 sq ft · score 100 (A)
- 200 W Newmark Ave· 59,560 sq ft · score 100 (A)
- Bakersfield_01 - 900 4Th St, Bakersfield, Ca 93304· 59,559 sq ft · score 98 (A)
- 10050 Juniper Ave· 59,558 sq ft · score 1 (D)
- 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 The 505 Apartments (Gr422)'s energy grade?
The 505 Apartments (Gr422) 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 The 505 Apartments (Gr422) use?
Its 2024 site energy-use intensity was 30.4 kBtu/ft² across 59,584 sq ft, including 284,517 kWh of electricity and 8,567 therms of natural gas.
What are The 505 Apartments (Gr422)'s carbon emissions?
The 505 Apartments (Gr422) reported 110 tCO₂e of greenhouse-gas emissions (1.8 kgCO₂e/ft²) for 2024.
Where is The 505 Apartments (Gr422)?
The 505 Apartments (Gr422) is at 505 W 31St St, Los Angeles, in Los Angeles, California 90007. Its coordinates are 34.02394, -118.27736 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is The 505 Apartments (Gr422) and when was it built?
The 505 Apartments (Gr422) has 59,584 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2021 as its year built. It is classed as multifamily housing.
Is The 505 Apartments (Gr422) 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, “The 505 Apartments (Gr422), Los Angeles, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/the-505-apartments-gr422-1eb06043 (data as of July 9, 2026).