5539 RIVERTON AVE
Office in Los Angeles, CA · 91601
At a glance
5539 RIVERTON AVE is a 45,000-square-foot office building in Los Angeles, California, built in 1961. In its 2025 Los Angeles benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 1.4 kBtu/ft² and 3 tCO₂e of greenhouse-gas emissions. That score is higher than 90% of the 591 scored office buildings in Los Angeles.
LA Municipal Code Div. 97, §91.9701 (EBEWE) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 1.4 kBtu/ft² |
| Source EUI | 2.9 kBtu/ft² |
| GHG emissions | 3 tCO₂e |
| GHG intensity | — |
| Water use | 129 kgal |
| Gross floor area | 45,000 sq ft |
| Source record | la:450696884785:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 100 | ±0 | 1.4 kBtu/ft² | 3 tCO₂e |
| 2023 | 100 | ±0 | 1.9 kBtu/ft² | 5 tCO₂e |
| 2022 | 100 | ±0 | 1.5 kBtu/ft² | 4 tCO₂e |
| 2021 | 100 | ±0 | 1.7 kBtu/ft² | 4 tCO₂e |
| 2020 | 100 | ±0 | 2.4 kBtu/ft² | 6 tCO₂e |
| 2019 | 100 | ±0 | 3.3 kBtu/ft² | 8 tCO₂e |
| 2018 | 100 | ±0 | 1.7 kBtu/ft² | 4 tCO₂e |
| 2017 | 100 | 1.6 kBtu/ft² | 4 tCO₂e |
Compliance context
LA Municipal Code Div. 97, §91.9701 (EBEWE)
EBEWE requires annual benchmarking plus audits/retro-commissioning every five years for privately owned buildings of 20,000 sq ft or more; non-compliance carries a $202 fee (LAMC §91.9712) plus possible late fees.
Ownership
Reel Efx Inc/Riverton Property LLC
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 5539 RIVERTON AVE
- City
- Los Angeles
- State
- California
- ZIP
- 91601
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Los Angeles · biggest emitters
How does 5539 RIVERTON AVE compare with other office buildings in Los Angeles?
The latest disclosures cover 676 office buildings in Los Angeles, out of 11,498 buildings citywide. 5539 RIVERTON AVE's ENERGY STAR score of 100 compares with an average of 77 across the 591 that report a score; it scores higher than 90% of them. Its site EUI of 1.4 kBtu/ft² is about 97% below the average of 44.3 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 45,000 sq ft, it is about 69% below the average floor area of 147,328 sq ft for those buildings. It was built in 1961, 14 years earlier than the group's average year built (1975). 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 5539 RIVERTON AVE's energy performance changed over time?
BuildingCensus holds 8 Los Angeles disclosures for 5539 RIVERTON AVE, covering report years 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2025. Its ENERGY STAR score was 100 in both 2017 and 2025. Site EUI moved from 1.6 kBtu/ft² (2017) to 1.4 kBtu/ft² (2025), a 13% decrease. Reported emissions went from 4 tCO₂e to 3 tCO₂e over the same span (down 13%).
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 Los Angeles, 63% 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. 5539 RIVERTON AVE's 1.4 kBtu/ft² across 45,000 sq ft works out to about 0.1 billion Btu (18 MWh-equivalent) in 2025. Its source EUI of 2.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 129 thousand gallons of water for the year.
Which law requires 5539 RIVERTON AVE to report its energy use?
5539 RIVERTON AVE reports under LA Municipal Code Div. 97, §91.9701 (EBEWE), the legal basis of Los Angeles's Existing Buildings Energy & Water Efficiency (EBEWE) program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record la:450696884785:2025). EBEWE requires annual benchmarking plus audits/retro-commissioning every five years for privately owned buildings of 20,000 sq ft or more; non-compliance carries a $202 fee (LAMC §91.9712) plus possible late fees.
More office buildings in Los Angeles
- 23241 VENTURA BLVD· 44,999 sq ft · EUI 27.4 kBtu/ft²
- 1461 E 4TH ST· 44,550 sq ft · score 99 (A)
- 13701 RIVERSIDE DR· 44,052 sq ft · score 87 (A)
- 900 N CAHUENGA BLVD· 44,000 sq ft · score 96 (A)
- 5657 WILSHIRE BLVD· 44,000 sq ft · score 56 (C)
- 6767 FOREST LAWN DR· 43,981 sq ft · score 82 (B)
- Office buildings in Los Angeles· 676 benchmarked
- All Los Angeles benchmarked buildings· LA Municipal Code Div. 97, §91.9701 (EBEWE)
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- Least efficient large buildings in Los Angeles
- Biggest emitters in Los Angeles
Frequently asked questions
What is 5539 RIVERTON AVE's energy grade?
5539 RIVERTON AVE scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2025 Los Angeles disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 5539 RIVERTON AVE use?
Its 2025 site energy-use intensity was 1.4 kBtu/ft² (2.9 kBtu/ft² source) across 45,000 sq ft.
What are 5539 RIVERTON AVE's carbon emissions?
5539 RIVERTON AVE reported 3 tCO₂e of greenhouse-gas emissions for 2025.
Where is 5539 RIVERTON AVE?
5539 RIVERTON AVE is in Los Angeles, California 91601.
How big is 5539 RIVERTON AVE and when was it built?
5539 RIVERTON AVE has 45,000 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1961 as its year built. It is classed as office.
Is 5539 RIVERTON AVE covered by LA Municipal Code Div. 97, §91.9701 (EBEWE)?
Yes — it appears in the 2025 Existing Buildings Energy & Water Efficiency (EBEWE) disclosure, which lists the buildings reporting under LA Municipal Code Div. 97, §91.9701 (EBEWE).
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About this data
Source: Existing Buildings Energy & Water Efficiency (EBEWE) (LA Municipal Code Div. 97, §91.9701 (EBEWE)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “5539 RIVERTON AVE, Los Angeles, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/los-angeles/5539-riverton-ave-f55d2e7d (data as of October 2, 2026).